Power Management
Subcategories
Products (2,800+)
PDRV8343SPHPRQ1 - 60V 3-Phase Smart Gate Driver | Texas Instruments
The Texas Instruments PDRV8343SPHPRQ1 is an automotive-grade 5.5V to 60V three-phase smart gate driver with three integrated current shunt amplifiers, housed in a 48-pin HTQFP (PHP) 7x7mm package. It provides three independent half-bridge gate drivers each capable of driving high-side and low-side N-channel power MOSFETs, supports SPI configuration, and is qualified to AEC-Q100 for 12V/24V automotive systems. What is a three-phase smart gate driver? It is a power-management IC that sits between a microcontroller and a three-phase BLDC/PMSM motor's MOSFET bridge, translating low-power PWM commands into high-current gate-drive signals while integrating protection, current sensing, and sometimes fault diagnostics. Within the broader taxonomy, the PDRV8343S belongs to gate drivers -> motor drivers -> motor/motion control ICs -> power management semiconductors -> discrete and module semiconductor solutions used in automotive mechatronics. Key features include a wide 5.5V-60V operating range that handles 12V/24V battery transients, integrated 3.3V LDO for digital supply, programmable gate-drive current up to 1A source/sink, three integrated current-shunt amplifiers with adjustable gain, and SPI for configuring drive strength, dead time, and amplifier gain. Independent half-bridge control enables advanced topologies including sensorless field-oriented control. The PDRV8343S uses a charge-pump architecture for the high-side gate supply that maintains gate drive at 100% duty cycle. Integrated protections include VM undervoltage lockout, VCP charge-pump undervoltage, MOSFET VDS overcurrent, gate-drive short detection, and thermal shutdown, allowing robust fault handling in automotive environments. Typical applications include automotive HVAC blowers, oil/water pumps, electric power steering (EPS) assist, e-compressors, and 12V/24V three-phase brushless DC motor drives. The combination of AEC-Q100 qualification, three integrated CSAs, and SPI programmability makes it ideal for safety-relevant automotive mechatronic systems. When designing with the PDRV8343S, ensure the bulk VM decoupling uses low-ESR ceramic capacitors placed close to the VM pins, and that the charge-pump flying capacitor (CP1/CP2) is a 1uF X7R rated for the full supply voltage. Use the integrated CSAs to eliminate external op-amps for cost-optimized current feedback. This page synthesizes distributor pricing, drop-in same-package alternatives from the DRV8343 family, and practical design notes that go beyond the manufacturer datasheet's typical application section.
PDS-408G - 8+3 Port 480W PoE Switch | Microchip
The Microchip PDS-408G is a Digital Ceiling Power-over-Ethernet (PoE) managed switch delivering up to 480 W total output power across 8 PoE-capable downlink ports plus 3 uplink ports, in a fanless chassis designed for above-ceiling or comms-room deployment. It supports IEEE 802.3bt (PoE++) with per-port output up to 90 W and full-power mode delivering 60 W simultaneously on all 8 PoE ports, while remaining silent thanks to its convection-cooled, fanless design. A Power-over-Ethernet switch is a Layer-2/Layer-3 networking device that injects DC power onto twisted-pair Ethernet cabling so that end devices such as wireless access points, IP cameras, VoIP phones, and luminaires can receive both data and operating power from a single Cat5e/Cat6 cable. The PDS-408G belongs to the managed PoE switch category within the broader power-management and networking hierarchy, sitting alongside midspan injectors and PoE-aware Ethernet switches in structured cabling topologies. Key features include automatic PoE power negotiation based on PD (Powered Device) class detection, full IEEE 802.3bt Type 3/Type 4 compliance, support for VLAN, link aggregation, and remote management via web UI, CLI, Telnet, and SSH. The 480 W power budget enables high-density PoE lighting and digital ceiling deployments, while the fanless thermal design allows silent operation in plenum spaces. The PDS-408G integrates Microchip's latest Power Source Equipment (PSE) controller technology, supporting both legacy 802.3at and newer 802.3bt PDs on the same switch fabric. Each port dynamically allocates power based on the connected PD class signature, protecting the system from overload while maximizing port utilization. The switch provides per-port PoE enable/disable, priority, and power-budgeting controls through its management interface. Typical applications include commercial PoE lighting in offices and warehouses, digital ceiling installations combining lighting with sensors and Wi-Fi APs, smart-building IoT backbones, and structured cabling for IP surveillance cameras. It is also deployed in education and healthcare facilities where centralized PoE management reduces operating costs. When designing with the PDS-408G, verify the upstream AC circuit capacity, plan cable runs to stay within 100 m Ethernet limits, and ensure plenum-space mounting complies with local fire codes. Use managed features to segment traffic and to schedule PoE reboots for remote troubleshooting. This page synthesizes distributor pricing, datasheet specifications, and practical deployment notes not found in a single manufacturer document.
