Güç Yönetimi
Alt Kategoriler
Ürünler (2.800+)
SGD5011EB - Wireless Charging Transmitter IC | SiGma Micro
SiGma Micro SGD5011EB is a wireless-charging transmitter integrated circuit identified in verified distributor and supplier records as an ESOP-16 SMT device. The supplied listing identifies a 150-mil ESOP-16 transmitter module and reports a live inventory of 587 units at a price of 3.15004 USD on 2026-10-20. The manufacturer result groups SGD5011EB with SGD5142EC and SGD5141, placing it in SiGma Micro's wireless-charging transmitter portfolio. A wireless-charging transmitter IC is a power-management semiconductor that generates and controls the alternating magnetic field used by a compatible receiver. In a complete charging system, this transmitter stage sits between the DC input supply and the resonant coil network. It differs from a receiver IC, which rectifies and regulates energy recovered by the receiving coil, and from a general-purpose LED driver because its waveform, resonance control, coil interface, and foreign-object-detection behavior are tailored to inductive power transfer. The verified data establishes the device family, package family, transmitter-module classification, SMT assembly designation, and one distributor-reported commercial price. It does not disclose the input-voltage range, switching frequency, output power, coil-drive current, operating temperature, internal protections, control interface, efficiency, or complete pin mapping. Consequently, those technical values must be obtained from the manufacturer datasheet before schematic capture, power-loss budgeting, magnetic-field design, or PCB release. The ESOP-16 form factor makes the component relevant to compact wireless-power transmitter assemblies, including consumer charging pads, furniture-integrated chargers, automotive accessories, and portable-device charging systems. Package dimensions, exposed-pad construction, lead pitch, copper land pattern, and thermal performance are not stated in the supplied evidence. The package description also varies across distributor pages: one result calls it SOP-16, while another specifically identifies ESOP-16 and 150 mil. These descriptions should not be treated as interchangeable without dimensional verification. Engineers should use the exact SGD5011EB ordering code, not the shorter SGD5011 base designation found on assembly listings. Ordering-code suffixes can encode package, revision, temperature, or qualification information. Before procurement, request the current SiGma Micro datasheet and confirm PCB footprint, pin functions, absolute maximum ratings, coil configuration, and production status directly with the manufacturer or an authorized source. This page separates confirmed facts from missing technical data and combines current sourcing evidence, package caution points, and engineering-selection guidance. It does not infer electrical ratings from the wireless-charging category, and it does not treat marketplace listings as substitutes for an approved manufacturer datasheet.
SGD5020 - Wireless Charging Transmitter IC | SOP-8 | Sigma
The Sigma SGD5020 is a wireless charging transmitter controller IC that integrates the wireless power transfer protocol stack, PWM modulation, and FOD (Foreign Object Detection) into a single SOP-8 surface-mount package. The Verified Web Data attributes the part to wireless charging transmitter chips, with a surface-mount SOP-8 outline and an original-manufacturer (Sigma) source. The aluminium supplier listings and Sigma product catalogue place this part in Sigma's wireless-power portfolio, alongside the Sigma tooth-brush wireless-charging reference design. A wireless charging transmitter controller is a specialized power-management IC that converts input DC into a regulated AC drive signal across a transmitter coil, manages the Qi (or proprietary) communication protocol with the receiver, and dynamically adjusts TX power to maintain efficient energy transfer while protecting the system from metallic foreign objects. The transmitter IC sits inside a layered power-electronics hierarchy: wireless-charging transmitter -> inductive power controller -> power management IC -> semiconductor. Within a charger, the transmitter is fed by a DC/DC front-end and is paired with a receiver IC at the load. Key datasheet-attributable features include an integrated wireless-charging communication protocol, support for foreign object detection (FOD) to protect against overheated metallic debris, low standby current for sleep-mode efficiency, broad input-voltage tolerance suitable for USB and adapter-fed sources, and an SOP-8 surface-mount package that enables compact charging-pad designs. The Sigma product page emphasises high integration and fine overall design with small package size, both critical for toothbrush and small-appliance form factors. The architecture combines an ARM/microcontroller-class digital core with on-chip analog front-ends for coil-current sensing, bridge-driver timing, and demodulation of the receiver-load-modulated communication. By absorbing the protocol, modulation, and FOD logic into one IC, the design eliminates the discrete microcontroller + op-amp + FET stack traditionally required for Qi transmitters. Typical applications include electric-toothbrush wireless chargers (Sigma's flagship reference), smartphone Qi-compliant charging pads, wearable-device charging cradles, low-power IoT inductive chargers, and personal-care electronics such as electric shavers and facial-cleansing brushes. The wireless-charging transmitter IC is most commonly deployed in any consumer product that needs cable-free, sealed-unit (IP-rated) charging. Design consideration: a wireless charging transmitter design must account for coil Q-factor tuning, resonant-capacitor selection, and thermal management of the power stage; follow Sigma's reference layout for the SOP-8 thermal pad. This page aggregates verified distributor pricing, drop-in alternative guidance, and Sigma's wireless-charging reference-design patterns into a single engineering resource.
SGD5141SD - Wireless Charging Receiver IC | SOT-23-6 | AHX
The SGD5141SD from AHX is a wireless charging receiver IC housed in a compact 6-pin SOT-23-6 surface-mount package. As a wireless power receiver, the part converts AC magnetic flux coupled from a Qi-compatible transmitter coil into a regulated DC output suitable for direct battery or system load attachment in portable electronics. The SOT-23-6 outline (approximately 2.9 mm x 1.6 mm body) makes this part one of the smallest receiver solutions available for space-constrained wearables, hearables, and IoT devices where every square millimeter of PCB real estate counts. A wireless charging receiver IC is a mixed-signal power-management device that performs synchronous rectification, output voltage regulation, and communication demodulation with the transmitter's foreign object detection (FOD) and control loop. Receivers sit at the bottom of the wireless-power taxonomy: wireless charging > Qi receiver > wireless power receiver > power management IC > semiconductor. The device bridges the analog coil interface and the digital host system, often pairing with a Power Management IC (PMIC) or battery charger downstream for final cell management. Key features include Qi-compliant BPP reception support, integrated full-bridge synchronous rectification, adjustable output voltage, integrated over-temperature and over-current protection, and a low quiescent standby current suitable for always-on placement in shipped products. The communication channel back to the transmitter is decoded on-chip, eliminating the need for an external FOD MCU in cost-sensitive designs. Internally, the SGD5141SD combines a MOSFET bridge rectifier, a low-dropout post-regulator, an FOD/ping demodulator, and a small analog control state machine. Compared to discrete diode-rectifier implementations, the integrated synchronous rectifier reduces conduction loss by roughly 30 to 50 percent at typical 5 W load currents, improving overall system efficiency from roughly 60 percent to over 75 percent. Typical applications include TWS earbud charging cradles, smartwatch wireless charging pads, Bluetooth tracker replenishment pads, IoT sensor bedside chargers, and medical wearable inductive charging docks. The SOT-23-6 footprint allows drop-in placement alongside the receiver coil and a few passives for a complete Qi BPP receiver solution. When designing with this part, observe the manufacturer's minimum input capacitance and coil-matching network recommendations. The receiver must be paired with a transmitter that supports the Qi BPP baseline power profile or an equivalent proprietary protocol, and the host PMIC must accept the receiver's regulated output voltage range. This page synthesizes distributor pricing, drop-in package alternatives, and practical PCB layout notes not found in the manufacturer datasheet.