PDS-408G/AC - 8+3 Port 480W PoE+ Switch | Microchip
The Microchip Technology PDS-408G/AC is a managed 8+3 port digital ceiling Power-over-Ethernet (PoE) switch delivering up to 480 W of total PoE budget from a fan-less AC-powered chassis designed for in-ceiling or communications-room mounting. The headline rating is 60 W simultaneous on all 8 Gigabit PoE+ ports with any single port capable of 90 W under IEEE 802.3bt (PoE++ / Type 3/4), plus 3 additional non-PoE uplink/downlink ports for a total of 11 managed ports. The /AC suffix denotes the AC input variant supplied with a US NEMA 5-15P mains plug. A PoE switch is a Layer-2 Ethernet switch with embedded power-sourcing equipment (PSE) controller functionality that injects DC voltage onto the unused twisted pairs (or all four pairs under 802.3bt) of 100BASE-TX / 1000BASE-T Ethernet cables to power connected powered devices (PDs) such as wireless access points, IP cameras, VoIP phones, and luminaires. The PDS-408G/AC belongs to the digital-ceiling PoE-switch family, which sits in the broader taxonomy: PoE switch -> managed Ethernet switch -> network infrastructure -> IT/OT building equipment. It is engineered specifically for high-density PoE lighting and digital-ceiling deployments where centralized low-voltage DC distribution is impractical. Key differentiating features include per-port auto-class detection (the switch dynamically allocates power based on the PD's advertised class), fan-less convection cooling (silent operation suitable for above-ceiling plenums), automatic output PoE power based on PD device class, and full-power mode that guarantees 60 W on every port simultaneously. The chassis supports Layer-2 management features (VLAN, link aggregation, QoS) accessible via a web GUI, SNMP, or CLI, eliminating the need for a separate aggregation switch in mid-sized deployments. Internally, the switch combines a managed switching ASIC with multiple PoE PSE controllers that perform IEEE 802.3bt handshake, inrush current limiting, and per-port load-disconnect on overload. The 480 W PoE budget is provided by an internal AC-DC converter inside the same chassis, so only a single mains connection is required. Typical applications include digital-ceiling PoE lighting retrofits, enterprise wireless AP backhauls, IP-surveillance camera aggregation, smart-building sensor networks, and hospitality PoE deployments. For facilities managers replacing legacy 30 W PoE+ switches, the 90 W per-port capability is the principal upgrade driver because it supports higher-power luminaires and emerging IEEE 802.3bt PDs that older switches cannot power. A key design tip: budget total PoE load to 80 percent of the 480 W nameplate (about 384 W) to maintain headroom for inrush and Class-8 PD startup spikes on cold power-up.
PEM3024C - 30W PoE+ PD Module, 24V Output | Infomart
The Infomart IT Solutions PEM3024C is a 30W Power over Ethernet Plus (PoE+) Powered Device (PD) module with a 24V isolated output, providing complete compliance with the high-power IEEE 802.3at PoE+ standard while remaining backward-compatible with IEEE 802.3af (PoE) power sourcing equipment. The module extracts power directly from a CAT5 Ethernet cable and is packaged as a compact 14-pin board-mount module. A PoE powered-device module is a type of power extraction and conversion module within the power-over-Ethernet hierarchy: IEEE 802.3at PoE+ system -> powered device (PD) interface -> DC-DC power module -> end equipment. Its role is to perform PD detection, classification, inrush current limiting, and isolation, presenting a regulated DC rail to the host system without any local AC power input. Key features of the PEM3024C include complete IEEE 802.3at compliance for 30W Class 4 power delivery, operation from both PoE+ (802.3at) and PoE (802.3af) PSE sources, a 24V DC output rail suitable for industrial and telemetry electronics, and a 14-pin module footprint that simplifies integration compared to discrete PD controller plus transformer designs. Technically, the module integrates the PD interface physical layer, including the detection and classification signature required by the IEEE 802.3at standard, together with an isolated flyback-style conversion stage that delivers a regulated 24V output at up to 30W. This integration reduces design time and BOM count for Ethernet-powered end nodes. Typical applications cited by distributors include home automation, remote sensors, security and surveillance equipment, telemetry systems, and wireless connectivity nodes - all scenarios where running power over the existing Ethernet drop is more economical than local mains wiring. A key design consideration is thermal management: at full 30W extraction, the module dissipates heat through its PCB mounting, so adequate copper area and airflow around the module are recommended. Verify input cabling is genuine CAT5 or better to minimize DC resistance losses on the power pairs. This page synthesizes distributor availability data, compliance notes, and practical application guidance not found in a single datasheet, providing engineers with consolidated selection information for the PEM3024C PoE+ PD module.
PF9453 - PMIC for i.MX 91/93, 4 Bucks + 3 LDOs | NXP
The NXP Semiconductors PF9453 is a single-chip Power Management IC (PMIC) purpose-built for the i.MX 91 and i.MX 93 application processors, integrating four high-efficiency step-down (buck) regulators, three LDOs (including a low-Iq SNVS LDO), one 400 mA load switch, and a 32.768 kHz crystal oscillator in a compact 40-pin HVQFN (5x5 mm) package. It targets IoT, smart appliance, industrial, and portable applications where board space and power efficiency are critical. A PMIC (Power Management IC) is an integrated power-management solution that consolidates multiple voltage regulators, switches, and supervisory functions into one device. In the power-supply hierarchy, a processor PMIC sits above discrete DC-DC converters and LDOs, providing complete, sequenced multi-rail power for an SoC and its peripherals from a single input supply, reducing bill-of-materials count, board area, and bring-up complexity. Key features include four high-efficiency, low-quiescent-current buck regulators that generate the core, SoC, DDR, and I/O rails required by i.MX 91/i.MX 93 processors; two general-purpose LDO regulators (one LDO in WLCSP-package variants) plus a low-Iq SNVS LDO that keeps real-time and always-on domains alive during low-power modes; a 400 mA integrated load switch for peripheral power control; and an onboard 32.768 kHz crystal oscillator for the RTC clock domain. The PF9453 is configured and monitored over an I2C interface supporting standard-mode (100 kbit/s), fast-mode (400 kbit/s), and fast-mode plus (1 Mbit/s) transfers, per the I2C-bus specification described in NXP application document UM10204. Programmable regulators allow rail voltages, sequencing, and ramp rates to match the exact i.MX 91/i.MX 93 power-up requirements, with interrupt and status reporting for system supervision. Typical applications include i.MX 91 and i.MX 93 single-board computers, industrial gateways and HMI panels, smart appliances, battery-powered portable devices, and space-constrained IoT edge nodes where a single-chip power tree replaces a dozen discrete regulators. When designing with the PF9453, follow the NXP-recommended i.MX 91/i.MX 93 power sequencing tables in the datasheet: rail sequencing, default I2C register settings, and buck inductor selection directly affect startup reliability and low-power-mode transition behavior. This page adds value beyond the manufacturer datasheet by synthesizing drop-in alternative analysis, pricing tiers, application guidance, and design notes in one engineer-focused reference.
PI3301-00-LGIZ - 36V/10A ZVS Buck SiP Regulator | Vicor
The Vicor PI3301-00-LGIZ is a 36V-input, 3.3V-output, 10A-output ZVS (Zero-Voltage-Switching) buck switching regulator IC integrating the controller, power switches, and all support components inside a high-density 123-BLGA System-in-Package (SiP) module. According to the Vicor manufacturer datasheet, the PI33xx family operates from 8V to 36V input and sustains a fixed/adjustable output range around 2.3V (3.3V nominal) at up to 10A continuous load. The ZVS architecture minimizes switching losses, enabling high-frequency operation that reduces external filter size and maximizes power density for point-of-load DC-DC regulation. A ZVS buck regulator is a synchronous step-down (buck) DC-DC converter topology in which the high-side MOSFET is turned on only when its drain-to-source voltage has fallen to zero, eliminating the overlap of voltage and current during switching transitions. Compared with hard-switched buck regulators, ZVS operation cuts switching losses, lowers EMI, and enables very high switching frequencies (the PI33xx maintains ZVS across the full rated load). Within the broader power conversion hierarchy, the PI3301 sits between discrete buck controllers (e.g. VICOR Chipset PI31xx + PI33xx) and finished PoL modules - it is a System-in-Package that combines magnetics, drivers, and silicon into one reflowable land-grid-array footprint. Key features include 10A continuous output current, 8V to 36V wide input range, a fixed 3.3V output (also adjustable down to 2.3V), and high efficiency across the operating envelope. The 123-BLGA LGA surface-mount package provides a low-profile, lead-free land-grid-array footprint suitable for reflow assembly on standard PCB substrates. Operating junction temperature spans -40C to +125C, allowing deployment in industrial and harsh-environment applications including automotive, industrial automation, and distributed 24V/28V intermediate bus systems. Typical applications include point-of-load regulation from a 24V industrial bus, 28V military/aerospace intermediate bus conversion, telecom/datacom board-level power, and high-density brick-replacement designs. The PI3301-00-LGIZ is also well-suited to fan-out supply stages driving downstream LDO regulators or downstream Vicor ratios in factorized-power architectures, where the ZVS Buck provides a clean 3.3V intermediate rail. When designing with this device, pay attention to the BLGA land pattern and follow Vicor reflow profile recommendations. Use the recommended input bulk capacitance to suppress ripple, and respect the PG/SET/EN signal interface for sequencing. Adequate PCB copper spread beneath the LGA lands is required to dissipate conduction losses and maintain junction temperature within the -40C to +125C range. This page synthesizes distributor stock, official Vicor technical specifications, and cross-reference notes not present in the standalone datasheet, providing a single-citation summary engineers can use during component selection, second-sourcing, and design reviews.
PI3301-01-LGIZ - 36V/15A ZVS Buck Regulator | Vicor
The Vicor PI3301-01-LGIZ is a 36V-input, 15A-output Cool-Power ZVS buck regulator integrating the controller, power switches, and support components inside a high-density 123-pin LGA System-in-Package (SiP). It accepts an input range of 8V to 36V and produces a fixed 3.3V output (with 2.3V to 4.1V adjustability), delivering up to 15A continuous load current at switching frequencies up to 650 kHz. A buck regulator (step-down switching regulator) is a type of DC-DC converter that produces a lower, regulated output voltage from a higher input voltage rail. Within the broader power management hierarchy, it sits as a switching voltage regulator under DC-DC converters, which are themselves a subclass of power management ICs (PMICs). Vicor's Cool-Power ZVS (Zero-Voltage Switching) topology belongs to this family and is engineered to maximize efficiency at high switching frequencies by ensuring the high-side MOSFET turns on only when its drain-to-source voltage is approximately zero, eliminating most of the switching losses that normally limit high-frequency operation. Key specifications include 8V to 36V input range, 3.3V nominal output (2.3V to 4.1V adjustable), 15A continuous output current, 650 kHz maximum switching frequency, and a 14 mm x 10 mm LGA-123 surface-mount footprint. Efficiency typically exceeds 90% across most of the load range, and the integrated SiP construction removes the need for an external MOSFET, gate driver, or bootstrap network. The ZVS architecture enables high-frequency operation that shrinks the output LC filter, improves transient response to load steps, and sustains high efficiency up to the rated input. The internal control loop, soft-start, and current-limit circuitry are all co-packaged with the power stage, allowing designers to drop the part onto a board with only input/output capacitors and a few small feedback components. Typical applications include 24V industrial bus point-of-load regulation, telecom and networking equipment, distributed power architectures, FPGA/DSP/processor core supplies, and high-current LED or motor-driver rails generation. The wide 8V-36V input range covers nominal 12V and 24V rails with substantial transient margin. When designing with the PI3301-01-LGIZ, follow Vicor's recommended PCB land pattern and thermal via array under the LGA to keep the SiP junction within its rated temperature. Use the PI33xx evaluation board layout as a starting point, and respect the minimum input/output capacitance values specified in the datasheet to maintain control-loop stability. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single manufacturer product page.