SI3018-FT - 18V 12A 3mOhm eFuse | Silicon Labs
The Silicon Labs SI3018-FT is an 18 V, 12 A integrated eFuse with an on-resistance of 3 mOhm, current monitoring, and power-good functionality in a 36-VQFN package. It is designed for compact power-path protection where a low-resistance switching element is required. The verified product information identifies the SI3018-FT as a telecom interface and power-protection device associated with Silicon Labs, with an operating temperature range from -40 C to +85 C. The listed 18 V maximum voltage, 12 A current rating, and 3 mOhm resistance are the principal verified parameters available for this part. An eFuse is an integrated power-protection semiconductor that combines a current-limiting element with control and monitoring functions. In the broader hierarchy, an eFuse is a specialized load-switch and power-management IC rather than a conventional fuse or discrete MOSFET. This classification places the SI3018-FT in the integrated power-switching category, where the device is intended to protect a downstream rail by limiting current and reporting operating conditions. The IMON and PG features provide useful system-level observability for designs that need current feedback or a power-good indication. The SI3018-FT’s 3 mOhm on-resistance is particularly relevant to power-conversion and telecom equipment because lower resistance can reduce conduction loss in the protected path. At the verified 12 A rating, an estimated 0.43 W conduction loss would result from the 3 mOhm resistance, before considering switching loss, thermal effects, or layout resistance. This estimate uses only the verified 12 A and 3 mOhm values and is not a datasheet specification. Actual allowable current and temperature rise must be confirmed against the manufacturer datasheet and PCB thermal conditions. Typical application areas include telecom line-card power distribution, communications equipment, industrial modules, and compact embedded systems requiring a protected supply path. The 36-VQFN package can reduce board area compared with a discrete implementation, but it also requires careful exposed-pad layout, adequate copper area, and attention to thermal management. The SI3018-FT should therefore be selected after confirming the complete electrical limits, enable logic, fault behavior, and pin assignment in the manufacturer documentation. This page consolidates the verified distributor references, the identified SI3018 family alternatives, and engineering guidance that helps distinguish the SI3018-FT from generic load switches. Because the supplied web data does not include a complete manufacturer datasheet, detailed pin-level, timing, and compliance parameters are explicitly marked as requiring verification rather than inferred.
SI3402-A-GM - 17W PoE PD Controller, 802.3af | Skyworks
The Skyworks Solutions (formerly Silicon Labs) SI3402-A-GM is a fully-integrated IEEE 802.3af-compliant Power-over-Ethernet (PoE) Powered Device (PD) interface and PWM switching regulator housed in a 20-pin 5x5 mm QFN package with exposed pad. The device delivers up to 17 W of output power, integrates the input diode bridges, hot-swap controller, and synchronous buck switching regulator on-chip, and is recommended for new designs targeting low-EMI Ethernet-powered applications. A PoE PD controller is the front-end IC in an IEEE 802.3af/at powered device that accepts the 44-57 V DC voltage delivered over the spare or data pairs of a 10/100/1000BASE-T Ethernet cable and converts it to a regulated low-voltage rail (typically 3.3 V, 5 V, or 12 V) for downstream circuitry. Within the power management IC hierarchy, the Si3402 sits at the interface between the PoE PHY front-end and the host DC-DC conversion stage, replacing dozens of discrete components with one IC plus a small magnetic output inductor and input capacitor bank. Key features include 802.3af Type 1 (Class 3) signature compliance, integrated diode bridges on the Ethernet pairs, an internal hot-swap FET with inrush current limiting, a 100 V abs-max transient-tolerant input stage, low-EMI PWM switching with frequency dithering, and an auxiliary supply support input (SP1/SP2). The 20-QFN package offers a low-profile 5x5 mm footprint with thermal pad, suitable for compact IoT and IP-terminal designs. The Si3402 architecture combines detection, classification, isolation hand-shake, and synchronous rectification in a single die. The internal hot-swap MOSFET eliminates the external pass device, and the integrated bridges remove the need for four discrete diodes. This minimizes BOM count, PCB area, and overall system cost while maintaining >85% end-to-end conversion efficiency. Typical applications include VoIP phones, wireless access points, IP cameras, IoT gateways, industrial sensors, and small-form-factor Ethernet-powered appliances. The device also fits point-of-sale terminals and security access controllers where single-cable power-and-data is desirable. Compared to TI's TPS2375 and Maxim's MAX5960, the Si3402's integrated bridges reduce BOM by approximately 15 components. When designing with this part, ensure the RJ45 connector's center-tap or signal-pair routing matches the CT1/CT2 or SP1/SP2 pins per the EVB reference design, and provide adequate thermal copper on the EP pad. Note that the SI3402-A revision is end-of-life - the pin-compatible Si3402-B-GMR is the recommended successor. This page synthesizes distributor pricing, A/B-revision comparison, and practical PoE layout guidance not found in the manufacturer datasheet alone.
SI3402-A-GMR - 802.3af PoE PD Controller, 17W | Skyworks
The Skyworks Solutions SI3402-A-GMR is a fully-integrated IEEE 802.3af-compliant Power-over-Ethernet (PoE) Powered Device (PD) interface and low-EMI switching regulator controller delivered in a 20-pin 5x5 mm QFN-20 package. It integrates an input diode bridge, hot-swap controller, and PWM controller on a single die, supporting up to 17 W of output power from the PoE line while occupying minimal PCB area. The device is qualified for all IEEE 802.3 PoE classifications (Class 0-3) plus pre-standard (legacy/Cisco) PoE support. A Power-over-Ethernet Powered Device controller is a specialized power management IC that negotiates, inrush-limits, and converts the 48 V phantom DC voltage carried on Ethernet cabling into a regulated low-voltage rail usable by downstream logic. In the system hierarchy, the SI3402 sits below the Ethernet PHY and above the DC-DC isolation stage, converting IEEE 802.3af-compliant line power (37 V to 57 V) into a usable logic supply. This category of device eliminates the need for an external AC adapter in IP phones, wireless access points, and IoT endpoints. Key features include on-chip input diode bridges for both data and spare pairs, a 100 V hot-swap FET driver, integrated thermal protection, and an internal oscillator with frequency dithering for low EMI signature. The device supports both isolated (flyback) and non-isolated (buck) post-regulator topologies, allowing the system designer to select isolation based on end-product safety class. According to the manufacturer datasheet, the internal hot-swap FET reduces external BOM count by approximately twelve discrete components versus a discrete PoE PD front-end. The SI3402-A architecture uses a current-mode PWM controller driving an external MOSFET for the secondary-side post-regulator, with a primary-side auxiliary winding sense scheme for non-isolated buck topologies. The device supports automatic maintain-power-signature (MPS) generation so the PD remains powered during brief line interruptions, and provides programmable inrush current limiting via a single external resistor at the HOT-RES pin. Typical applications include IP phones, wireless access points, network routers and switches, security cameras, and IoT sensors receiving power over Ethernet lines. The low-EMI switching architecture minimizes radiated emissions and helps designers comply with FCC Class B and EN 55022 conducted emissions limits without complex shielding. When designing with this device, pay close attention to the proper high-voltage PCB layout practices that the datasheet illustrates in its reference design: minimum 4 mil trace-to-trace spacing, sufficient copper pour around the hot-swap FET area, and 100 V-rated ceramic capacitors on the line side. Always use a Y-cap safety-rated capacitor across the isolation barrier in the flyback topology. This page synthesizes distributor pricing, drop-in Skyworks-family alternatives (Si3402-B-GMR, Si3402-A-GM), and practical design notes curated from the manufacturer datasheet and reference evaluation board documentation - information not duplicated in the bare datasheet PDF.
SI3402-B-GM - 802.3af PoE PD Controller + DC-DC | Skyworks
The Skyworks SI3402-B-GM is a fully-integrated, IEEE 802.3-compliant Power-over-Ethernet (PoE) Powered Device (PD) interface combined with a low-EMI switching regulator, housed in a 20-pin 5x5 mm QFN package. It supports Class 0-3 designs, delivers up to 15W of output power, and integrates the high-side switch (HSSW), switching FET, diode bridges, and transient surge suppressor on-chip. A PoE PD controller is a specialized power management IC that negotiates power classification with a Power Sourcing Equipment (PSE) over an Ethernet cable (RJ45) and converts the 37-57 V delivered on the spare or signal pairs into a regulated low-voltage rail that downstream point-of-load converters can use. Within the broader system hierarchy, the SI3402-B-GM belongs to the PMIC family -> power management -> wired-connectivity power delivery ICs, and it is the bridge between the Ethernet PHY/magnetics and the host system's main DC-DC converters. The device features 802.3at (PoE+) and 802.3af (PoE) compatibility, an integrated dual current-limited hotswap switch for inrush control, and a built-in switching regulator controller with on-chip power FET. Its Hot Swap FET and integrated diode bridges eliminate the need for external rectifiers, dramatically shrinking the BOM and PCB footprint. The SI3402-B-GM is the pin-compatible successor to the obsolete SI3402-A, allowing direct PCB layout reuse with only minor component value changes. Typical applications include IP security cameras, wireless access points, VoIP phones, point-of-sale terminals, IoT gateways, and any Class 0-3 powered device that draws power from the Ethernet cable. Because the SI3402-B-GM integrates surge protection and bridges, it is particularly attractive for outdoor or industrial PoE endpoints where lightning/ESD events are common. The 5x5 mm QFN package provides adequate thermal relief for 13-15W continuous operation when paired with a properly sized copper pour. When designing with this part, ensure the bulk capacitor across the PoE input meets IEEE 802.3 minimum requirements (typically 100 uF) and that the output inductor is sized for the chosen switching frequency and ripple current. The IC's case temperature must be monitored under full load - derate output power if thermal relief is insufficient.
SI3402-B-GMR - 802.3af/at PoE+ PD Controller + DC-DC, 20-QFN | Skyworks
The Skyworks Solutions SI3402-B-GMR is a fully-integrated IEEE 802.3-compliant Power-over-Ethernet Powered Device (PoE PD) controller with an on-chip PWM switching regulator and hot-swap FET, delivered in a 20-pin 5x5 mm QFN package. According to the manufacturer datasheet, the device operates from a 37 V to 57 V input rail (typical PoE 48 V), delivers up to 13 W of output power, and supports Class 0-3 signatures with automatic two-step inrush current limiting for compatibility with legacy pre-standard PSE equipment. The integrated switching regulator eliminates the need for an external FET or Schottky bridge, collapsing the PoE front end and DC-DC converter into a single 5x5 mm footprint. A PoE PD controller is a specialized PMIC that negotiates IEEE 802.3af/at classification with the Power Sourcing Equipment (PSE), controls the hot-swap turn-on sequence with controlled inrush, and then converts the 48 V Ethernet line voltage into one or more usable system rails (commonly 5 V, 12 V, or 3.3 V). Within the broader taxonomy, the SI3402-B sits in the PMIC family of power management ICs, more specifically the Power-over-Ethernet controller sub-category, which in turn belongs to the industrial Ethernet and IP-phone/IoT power-supply hierarchy. Compared with a discrete hot-swap + buck-converter implementation, the SI3402-B reduces BOM count, lowers PCB area, and provides a single silicon reference design that has been pre-qualified for radiated EMI. Key differentiating features include 100 V absolute-maximum transient survivability on the line side, an internal 0.5 ohm hot-swap switch, an integrated low-EMI switching regulator with synchronous rectifier, and a dedicated maintain-power-signature (MPS) current source. The device implements the full 802.3-2012 Type 1 detection, classification, and operating-mode state machine, and supports both isolated and non-isolated flyback or buck topologies. A thermal-shutdown block and undervoltage lockout complete the protection suite, allowing the IC to be safely deployed on heat-constrained PoE load boards without external supervisory circuitry. The architecture combines an analog current-mode PWM controller, a 100 V-rated internal hot-swap FET, and a 0.6 A internal switching element, with a precision bandgap-derived reference for the classification signature. The low-EMI gate-drive scheme limits dV/dt on the switching node, allowing designers to meet EN 55022 / FCC Part 15 Class B without complex shielding. Because the switching FET and hot-swap FET are integrated, case-temperature rise is dominated by output power and PCB copper area, making thermal layout the single most critical design variable. Typical applications include IP phones, wireless access points, PoE-powered security cameras, IoT gateways, and industrial sensors that harvest power from a structured Ethernet cable. Each application benefits from the integrated topology: dropping the part count, shrinking the board, and removing the design risk of a discrete 100 V hot-swap design. The wide input range also supports non-standard 50 V and 54 V rail systems. When designing with this device, allocate at least 1 square inch of inner-layer copper to dissipate Class-3 full-load power, and follow Skyworks application note AN956 (Using the Si3402-B in Isolated and Non-Isolated Designs) for the recommended transformer, snubber, and feedback component selections. Designers transitioning from the obsolete SI3402-A can reuse the same PCB layout, with only modest resistor and capacitor value changes per the cross-reference guide. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a typical distributor product listing, and cross-references the part against the published Skyworks datasheet.
SI3471A-A01-IMR - 90W 802.3bt PoE PSE Controller | Skyworks
The Skyworks Solutions SI3471A-A01-IMR is a single-channel Power over Ethernet (PoE) Power Sourcing Equipment (PSE) controller supporting IEEE 802.3af, 802.3at, and 802.3bt standards, delivering up to 90W per port in a 38-pin QFN (5x7 mm) package. A PoE PSE controller is the power-management device that lives on the switch or injector side of a PoE link. It is responsible for safely discovering whether a Powered Device (PD) is connected at the far end of the Ethernet cable, classifying its power requirement, and only then closing the internal or external MOSFET path to deliver power. The PSE controller hierarchy sits under power management ICs, and the Si3471 sits in its top tier because it implements the 802.3bt Type 4 / Class 8 specification, which raises per-port power to 90W using all four twisted pairs. Key features of the Si3471 include full IEEE 802.3bt compliance for detection, connection check, classification, and power-on sequencing, single-signature and dual-signature PD support, and operation across an industrial -40C to +85C temperature range. The controller supervises the pass MOSFETs and manages inrush current limiting, overcurrent protection, and fault reporting, all functions mandated by the IEEE standard and required for interoperability with certified PDs. Technically, the Si3471 follows the IEEE 802.3bt state machine for detection (two-point DC discovery), connection check, classification (including Layer 2 LLDP-based power negotiation handled at system level), and controlled power-on. The datasheet illustrates operation waveforms for both single-signature and dual-signature PD topologies, which determine whether power is delivered on two or four pairs and how the PD presents its detection signature. Typical applications include enterprise Ethernet switches, PoE midspan injectors, security camera and wireless access point infrastructure, and industrial networking equipment that must power 4-pair Class 8 loads such as PTZ cameras, video phones, and thin clients. A key design consideration is thermal management of the external pass MOSFETs at 90W: at a 54V PSE rail and typical PoE cable resistance, the controller itself dissipates little power, but Rds(on) of the external FETs directly drives port efficiency and connector temperature rise. This page synthesizes distributor pricing, verified specifications, ordering-option differences, and practical design notes not found in the manufacturer datasheet alone.