PI3302-00-LGIZ - 36V ZVS Buck SiP 10A 5Vout | Vicor
The Vicor PI3302-00-LGIZ is a 36V-input, 5V-output, 10A Zero-Voltage Switching (ZVS) buck regulator integrated into a 123-pin Land-Grid-Array (LGA) System-in-Package (SiP). It accepts an 8V to 36V input range, delivers a factory-set 5V output (adjustable down to 3.3V) at up to 10A continuous load, and operates at a nominal 1 MHz switching frequency with ZVS topology for best-in-class power efficiency. According to the Vicor ds_pi3302-00 datasheet, this part belongs to the Picor Cool-Power PI33xx-x0 family of high-density, wide-input-range DC-DC ZVS buck regulators. A ZVS buck regulator is a high-efficiency switched-mode DC-DC converter that switches its high-side MOSFET at the moment the switch-node voltage has fallen to zero, eliminating switching losses and enabling very high switching frequencies with excellent efficiency. ZVS regulators sit inside the broader class of switched-mode power supplies (SMPS), which also includes hard-switched buck, boost, and flyback converters; the PI33xx family uses a proprietary ZVS architecture to deliver flat efficiency above 94% across much of the load range. By integrating the controller, power switches, and support components inside a single high-density System-in-Package, Vicor eliminates the parasitic inductance and layout complexity of discrete buck designs, producing a compact, repeatable point-of-load (PoL) module that engineers can place directly next to the load. Key differentiating features of the PI3302-00-LGIZ include: 10A continuous output current from a single SiP, 8V-36V input range that covers 12V and 24V industrial buses, factory-set 5V output with internal resistor divider to 3.3V option, and a 1 MHz nominal switching frequency that allows small external LC filters. The device supports synchronization to an external clock via SYNCI/SYNCO pins (the PI3302-00 default synchronizes to the falling edge, providing 180 degrees phase shift from SYNCO to enable two-device paralleling without external clock circuitry). It also offers over-current, over-voltage, over-temperature, and input under-voltage protections. Technically, the PI3302-00-LGIZ integrates a high-performance ZVS controller, MOSFET power stage, and inductor on a single substrate inside a 10 mm x 10 mm x 2.5 mm LGA. Because the power loop is contained inside the SiP, peak efficiency reaches the mid-90% region and the part is qualified for -40C to +125C junction temperature operation. The 1 MHz switching frequency allows small external capacitors and inductors for filtering, while ZVS operation dramatically reduces EMI and switching noise relative to conventional buck regulators. Typical applications include 12V/24V industrial point-of-load regulation, distributed power architectures in telecom and networking equipment, fan-out from a 24V or 28V bus to 5V logic rails, test-and-measurement instrumentation, and embedded computing where high efficiency and small board area are mandatory. When designing with this device, place the required input bulk and ceramic X5R capacitors close to the SiP per the datasheet, observe the recommended ground plane pattern, and ensure thermal copper area is sufficient for the worst-case VIN-to-VOUT drop at full load. Two PI3302-00 devices can be paralleled for 20A using the SYNCI/SYNCO pins without additional clock circuitry. This page synthesizes current distributor pricing and stock, drop-in same-family alternatives, and practical design notes not duplicated in the manufacturer datasheet.
PI3305-00-LGIZ - 8A ZVS Buck SiP 8-36Vin to 15Vout | Vicor
The Vicor PI3305-00-LGIZ is a high-efficiency, wide-input-range 8 A ZVS Buck switching regulator from the PI33xx family, integrating the controller, power switches, and all supporting passive components inside a single 14 mm x 10 mm x 2.56 mm System-in-Package (SiP) LGA-123 module. It accepts a nominal 24 V input (8 V to 36 V range) and delivers a fixed 15 V output (with an adjustable range including 10 V) at up to 8 A continuous load, achieving peak efficiencies above 95 percent through Vicor's proprietary Zero-Voltage Switching topology that minimizes switching losses and EMI. A ZVS Buck regulator is a non-isolated synchronous step-down (buck) DC-DC converter that uses Zero-Voltage Switching - a soft-switching topology in which the high-side MOSFET is turned ON only when its drain-to-source voltage has already fallen to (or near) zero. This eliminates the capacitive turn-on loss that plagues hard-switched buck converters, enabling higher switching frequency, smaller magnetics, lower EMI, and peak efficiencies in the 95-98% range. In the broader hierarchy, a ZVS Buck belongs to switching regulators -> DC-DC converters -> power management ICs -> semiconductor devices, sitting in the same functional category as POL (point-of-load) converters for distributed-architecture power systems. Key differentiating features include the 123-ball LGA SiP footprint that compresses an entire POL regulator into roughly 1.4 cm^2 of board area, internal current-mode control with fast transient response, and the wide 8 V-36 V input range that allows direct operation from 12 V, 24 V industrial, or 28 V aerospace buses without pre-regulation. The part uses a coupled-inductor topology with the inductor built into the substrate, so designers add only input/output capacitors and a few small-signal components to complete a fully regulated 15 V rail. The PI3305-00-LGIZ is qualified for operation across -40 degrees C to +125 degrees C, with thermal management primarily achieved through PCB copper area under the exposed die-side balls. Typical applications include 24 V industrial automation rails, telecommunications point-of-load conversion, distributed POL architectures, fan and motor driver supplies, and aerospace/defense 28 V bus regulation where high power density is at a premium. Designers should note that PI33xx variants differ mainly by output voltage setpoint (PI3305-00 = 15 V, PI3305-20 = lower-voltage variants); a single board footprint cannot accept arbitrary re-programming, so the output setpoint is fixed at ordering time. Adequate decoupling on both input and output - typically 4.7 uF to 22 uF ceramic plus bulk capacitance - is essential to maintain ZVS behavior under dynamic load steps.