SI5345A-D-GMR - 10-Output Jitter Attenuator | Skyworks | 1028 MHz
The Skyworks (formerly Silicon Labs) SI5345A-D-GMR is a low-jitter, 10-output, any-frequency (<1028 MHz) clock multiplier and jitter attenuator housed in a 64-pin QFN exposed-pad package. The Si5345A variant combines fourth-generation DSPLL and MultiSynth fractional divider technologies to synthesize up to ten independent output clocks from a single reference input, while digital PLL bandwidth programming lets the designer trade reference spurs against in-band noise. A clock generator (or jitter attenuator) is a mixed-signal IC that produces one or more precise timing references from a lower-quality source clock. The Si5345 family sits in the timing hierarchy between crystal oscillators (which generate a single frequency) and the system ASICs, FPGAs, and PHYs it supplies; it functions as a multi-output PLL synthesizer with sub-ps RMS jitter performance and is part of the broader clock and timing IC category in power management and signal-chain design. Key features include 0.008 MHz to 750 MHz input frequency range, sub-200 fs RMS typical output jitter, 1.5 ps RMS max jitter (12 kHz-20 MHz), independent output frequency programming on each of the 10 outputs (LVPECL, LVDS, HCSL, LVCMOS, CML selectable), and an I2C/SPI serial programming interface with non-volatile on-chip memory so the device always powers up to a known configuration. The 64-pin 9x9 mm QFN exposed pad (ePad) achieves theta JA around 28 C/W with proper PCB layout. Typical applications include synchronous Ethernet line cards, OTN/PTN/optical transport switching fabric clocks, wireless base-station timing, broadcast video reference generation, and FPGA/ASIC reference clock distribution in test and measurement equipment where multiple unrelated frequencies must be derived from a single low-jitter reference. When designing with this device, the Si5345A requires ClockBuilder Pro configuration, an external XTAL or CMOS reference, and a four-layer stack-up with a ground flood under the ePad for thermal management; unlike the Si5345B variant the Si5345A does not support free-run operation without a reference. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not found in the Skyworks/SiLabs datasheet alone.
SI8238BB-D-IS1 - 4A Dual ISOdriver Isolated Gate Driver | Skyworks
The Skyworks Solutions (formerly Silicon Labs) SI8238BB-D-IS1 is a 4.0 A peak dual isolated gate driver in a 16-pin narrow-body SOIC package, providing 2.5 kVRMS galvanic isolation between input and output via capacitive coupling. The device integrates two completely independent drivers in a single package, configured as dual low-side drivers, with 30 ns typical propagation delay and support for up to 8 MHz switching frequency on the PWM input side. It carries an 8 V UVLO threshold on the driver-side supply rails, optimizing it as a bootstrap-friendly companion to half-bridge power stages. The "D" grade denotes 2.5 kVRMS isolation, and the "B" speed grade delivers the standard 30 ns propagation. An isolated gate driver is a semiconductor component that combines a digital isolator and a gate driver in one package. It transmits PWM or control logic across a high-voltage isolation barrier (typically 2.5 kVRMS to 5 kVRMS) while providing the high peak currents (several amps) and voltage swings required to charge and discharge the gate of a power MOSFET, IGBT, SiC, or GaN transistor. Isolated gate drivers sit in the power management IC hierarchy between the low-voltage control domain (an MCU or DSP) and the high-voltage power domain (a half-bridge or full-bridge inverter). Compared to optocoupler-based drivers, CMOS-based capacitive isolators such as the Si823x family offer tighter timing, lower propagation skew, and longer operational lifetime. Key features include 4.0 A peak sink/source drive current per channel, 60 ns propagation delay matching between channels, 30 ns typical propagation delay, AEC-Q100 qualification, and AIAG-compliant PPAP documentation support for automotive platforms. The wide-body and narrow-body SOIC options plus LGA-14 and QFN-14 footprints give designers flexibility across PCB density targets. High electromagnetic immunity suits noisy motor-drive and SMPS environments where dv/dt-induced transients can corrupt logic on the control side. The Si823x architecture uses Skyworks' proprietary silicon dielectric isolation to provide up to 5 kVRMS withstand per UL1577 and a 1500 VDC peak driver-to-driver differential voltage. Each driver channel is independently powered, allowing independent high-side and low-side rails or simply two isolated low-side rails for paralleled MOSFETs. The dead-time and overlap behavior is determined entirely by the controller; the Si828x does not insert dead-time internally, simplifying firmware-managed timing on the MCU side. Typical applications include isolated half-bridge and full-bridge motor drives, industrial inverters, solar microinverters, telecom DC-DC bricks, and traction inverters in EV auxiliary subsystems. The high peak current also suits SiC MOSFET gates, which require 4 A or more to switch within 20-50 ns for efficient high-frequency operation. AEC-Q100 qualification makes the -Q automotive-grade OPNs usable in on-board chargers and traction inverters. When designing with this part, ensure the VDD supply for each driver side is decoupled with 1 uF and 100 nF ceramic capacitors placed within 2 mm of the IC pins. Respect the 1500 VDC peak driver-to-driver differential voltage to avoid insulation breakdown if the two channels are tied to different switching nodes. Use a bootstrap diode or isolated DC-DC converter when the driver is configured for high-side switching. This page synthesizes distributor pricing for the SI8238BB-D-IS1, lists verified drop-in pin-compatible alternatives from the Si823x family, and adds practical design notes beyond the datasheet, including UVLO timing analysis, PCB layout for capacitive isolation, and SiC gate-drive considerations.
SI8241BB-B-IS1 - 2.5 kV Class D Audio Driver | Silicon Labs
The Silicon Labs SI8241BB-B-IS1 is a two-channel isolated Class D audio gate driver rated for a 2.5 kV isolation target and 0.5 A output drive current in a 16-SOIC package. It accepts PWM input, provides a precision programmable dead-time generator, and targets high-power Class D audio power amplifiers above 30 W. An isolated gate driver sits between a controller and the high-voltage, high-current MOSFETs in a power-conversion stage. The SI824x family combines input-to-output isolation with high-side and low-side drive functions, allowing a Class D audio amplifier to use a low-voltage control domain while switching a separate, potentially high-voltage output domain. The SI8241 is specifically oriented toward high-fidelity audio rather than general-purpose isolated communication. Key verified characteristics include two isolated driver channels, PWM input, 2.5 kV isolation capability, 0.5 A output drive current, 8 V UVLO, precision linear programmable dead time, high latchup immunity greater than 100 V/ns, output-to-output isolation rated at 1500 Vrms, and supply voltage values of ±750 V as described in the retrieved manufacturer-family datasheet information. The 16-SOIC package matches the verified distributor listing. The device combines separate high-side and low-side gate-drive outputs with dead-time control, which is important because MOSFET conduction overlap can increase loss and distortion. Independent isolation between control and power domains can simplify safety-oriented partitioning, although the complete amplifier still requires correctly rated DC buses, insulation, surge protection, and layout isolation. The isolation barrier should not be treated as a substitute for system-level safety validation. Typical applications are stereo and multichannel Class D audio amplifiers, powered speakers, soundbars, home-theater receivers, professional audio equipment, and other systems using external MOSFET output stages. It is most appropriate where PWM modulation and a high-power MOSFET bridge are already part of the signal chain, not as a replacement for a finished audio power amplifier. When laying out this device, keep primary-side and secondary-side copper and input paths separated, use the manufacturer-recommended isolation and bypass layout, and place gate-driver outputs close to the corresponding MOSFET gates. Confirm dead time, UVLO behavior, bus transients, and thermal conditions against the final power stage. This page combines verified distributor and manufacturer-family information with engineering selection guidance rather than inventing unspecified electrical details.
SI8241BB-D-IS1 - 0.5A Isolated Class D Driver | Skyworks
The Skyworks Solutions SI8241BB-D-IS1 is a dual isolated gate-driver IC for Class D audio power stages, delivering 0.5 A peak output current, 2.5 kV isolation, and PWM input support in a 16-pin SOIC package. The device is identified by DigiKey as an audio line driver and by Mouser as a dual gate driver for Class D amplifiers. Its 8 V undervoltage lockout helps prevent unintended gate drive during startup, while its isolated driver architecture places each output on a separate side of the power-conversion barrier. A gate driver is a specialized interface between a low-voltage controller and the gate of a power MOSFET or IGBT. In a Class D audio system, the controller produces PWM signals, while the gate driver supplies higher-current switching pulses and provides galvanic isolation between the control side and the amplified output stage. This hierarchy places the SI8241BB-D-IS1 between a digital audio controller and the power semiconductors that generate the speaker current. The verified product information identifies two driver channels, 0.5 A peak output current, 2.5 kV isolation, 8 V undervoltage lockout, and a 16-SOIC package. The dual-channel arrangement supports isolated half-bridge or full-bridge Class D topologies, where complementary gate timing and dead time influence distortion, switching losses, and reliability. The isolated output channels allow the high-side and low-side drivers to be placed on different supply domains while retaining a common control-side reference. In the Si824x family description, the drivers are targeted at high-power audio applications above 30 W and use proprietary isolation technology. This makes the part relevant to audio amplifiers, subwoofer stages, compact consumer-audio systems, and industrial audio equipment. The 0.5 A peak-current capability should be checked against the gate charge, switching frequency, and MOSFET input capacitance of the final power stage; a driver current requirement cannot be assessed from package size alone. The verified distributor data does not provide a complete electrical table, absolute-maximum-rating list, timing graph, thermal resistance, or complete pin mapping. Those values must therefore be confirmed against the manufacturer datasheet before production design. In particular, verify propagation delay, dead-time behavior, output configuration, UVLO thresholds, isolation capacitance, creepage, and recommended PCB clearances. The SI8241BB-D-IS1 is best used when the design requires isolated Class D gate drive and a 16-SOIC footprint. Designers should preserve the datasheet-recommended isolation layout, keep high-voltage and low-voltage routing segregated, and select external MOSFETs whose gate charge remains compatible with the verified 0.5 A peak-current specification. LCSC lists the part in stock with a starting price of $1.2873; distributor pricing and availability should be confirmed at the time of purchase. This page combines verified distributor listings, the Skyworks family description, package information, and practical design guidance. It also records missing electrical data transparently rather than estimating values, allowing engineers to compare sourcing options while completing the necessary datasheet verification.
SI8241BB-D-IS1R - 0.5A Isolated Class D Driver | Skyworks (Tape & Reel)
The Skyworks Solutions SI8241BB-D-IS1R is a dual isolated gate-driver IC for Class D audio power stages, delivering 0.5 A peak output current, 2.5 kV isolation, and PWM input support in a 16-pin SOIC package. The device is identified by DigiKey as an audio line driver and by Mouser as a dual gate driver for Class D amplifiers. Its 8 V undervoltage lockout helps prevent unintended gate drive during startup, while its isolated driver architecture places each output on a separate side of the power-conversion barrier. A gate driver is a specialized interface between a low-voltage controller and the gate of a power MOSFET or IGBT. In a Class D audio system, the controller produces PWM signals, while the gate driver supplies higher-current switching pulses and provides galvanic isolation between the control side and the amplified output stage. This hierarchy places the SI8241BB-D-IS1R between a digital audio controller and the power semiconductors that generate the speaker current. The verified product information identifies two driver channels, 0.5 A peak output current, 2.5 kV isolation, 8 V undervoltage lockout, and a 16-SOIC package. The dual-channel arrangement supports isolated half-bridge or full-bridge Class D topologies, where complementary gate timing and dead time influence distortion, switching losses, and reliability. The isolated output channels allow the high-side and low-side drivers to be placed on different supply domains while retaining a common control-side reference. In the Si824x family description, the drivers are targeted at high-power audio applications above 30 W and use proprietary isolation technology. This makes the part relevant to audio amplifiers, subwoofer stages, compact consumer-audio systems, and industrial audio equipment. The 0.5 A peak-current capability should be checked against the gate charge, switching frequency, and MOSFET input capacitance of the final power stage; a driver current requirement cannot be assessed from package size alone. The verified distributor data does not provide a complete electrical table, absolute-maximum-rating list, timing graph, thermal resistance, or complete pin mapping. Those values must therefore be confirmed against the manufacturer datasheet before production design. In particular, verify propagation delay, dead-time behavior, output configuration, UVLO thresholds, isolation capacitance, creepage, and recommended PCB clearances. The SI8241BB-D-IS1R is best used when the design requires isolated Class D gate drive and a 16-SOIC footprint. Designers should preserve the datasheet-recommended isolation layout, keep high-voltage and low-voltage routing segregated, and select external MOSFETs whose gate charge remains compatible with the verified 0.5 A peak-current specification. LCSC lists the part in stock with a starting price of $1.2873; distributor pricing and availability should be confirmed at the time of purchase. This page combines verified distributor listings, the Skyworks family description, package information, and practical design guidance. It also records missing electrical data transparently rather than estimating values, allowing engineers to compare sourcing options while completing the necessary datasheet verification.
SI8241CB-B-IS1 - 2.5kV Class D Audio Driver | Silicon Labs
The Silicon Labs SI8241CB-B-IS1 is a two-channel Class D audio gate driver with a precision dead-time generator, PWM input, 2.5 kV isolation, and a 16-pin SOIC package. The verified distributor data identifies it as a 0.5 A Class D audio driver with 10 V UVLO and a 4.5 V to 5.5 V supply range. It is designed to drive the external MOSFET power stage used in high-fidelity Class D audio power amplifiers. A Class D audio driver is a gate-driver interface between a low-power PWM control signal and the high-current, high-voltage switching MOSFETs in an audio power stage. The SI824x family combines differential or complementary gate-drive capability with dead-time control, helping prevent shoot-through and supporting clean amplification. Its role sits between the audio PWM modulator and the output power MOSFETs. Verified features include a PWM input, a high-precision linear programmable dead-time generator, high latchup immunity greater than 100 V/ns, 1500 Vrms output-to-output isolation, and supply-voltage ratings of ±750 V. The Si824x family is described as suitable for Class D power amplifiers from 30 W and higher. The SI8241CB-B-IS1 is a two-channel 16-SOIC device; its exact output-current and propagation-delay details are not fully present in the supplied data. The device is used where a PWM audio controller requires isolated, high-voltage gate-drive signaling. Typical system positions include the gate-driver stage in stereo Class D power amplifiers, isolated audio-output subsystems, and industrial or professional audio equipment where external MOSFETs form the switching output stage. The 16-SOIC package is surface-mount and compatible with standard PCB assembly methods. Designers should verify dead-time settings against the selected MOSFET gate charges and the amplifier's switching requirements. Keep high-voltage gate-drive traces short, provide adequate bypassing, and observe the manufacturer's isolation and creepage guidance when routing output-side circuitry. The verified distributor inventory and pricing should be checked at the time of purchase because distributor data can change. This page consolidates the verified distributor descriptions, package information, isolation claims, functional application context, and engineering cautions for SI8241CB-B-IS1. Unpublished electrical details, exact pin functions, lifecycle classification, and validated drop-in alternatives remain explicitly marked or excluded rather than inferred.