PI3323-00-LGIZ - 22A ZVS Buck Regulator, 42Vin 3.3Vout | Vicor
The Vicor PI3323-00-LGIZ is a high-efficiency 22 A ZVS Buck regulator (buck switching regulator IC) with a fixed 3.3 V output, packaged as a 110-BLGA module measuring 14 mm x 10 mm. Part of the PI33xx ZVS Buck regulator family, it operates across a wide 14 V to 42 V input range and delivers up to 22 A continuous output current. The device integrates the controller, power switches, and support components inside a System-in-Package (SiP), enabling very high power density in a compact, low-profile surface-mount footprint. What is a ZVS buck regulator? ZVS (Zero-Voltage Switching) is a soft-switching topology that forces the MOSFETs to switch only when the drain-to-source voltage is approximately zero. This dramatically reduces switching losses and EMI compared to conventional hard-switched buck converters, allowing the regulator to run at high switching frequencies without sacrificing efficiency. A buck regulator itself is a step-down DC-DC converter that produces a lower output voltage from a higher input rail; these converters belong to the broader family of switched-mode power supplies and power management ICs. Key features of the PI3323-00-LGIZ include the wide 14 V-42 V input range, the fixed 3.3 V output with 22 A current capability, and a high switching frequency that lets the user keep the output filter small. The integrated SiP layout removes the need for an external MOSFET bridge and bootstrap circuitry, simplifying layout, reducing BOM count, and accelerating time-to-market. The 110-BLGA module is reflow-solderable and mounts on standard PCB assembly lines. Typical applications for this part include 48 V-input telecom rails stepping down to a 3.3 V point-of-load, industrial 24 V-36 V bus systems feeding FPGAs, ASICs, and high-current logic, server and embedded-computing intermediate bus conversion, and high-current test and measurement loads. The combination of high power density and high efficiency makes it attractive where board area and thermal budget are tight. When designing with the PI3323-00-LGIZ, follow the manufacturer's layout guidance for the input/output capacitors and the thermal land pattern. The wide input range (down to 14 V) requires adequate input capacitance to handle transient bus events, and the 22 A output stage needs sufficient PCB copper or forced-air cooling to keep the module within its rated temperature window. This page consolidates distributor pricing, cross-references to other PI33xx output-voltage variants, and practical design notes sourced from the Vicor datasheet to help engineers select the right part for high-current 3.3 V point-of-load applications.
PI3525-00-LGIG - 48V Input 5V/20A ZVS Buck Regulator | Vicor
The Vicor PI3525-00-LGIG is a 48V-input, 5V/20A output ZVS buck regulator housed in a high-density 110-pin BLGA surface-mount module (14 mm x 10 mm). It operates over a 30V to 60V input range, delivers a fixed 5.0V output at up to 20A continuous load current, and uses Vicor's proprietary ZVS (Zero-Voltage Switching) buck topology to achieve high step-down efficiency and low switching losses. Per the datasheet, the PI3525-00-LGIG part-number suffix "-LGIG" denotes a tray-packaged industrial-grade (-40C to +125C) variant of the PI3525-00 platform. What is a ZVS buck regulator? A ZVS buck regulator is a high-frequency switched-mode DC/DC converter that uses zero-voltage switching - the high-side FET is turned on only after its drain-to-source voltage has fallen to approximately 0V - to minimize switching losses and EMI. ZVS buck regulators sit in the hierarchy: synchronous buck regulator -> step-down DC/DC converter -> DC/DC switching regulator -> power management IC. Vicor's Cool-Power ZVS portfolio targets point-of-load applications where high density and efficiency are required, in a footprint far smaller than discrete buck designs. Key features of the PI3525-00-LGIG include 20A continuous output current, 30V to 60V input operating range, fixed 5.0V output (no external feedback resistors), internal synchronous rectification, and a high switching frequency that enables a small output inductor footprint. The 110-BLGA module integrates the controller, FETs, inductor and key passives, reducing the external BOM to input/output capacitors and a few configuration resistors. Architecture-wise, the PI3525-00-LGIG uses a ZVS buck topology with adaptive dead-time control, current-mode control for fast transient response, and internal protection including over-current, over-temperature, and input under-voltage lockout. According to Vicor, the Cool-Power ZVS family delivers efficiency exceeding 90% in many point-of-load rails, and the integrated LGA package removes parasitic layout losses normally seen in discrete buck converters. Typical applications include 48V telecommunications and networking equipment, intermediate bus converters feeding downstream point-of-load regulators, industrial automation with 48V or 60V distributed power, and high-current ASIC/FPGA rails in datacom and AI compute hardware. The 5V/20A output is well suited to powering memory banks, MCUs, and serializer/deserializer (SerDes) PHYs that require tight regulation from a higher-voltage distribution bus. When designing with this part, follow Vicor's reference PCB layout recommendations strictly - the LGA land pattern, thermal vias, and input/output capacitor placement are critical to achieving rated efficiency and thermal performance. Use the recommended X7R or X5R ceramic capacitors on input and output to handle the ripple current, and ensure the ground return plane is unbroken beneath the module to minimize switching noise coupling. This page synthesizes distributor pricing (as of 2026-10-14), drop-in compatible alternatives within the Vicor Cool-Power ZVS family, and practical design notes that complement the official Vicor datasheet to help engineers evaluate the PI3525-00-LGIG for 48V point-of-load conversion.