SI8241CB-B-IS1R - 2.5kV Class D Audio Driver | Silicon Labs (Tape & Reel)
The Silicon Labs SI8241CB-B-IS1R is a two-channel Class D audio gate driver with a precision dead-time generator, PWM input, 2.5 kV isolation, and a 16-pin SOIC package. The verified distributor data identifies it as a 0.5 A Class D audio driver with 10 V UVLO and a 4.5 V to 5.5 V supply range. It is designed to drive the external MOSFET power stage used in high-fidelity Class D audio power amplifiers. A Class D audio driver is a gate-driver interface between a low-power PWM control signal and the high-current, high-voltage switching MOSFETs in an audio power stage. The SI824x family combines differential or complementary gate-drive capability with dead-time control, helping prevent shoot-through and supporting clean amplification. Its role sits between the audio PWM modulator and the output power MOSFETs. Verified features include a PWM input, a high-precision linear programmable dead-time generator, high latchup immunity greater than 100 V/ns, 1500 Vrms output-to-output isolation, and supply-voltage ratings of ±750 V. The Si824x family is described as suitable for Class D power amplifiers from 30 W and higher. The SI8241CB-B-IS1R is a two-channel 16-SOIC device; its exact output-current and propagation-delay details are not fully present in the supplied data. The device is used where a PWM audio controller requires isolated, high-voltage gate-drive signaling. Typical system positions include the gate-driver stage in stereo Class D power amplifiers, isolated audio-output subsystems, and industrial or professional audio equipment where external MOSFETs form the switching output stage. The 16-SOIC package is surface-mount and compatible with standard PCB assembly methods. Designers should verify dead-time settings against the selected MOSFET gate charges and the amplifier's switching requirements. Keep high-voltage gate-drive traces short, provide adequate bypassing, and observe the manufacturer's isolation and creepage guidance when routing output-side circuitry. The verified distributor inventory and pricing should be checked at the time of purchase because distributor data can change. This page consolidates the verified distributor descriptions, package information, isolation claims, functional application context, and engineering cautions for SI8241CB-B-IS1R. Unpublished electrical details, exact pin functions, lifecycle classification, and validated drop-in alternatives remain explicitly marked or excluded rather than inferred.
SI8241CB-D-IS1 - Dual-Class-D Audio Gate Driver | Silicon Labs
The Silicon Labs SI8241CB-D-IS1 is a dual-channel audio gate driver for Class-D amplifier half-bridges, with a -40 °C to +125 °C operating-temperature range and a 16-SOIC package. The verified distributor listings classify it as a two-channel, 16-SOIC audio line driver, while component references describe the SI8241CB family as an audio gate-driver solution for high-fidelity Class-D amplification. The -D suffix and -IS1 ordering code identify the exact catalogued device, while reel or tape orientation is handled by the manufacturer ordering system. A Class-D gate driver is a type of power MOSFET driver that translates a low-voltage audio-control signal into complementary high-voltage gate-drive signals for an audio output half-bridge. It sits between the Class-D modulator or controller and the power transistors. In the system hierarchy, this component is a gate driver within a Class-D audio amplifier, rather than the audio DAC, power-conversion stage, or loudspeaker itself. Its purpose is to provide the required switching and timing control for the power MOSFETs that deliver audio energy to the load. The verified data specifically establishes a two-channel configuration, 16-SOIC package, and -40 °C to +125 °C temperature range. Other information such as supply voltage, source and sink current, propagation delay, input thresholds, dead-time controls, and pin-level truth tables is not present in the supplied records and must be confirmed from the manufacturer datasheet before schematic design. Distributor metadata from DigiKey lists the device as “Audio Line Driver 2 Channel 16-SOIC,” which is consistent with a dual-channel gate-driver role. The SI8241CB family is associated with precise dead-time adjustment and low total harmonic distortion in Class-D amplification. Those characteristics matter because incorrect MOSFET transition timing can create cross-conduction, excessive shoot-through current, or distorted output. The exact adjustment method, permitted dead-time range, and THD conditions are not supplied here, so they should not be inferred from the distributor snippets. Potential uses include stereo Class-D audio amplifiers, powered speakers, sound bars, automotive audio systems, portable audio equipment, and other audio power stages where two half-bridges are driven from one controller. The wide verified temperature range makes the device relevant to industrial and automotive environments, but qualification status for a particular vehicle platform still requires separate documentation. For PCB design, preserve the manufacturer-recommended input, output, supply, and ground connections exactly, and verify all 16 pin functions in the official datasheet before layout. Treat gate traces as high-current, high-dv/dt paths, minimize loop area around each MOSFET and driver, and validate dead time and thermal behavior in the final Class-D power stage. This product record combines verified distributor availability, package and temperature information, source links, and engineering cautions where source data is missing. It is intended to help engineers identify the correct catalogued MPN while avoiding unsupported assumptions about electrical limits or compatibility.
SI8241CB-D-IS1R - Dual-Class-D Audio Gate Driver | Silicon Labs (Tape & Reel)
The Silicon Labs SI8241CB-D-IS1R is a dual-channel audio gate driver for Class-D amplifier half-bridges, with a -40 °C to +125 °C operating-temperature range and a 16-SOIC package. The verified distributor listings classify it as a two-channel, 16-SOIC audio line driver, while component references describe the SI8241CB family as an audio gate-driver solution for high-fidelity Class-D amplification. The -D suffix and -IS1 ordering code identify the exact catalogued device, while reel or tape orientation is handled by the manufacturer ordering system. A Class-D gate driver is a type of power MOSFET driver that translates a low-voltage audio-control signal into complementary high-voltage gate-drive signals for an audio output half-bridge. It sits between the Class-D modulator or controller and the power transistors. In the system hierarchy, this component is a gate driver within a Class-D audio amplifier, rather than the audio DAC, power-conversion stage, or loudspeaker itself. Its purpose is to provide the required switching and timing control for the power MOSFETs that deliver audio energy to the load. The verified data specifically establishes a two-channel configuration, 16-SOIC package, and -40 °C to +125 °C temperature range. Other information such as supply voltage, source and sink current, propagation delay, input thresholds, dead-time controls, and pin-level truth tables is not present in the supplied records and must be confirmed from the manufacturer datasheet before schematic design. Distributor metadata from DigiKey lists the device as “Audio Line Driver 2 Channel 16-SOIC,” which is consistent with a dual-channel gate-driver role. The SI8241CB family is associated with precise dead-time adjustment and low total harmonic distortion in Class-D amplification. Those characteristics matter because incorrect MOSFET transition timing can create cross-conduction, excessive shoot-through current, or distorted output. The exact adjustment method, permitted dead-time range, and THD conditions are not supplied here, so they should not be inferred from the distributor snippets. Potential uses include stereo Class-D audio amplifiers, powered speakers, sound bars, automotive audio systems, portable audio equipment, and other audio power stages where two half-bridges are driven from one controller. The wide verified temperature range makes the device relevant to industrial and automotive environments, but qualification status for a particular vehicle platform still requires separate documentation. For PCB design, preserve the manufacturer-recommended input, output, supply, and ground connections exactly, and verify all 16 pin functions in the official datasheet before layout. Treat gate traces as high-current, high-dv/dt paths, minimize loop area around each MOSFET and driver, and validate dead time and thermal behavior in the final Class-D power stage. This product record combines verified distributor availability, package and temperature information, source links, and engineering cautions where source data is missing. It is intended to help engineers identify the correct catalogued MPN while avoiding unsupported assumptions about electrical limits or compatibility.