PI3525-01-LGIZ - 48V to 5V/20A ZVS Buck Regulator SiP | Vicor
The Vicor PI3525-01-LGIZ is a 20 A step-down ZVS (Zero-Voltage-Switching) buck regulator from the PI33xx family, integrating the controller, power switches, and support passives inside a high-density 110-pin LGA/BGA System-in-Package (SiP). It accepts a wide 36 V to 60 V input range and produces an adjustable output (factory-trimmed around 5 V on the -01 variant) at up to 20 A continuous load. According to the Vicor ZVS buck datasheet, the topology uses zero-voltage switching to push typical efficiency above 96% while keeping the switching node free of body-diode losses. A ZVS buck regulator is a non-isolated, hard-switched synchronous step-down DC-DC converter whose high-side and low-side MOSFETs transition only when the switching-node voltage is at or near 0 V. This eliminates switching losses in the high-frequency domain and dramatically reduces EMI harmonics compared with conventional PWM buck converters. The ZVS buck sits inside the broader hierarchy: buck converter -> DC-DC switching regulator -> non-isolated POL converter -> power management IC. Vicor's PI33xx/PI35xx family are surface-mount SiPs designed for distributed power architectures where 48 V is stepped down locally at the point-of-load. Key parametric features of the PI3525-01-LGIZ include 20 A continuous output current, 36-60 V input, programmable output (around 5 V for the -01 variant), >96% peak efficiency, parallel single-wire current sharing for higher-power rails, and over-current, over-temperature, and over-voltage protection. The 110-BLGA SiP footprint exposes a thermal pad that conducts heat directly into the PCB copper pours, eliminating the need for an external heatsink in properly laid-out boards. Typical applications include 48 V telecom and datacom point-of-load conversion, industrial 48 V battery-fed motor and sensor rails, and high-current FPGA/DSP/processor core supplies where the upstream 48 V bus already exists. The -00/-01/-02 variants differ in factory output trim (5 V/12 V/15 V nominal respectively), allowing the same PCB layout to address multiple rails. When designing with the PI3525-01-LGIZ, observe Vicor's recommended PCB layout (LGA land pattern, thermal via array under the package, and 4-layer board minimum with continuous inner copper planes). Use the TR pin to enable single-wire current sharing between paralleled units; route the share trace as a short, noise-immune differential pair to avoid ground-loop coupling. This page synthesizes distributor pricing from DigiKey and Mouser, plus drop-in Vicor-family alternatives (PI3525-00-LGIZ, PI3526/PI3545 variants) that share the same 110-BLGA SiP footprint, offering a single-perspective view not assembled in the manufacturer datasheet alone.
PI3542-00-LGIZ - 48V ZVS Buck Regulator, 2.5V/10A | Vicor
The Vicor PI3542-00-LGIZ is a 48V-input, 2.5V-output, 10A ZVS (Zero-Voltage Switching) buck regulator integrated into a high-density 85-pin BGA System-in-Package (SiP). It delivers up to 10A continuous output current from a wide 36V to 60V input range, with a fixed/adjustable 2.2V (2.5V nominal) output, switching at a high frequency to minimize external component footprint. What is a ZVS buck regulator? A ZVS (Zero-Voltage Switching) buck regulator is a type of synchronous step-down (buck) DC-DC converter topology that switches the high-side MOSFET when the drain-source voltage is approximately zero, eliminating switching losses in the hard-switching transition. This topology belongs to the soft-switching DC-DC converter family and is widely used in high-input-voltage, high-density point-of-load applications where efficiency, thermal performance, and small PCB area are critical. Key features include: peak efficiency above 95% across the load range, parallel operation with current sharing, internal MOSFET power switches and inductor, integrated controller, and over-current/over-temperature protection. The PI3542-00-LGIZ integrates controller, power switches, and support components all within the SiP, eliminating the need for an external power inductor. Typical applications include 48V direct-to-point-of-load conversion in telecom, datacom, industrial, and high-end computing systems where a 12V intermediate bus is bypassed. The wide 36V-60V input range also supports nominal 48V telecom rails, industrial battery systems, and distributed power architectures. When designing with this device, follow Vicor's PCB layout guidelines for the LGA SiP land pattern and thermal management. Maintain at least 6A continuous airflow over the package, or use a heatsink, to ensure reliable operation. The PI3542-00-LGIZ is part of the PI354x-00 family sharing the same footprint for different output voltages. This page synthesizes distributor pricing, drop-in same-package family variants, and practical design notes not found in the manufacturer datasheet.
PI3543-00-LGIZ - 10A 60V ZVS Buck SiP Regulator | Vicor
The Vicor PI3543-00-LGIZ is a 10 A ZVS (Zero-Voltage-Switching) buck DC-DC regulator integrating the controller, power switches, and support components inside a high-density 85-pin BLGA System-in-Package (SiP) measuring 10 mm x 10 mm. It accepts a wide 36 V to 60 V input range and produces an adjustable output that defaults to a fixed 3.3 V (with adjustment down to 2.6 V), delivering up to 10 A of continuous load current at high efficiency. The Cool-Power ZVS topology minimises switching losses and eliminates high-frequency ringing, enabling high step-down ratios without the efficiency penalty typical of hard-switched buck converters. A buck regulator (step-down switching converter) is a switched-mode power supply topology that converts a higher DC input voltage to a lower DC output voltage using an inductor, a switch, and synchronous rectification. ZVS (Zero-Voltage-Switching) is a soft-switching technique where the MOSFET is turned on only when the drain-to-source voltage has reached zero, dramatically reducing switching losses and EMI. The buck regulator sits within the power-management IC hierarchy: switching regulator > DC-DC converter > power management IC > semiconductor. Key features include an industry-leading power density for the 10 A class (>200 W/in³ in the SiP), high efficiency across line and load, an enable pin for power sequencing, and monotonic startup into pre-biased loads. The integration removes the need for an external MOSFET selection, gate drivers, and most support passives, simplifying design-in and reducing PCB area. Built-in protection features include over-current, over-temperature, over-voltage, and under-voltage lockout. Typical applications include 48 V telecom point-of-load conversion, industrial 48 V bus rails, distributed power architectures feeding downstream POL converters, LED driver current sources, and high-current point-of-load rails for FPGAs, ASICs, and processors in computing and communications equipment. The wide 36 V-60 V input range tolerates transients on 48 V backplanes and telecom battery plants. When designing with the PI3543-00-LGIZ, follow Vicor's land-pattern and thermal recommendations precisely: the SiP exposes a large thermal pad that requires adequate copper area to keep junction temperature within ratings. Note that the LGIZ package uses land-grid-array solder bumps and is NOT pin-compatible with non-Vicor DC-DC modules – any alternative must come from the Vicor PI354x family. Always confirm loop stability with the recommended output LC network and respect the derating curves in the datasheet. This page synthesises distributor pricing, family-internal cross references, and practical layout notes for engineers selecting the PI3543-00-LGIZ in 48 V distributed-power designs.
PI3751-01-LGIZ - 60V 200W ZVS Buck-Boost | Vicor
The Vicor PI3751-01-LGIZ is a high-efficiency, wide-input-range DC-DC Zero-Voltage Switching (ZVS) Buck-Boost regulator integrating the controller, power switches and support components inside a high-density Land-Grid-Array (LGIZ) System-in-Package. The device accepts an input range of 38 V to 60 V and delivers up to 200 W of output power to point-of-load circuits in computing, telecom and industrial systems. The integration of ZVS topology enables high-frequency switching with minimized losses, which in turn reduces the size of external filtering components, raises power density and delivers very fast dynamic response to line and load transients. A ZVS buck-boost regulator is a non-isolated switching converter that steps an input bus voltage either up or down while maintaining zero-voltage switching across the high-side MOSFET transitions. Within the broader power-conversion hierarchy it sits between the input bus (typically 48 V telecom or 54 V distributed-architecture rails) and downstream point-of-load converters, feeding lower-voltage rails for ASICs, FPGAs and processor cores. The ZVS technique is a resonant soft-switching method that eliminates the capacitive turn-on loss of conventional hard-switched PWM regulators, allowing higher switching frequency, lower EMI and dramatically improved efficiency at elevated input voltages. The headline features of the PI3751-01-LGIZ include up to 96% peak efficiency, a switching frequency of approximately 1 MHz, sub-millisecond transient response, and a junction-to-ambient thermal resistance suitable for forced-air cooled enclosures. The buck-boost topology permits output voltages both above and below the input rail, which makes the module ideal for systems that operate from loosely regulated 48 V backplanes. Internal protection features include over-current, over-temperature, over-voltage and input under-voltage lockout. The LGIZ surface-mount package exposes the bottom-side power and ground pads for direct PCB attachment, removing the need for through-hole power leads. Typical applications include 48 V point-of-load conversion for AI accelerator cards, telecom base-station power modules, industrial automation controllers and high-reliability computing boards. When designing with the PI3751-01-LGIZ, follow Vicor's reference PCB layout closely, place input/output ceramic capacitors immediately adjacent to the LGIZ landing pads, and provide adequate copper area for thermal spreading - the module can dissipate tens of watts under full-load buck operation. This page consolidates drop-in alternatives and application patterns that are not contained within the Vicor datasheet alone.