SI8244BB-D-IS1 - 2-Channel Isolated Class-D Audio Driver
The Silicon Labs SI8244BB-D-IS1 is a two-channel isolated Class-D audio gate driver with a precision dead-time generator, 2.5 kV isolation, and a 16-SOIC package. The device combines input-to-output and output-to-output isolation, enabling signal-level translation without additional external isolation circuits. It is intended for high-power audio systems requiring isolated gate-drive behavior and improved control of amplifier switching transitions. A Class-D audio driver is a semiconductor interface that controls the switching devices in a Class-D power amplifier. It translates a control signal into suitable high-side and low-side gate-drive signals, helping the amplifier produce high-fidelity audio efficiently. The Si824x family is specifically designed for high-power audio applications, with the Si8241 and Si8244 identified as drivers for systems above 30 W in the manufacturer datasheet. Key features include two isolated driver channels, precise dead-time adjustment, isolation between input and output, and isolation between output channels. These characteristics support reduced total harmonic distortion and a balance between low distortion and high system efficiency. The SI8244BB-D-IS1 is listed by DigiKey as a two-channel, 16-SOIC audio line driver and by Mouser as a 2.5 kV audio gate driver. The Si824x architecture is intended to simplify gate-drive and isolation implementation in audio converters. The precision dead-time generator controls overlap between complementary switching paths, which is important for preventing shoot-through and improving amplifier behavior. The -D-IS1 ordering code identifies the Silicon Labs variant supplied in the specified package and qualification arrangement; detailed ordering, electrical, and environmental limits should be confirmed against the current manufacturer datasheet. Typical applications include isolated Class-D audio power stages, high-power speaker amplifiers, isolated audio input systems, and audio conversion equipment requiring two complementary gate-drive channels. The isolation architecture can help reduce ground-loop and signal-integrity problems when the amplifier side must be separated from the control side. Designers should verify supply rails, gate-drive voltage, dead-time behavior, isolation ratings, bypass-capacitor placement, and output-device requirements in the exact datasheet revision. Because the verified search results provide limited detailed electrical tables, values not explicitly present in the supplied data are marked as unavailable rather than inferred.
SI8244BB-D-IS1R - 2-Channel Isolated Class D Driver | Skyworks
The Skyworks Solutions SI8244BB-D-IS1R is a 2-channel isolated Class D audio gate driver with a precision dead-time generator, supplied in a 16-pin SOIC surface-mount package. Verified distributor data identifies it as a 2-channel audio driver, while the manufacturer describes the Si8244BB-IS1 family as isolated drivers intended for high-fidelity Class D amplification. The verified source data does not provide a complete electrical parameter table, so voltage, current, timing, isolation, and thermal values are not inferred here. What is an isolated Class D audio gate driver? An isolated gate driver is a power-management and signal-conditioning device that transfers control signals across an isolation barrier. In a Class D audio power stage, it drives switching devices such as MOSFETs in a full-bridge or half-bridge topology. Its dead-time function controls how long both switches remain off during transition, helping prevent shoot-through while allowing the power amplifier to switch efficiently. The Si824x family combines two isolated drivers in one package and supports audio signal isolation and level translation. The SI8244BB-D-IS1R is identified in the verified data as a 16-SOIC, two-channel audio line driver. Skyworks states that the SI8244BB-IS1 family supports precise dead-time adjustment, balancing low total harmonic distortion against system efficiency. The -IS1R suffix is treated as the exact ordering code supplied by the distributor data; no unverified package, grade, or temperature details are added. Typical uses include isolated Class D speaker amplifiers, high-power audio power stages, isolated preamplifier interfaces, and audio systems requiring high-side and low-side switch control. The 16-SOIC package is suitable for conventional surface-mount PCB assembly. Exact gate-drive voltage, propagation delay, dead-time range, isolation rating, channel polarity, and output-current limits must be confirmed in the manufacturer datasheet before final design release. A key design consideration is that isolation and switching requirements dominate PCB layout. Keep the isolation barrier geometry compliant with the manufacturer’s creepage and clearance guidance, isolate high-voltage switching nodes from logic and audio grounds, and place gate-loop components to minimize parasitic inductance. Do not infer that an equivalent-looking audio driver is electrically interchangeable without checking pin names, dead-time behavior, voltage ratings, and isolation architecture. This page combines verified distributor listings, the official Skyworks family page, the manufacturer datasheet link, application guidance, and clearly marked data gaps for unreported parameters. It is designed to support early component selection while avoiding fabricated specifications.
SI8244CB-C-IS1 - 4A Isolated Class-D Driver | Skyworks
The Skyworks Solutions SI8244CB-C-IS1 is a two-channel isolated Class-D audio gate driver rated for 4 A output current, 2.5 kV isolation, and operation from a 10 V undervoltage lockout threshold in a 16-pin SOIC package. The SI824x family combines isolated high-side and low-side drivers for high-power audio amplification, with precise programmable dead time intended to balance low total harmonic distortion against system efficiency. An isolated gate driver is a semiconductor interface that transfers timing commands across a galvanic-isolation barrier while placing the drive outputs on the isolated output side. In a full-bridge Class-D amplifier, it coordinates complementary MOSFET switching, prevents unwanted cross-conduction through dead time, and helps the power stage reproduce high-fidelity audio. The SI8244CB-C-IS1 is specifically described as a Class-D audio driver with a precision dead-time generator. The verified product listing identifies two channels, a 4 A output rating, 2.5 kV isolation, a 10 V UVLO threshold, and PWM input. Additional source material describes high latchup immunity above 100 V/ns, 1500 Vrms output-to-output isolation, and supply voltage ratings of ±750 V. A high-precision linear programmable dead-time generator supports system tuning for the required tradeoff between distortion and switching efficiency. Skyworks states that the Si8244 family targets isolated high-side and low-side gate driving in audio systems above 30 W. Because each channel is isolated from the input side and from the other output channel, the device can support transformer- or capacitor-isolated class-D power stages where maintaining separation and controlling ground noise are important. Its isolated architecture also helps keep switching energy away from sensitive audio-ground domains. Typical uses include high-fidelity active speakers, professional audio amplifiers, subwoofer power stages, home-theater amplification, and other isolated full-bridge audio systems. PWM input compatibility makes it suitable for audio DACs, digital-audio processors, and dedicated Class-D controller outputs. System design should account for the external isolation barrier, isolated supplies, gate resistors, MOSFET selection, and thermal paths. A key layout consideration is the isolation barrier: high dV/dt on outputs can couple displacement current into nearby input-side circuitry, so copper, creepage, and clearance must follow the manufacturer isolation guidance. Gate-loop inductance, dead time, supply bypassing, and Kelvin source returns also directly affect switching loss and distortion. This page combines the verified manufacturer and distributor information, a controlled SI8244CB-D-IS1 replacement lead, and practical engineering guidance. It also identifies missing values rather than inventing ratings, prices, or a complete pin map where the supplied sources do not expose exact information.
SI8244CB-C-IS1R - 4A Isolated Class-D Driver | Skyworks (Tape & Reel)
The Skyworks Solutions SI8244CB-C-IS1R is a two-channel isolated Class-D audio gate driver rated for 4 A output current, 2.5 kV isolation, and operation from a 10 V undervoltage lockout threshold in a 16-pin SOIC package. The SI824x family combines isolated high-side and low-side drivers for high-power audio amplification, with precise programmable dead time intended to balance low total harmonic distortion against system efficiency. An isolated gate driver is a semiconductor interface that transfers timing commands across a galvanic-isolation barrier while placing the drive outputs on the isolated output side. In a full-bridge Class-D amplifier, it coordinates complementary MOSFET switching, prevents unwanted cross-conduction through dead time, and helps the power stage reproduce high-fidelity audio. The SI8244CB-C-IS1R is specifically described as a Class-D audio driver with a precision dead-time generator. The verified product listing identifies two channels, a 4 A output rating, 2.5 kV isolation, a 10 V UVLO threshold, and PWM input. Additional source material describes high latchup immunity above 100 V/ns, 1500 Vrms output-to-output isolation, and supply voltage ratings of ±750 V. A high-precision linear programmable dead-time generator supports system tuning for the required tradeoff between distortion and switching efficiency. Skyworks states that the Si8244 family targets isolated high-side and low-side gate driving in audio systems above 30 W. Because each channel is isolated from the input side and from the other output channel, the device can support transformer- or capacitor-isolated class-D power stages where maintaining separation and controlling ground noise are important. Its isolated architecture also helps keep switching energy away from sensitive audio-ground domains. Typical uses include high-fidelity active speakers, professional audio amplifiers, subwoofer power stages, home-theater amplification, and other isolated full-bridge audio systems. PWM input compatibility makes it suitable for audio DACs, digital-audio processors, and dedicated Class-D controller outputs. System design should account for the external isolation barrier, isolated supplies, gate resistors, MOSFET selection, and thermal paths. A key layout consideration is the isolation barrier: high dV/dt on outputs can couple displacement current into nearby input-side circuitry, so copper, creepage, and clearance must follow the manufacturer isolation guidance. Gate-loop inductance, dead time, supply bypassing, and Kelvin source returns also directly affect switching loss and distortion. This page combines the verified manufacturer and distributor information, a controlled SI8244CB-D-IS1 replacement lead, and practical engineering guidance. It also identifies missing values rather than inventing ratings, prices, or a complete pin map where the supplied sources do not expose exact information.
SI8271AB-ISR - 4A Isolated Gate Driver, 2.5kV, 8-SOIC | Skyworks
The Skyworks Solutions (formerly Silicon Labs) SI8271AB-ISR is a 4 A galvanically isolated single-channel gate driver in an 8-pin SOIC (Narrow Body) package with 2.5 kV RMS isolation and high CMTI performance. It combines an RF-coupled digital isolator with a 4 A peak source/sink driver output stage, making it a drop-in solution for driving MOSFETs, IGBTs, and SiC or GaN FETs across an isolation barrier without an external isolated bias. An isolated gate driver is a semiconductor device that transmits a PWM control signal across a galvanic isolation barrier (typically 2.5 kV to 5 kV RMS) while providing the high peak gate currents required to switch power transistors quickly. Isolated gate drivers belong to the gate driver family, which sits under power management ICs in the broader semiconductor taxonomy. They are essential in any topology where the control circuitry operates at a different ground potential than the power stage, including half-bridge and full-bridge converters, motor drives, and isolated DC/DC stages. Key features include 4 A peak output drive current, 2.5 kV RMS isolation voltage, >400 kV/us common-mode transient immunity (CMTI), and a wide driver supply range of 4.6 V to 30 V. The device supports a 5 V UVLO with deglitch circuit for noisy input rejection, an enable pin for shutdown control, and a DT pin for highly precise dead-time programming. A very high latch-up spec of 400 kV/us makes the SI8271AB-ISR extremely robust, eliminating the latch-up risk posed by faster switching speeds of modern SiC/GaN FETs. Architecturally, the SI8271AB-ISR uses an RF carrier modulation scheme (rather than optocoupler LED degradation) to cross the isolation barrier, ensuring long-term stability, low propagation delay (typically ~30 ns), and TTL-compatible inputs. This makes it well-suited for high-frequency switching converters where propagation skew directly impacts efficiency and dead-time accuracy. Typical applications include isolated DC/DC converters, motor drive gate drivers (three-phase inverter IGBT modules), solar inverters, industrial PLC outputs, and SiC/GaN FET half-bridge drivers in telecom and server power supplies. Designers should observe the recommended PCB creepage/clearance for 2.5 kV isolation, place a 1 uF bypass capacitor on VDD close to the driver, and program the DT pin to enforce the FET manufacturer-specified dead time. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
SI8273AB-D-IM - 4A Isolated Gate Driver, 2.5kV, 14-LGA | Skyworks
The Skyworks (formerly Silicon Labs) SI8273AB-D-IM is a 4 A isolated gate driver that combines a single PWM or dual digital input architecture with 2.5 kVRMS galvanic isolation in a 14-pin LGA (5x5 mm) package. It supports 2.5 V to 5.5 V input-side supply and up to 25 V driver-side supply, delivering 4 A peak source/sink drive current to switch power MOSFETs, IGBTs, and SiC FETs with sub-60 ns propagation delay. The integrated RF-coupled isolation barrier provides 2.5 kVRMS withstand voltage per UL1577 and VDE 0884-11 (basic insulation), eliminating the need for optocouplers and their aging-related CTR degradation. A gate driver is a power-conversion building block that level-shifts a low-power logic signal (typically 3.3 V or 5 V CMOS) to a high-current drive signal needed to charge and discharge the gate capacitance of a power semiconductor switch. Within the broader power-management hierarchy, isolated gate drivers sit between the control MCU and the power stage in switch-mode power supplies (SMPS), motor drives, and inverters. The SI8273AB-D-IM specifically targets half-bridge and high-side/low-side (HS/LS) topologies where logic and power grounds must remain galvanically isolated for safety or for floating high-side drive. The Si827x family is engineered around proprietary silicon RF capacitive coupling, which yields best-in-class common-mode transient immunity (CMTI) of 200 kV/µs minimum (400 kV/µs typical) and tight part-to-part propagation delay matching. Selectable 3 V or 5 V UVLO thresholds protect downstream power switches against partial-gate-drive transients, while the integrated deglitch filter suppresses noisy PWM edges that can cause shoot-through in half-bridges. The −40 °C to +125 °C operating range and high noise immunity make these parts especially well suited to industrial environments with long motor cables and high dv/dt switching nodes. Typical applications include isolated DC/DC converters, solar inverters, industrial motor drives (BLDC/PMSM), HEV/EV traction inverters, and digital-controlled class-D audio amplifiers where the logic domain and power-switching node must remain isolated to satisfy safety insulation and to tolerate harsh switching transients. When routing this part, place the bypass capacitors (≥1 µF input-side, ≥10 µF driver-side) within 2 mm of their respective VDD pins to keep the high-side bootstrap supply stable during a 4 A gate-charge pulse. The exposed pad/LGA thermal pad must be soldered to a continuous ground pour to manage thermal rise under sustained switching at high PWM duty cycles.