PI3751-02-LGIZ - 60V 240W ZVS Buck-Boost Regulator | Vicor
The Vicor PI3751-02-LGIZ is a high-efficiency, wide-input-range 240 W DC-DC ZVS (Zero-Voltage Switching) Buck-Boost regulator module integrating controller, power switches, and support components into a single high-density LGA SiP (System-in-Package). It accepts a 38 V to 60 V input range and is optimized for 48 V nominal distribution rails common in telecom, datacom, and industrial automation systems. The proprietary ZVS topology enables high-frequency switching with minimal switching losses, raising point-of-load power conversion efficiency well above conventional hard-switched buck-boost converters. What is a ZVS buck-boost regulator? A ZVS (Zero-Voltage Switching) buck-boost regulator is a switched-mode DC-DC topology which can both step down (buck) and step up (boost) its input voltage while maintaining a regulated output. ZVS means the power switches transition when the voltage across them is approximately zero, which dramatically reduces switching losses and EMI compared to hard-switched PWM converters. ZVS buck-boost regulators sit within the broader category hierarchy: DC-DC converter -> buck-boost converter -> ZVS regulator -> power management IC -> semiconductor. They are used when input voltage may swing above or below the desired output and high efficiency at high switching frequency is mandatory. The PI3751-02-LGIZ delivers up to 240 W of output power from a compact surface-mount module, providing best-in-class power density for its power level. Its integrated ZVS topology allows high switching frequency operation with reduced EMI emissions, simplifying both input and output filtering requirements. The regulator supports adjustable output voltage configuration, enabling designers to set the rail voltage for downstream point-of-load converters, ASICs, or directly to system loads. Typical applications include 48 V telecom and datacom point-of-load conversion, industrial 48 V bus regulation, high-performance computing and AI accelerator auxiliary rails, battery-backed 48 V systems, and LED driver power stages. The wide 38 V to 60 V input range makes it tolerant of transient drops on 48 V distribution buses, while the buck-boost capability allows a regulated output even when the input sags below or rises above the output setpoint. When designing with this module, follow Vicor's layout and thermal guidance in the datasheet. Use the recommended input and output capacitance, observe the LGA land pattern and reflow profile, and ensure sufficient PCB copper area or forced airflow to keep the module within its thermal limits. Avoid paralleling multiple PI3751-02 modules without consulting Vicor application notes, since current sharing requires external circuitry.
PI3753-50-LGIZ - 50V ZVS Buck-Boost Regulator | Vicor
The Vicor PI3753-50-LGIZ is a high-efficiency, wide-input-range DC-DC ZVS Buck-Boost switching regulator that delivers up to 50V output voltage in a compact LGA surface-mount package, integrating the controller, power switches, and support components into a single high-density module. It is part of Vicor's Picor PI3753 family of ZVS buck-boost regulators designed for point-of-load and distributed power architectures. Key specifications include a wide operating input range up to 50V, high switching frequency with ZVS (zero-voltage switching) topology, and integrated power MOSFETs that eliminate the need for external switches. A ZVS buck-boost regulator is a type of DC-DC switching converter that uses zero-voltage switching to minimize switching losses and electromagnetic interference. It can step the input voltage up or down (buck-boost topology), making it suitable for systems where the input rail varies above and below the required output. Within the broader power converter hierarchy, ZVS buck-boost regulators sit between traditional hard-switched buck converters and isolated DC-DC modules, offering higher efficiency than PWM regulators while supporting bidirectional voltage conversion. Key features include ZVS switching for high efficiency across the load range, integrated controller + power switches + passive support components, wide input voltage operation, small LGA land-grid-array package for high power density, and minimal external component count. The integrated topology allows designers to achieve power conversion with only input/output capacitors and feedback components external to the module. The PI3753 architecture uses Vicor's proprietary ZVS topology with adaptive dead-time control, achieving soft-switching across the operating range. This topology reduces switching losses compared to traditional hard-switched buck/boost converters and enables high-frequency operation, which shrinks the required inductor and capacitor energy storage. Integrated power MOSFETs and the controller reduce loop-area parasitics and improve transient response. Typical applications include distributed power architectures, point-of-load regulation, telecom and networking equipment, industrial automation systems, battery-powered portable devices, and high-density computing platforms. The wide input range makes the part well-suited for 24V industrial buses and 48V telecom rails where the input may vary significantly. When designing with this part, ensure that the input and output capacitors meet the datasheet ESR and ripple-current ratings; insufficient decoupling can cause instability. Adequate thermal management is also critical - although the module integrates the switches, total power dissipation scales with (VIN - VOUT) * IOUT at low VIN, so thermal copper must be sized accordingly. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet to help engineers evaluate and apply the PI3753-50-LGIZ quickly.
PI3754-00-LGIZ - Wide-Input ZVS Buck Regulator SiP | Vicor
The Vicor PI3754-00-LGIZ is a high-efficiency, wide-input-range DC-DC ZVS (Zero-Voltage Switching) Buck regulator integrated as a System-in-Package (SiP). It combines a ZVS controller, power MOSFET switches, and supporting passive components into a single surface-mount LGA module, delivering up to 60 W of output power with best-in-class efficiency for point-of-load applications. The part number suffix "LGIZ" denotes the land-grid-array LGA package variant supplied in tape and reel for high-volume assembly. A buck regulator is a switched-mode DC-DC converter that steps a higher DC input voltage down to a lower regulated DC output voltage. Buck regulators sit within the broader power-management hierarchy: switching regulator -> DC-DC converter -> power management IC -> semiconductor. ZVS (Zero-Voltage Switching) is a soft-switching technique that switches the high-side MOSFET when its drain-to-source voltage is approximately zero volts, dramatically reducing switching losses and EMI compared with hard-switched PWM converters. The PI3740/PI3754 family uses this ZVS topology to deliver high efficiency across the entire load range. Key features include a wide 8 V to 60 V input voltage range, a 24 V nominal output that can be adjusted downward with an external resistor divider, switching frequencies in the MHz range for small passive components, and parallel capability with single-wire current sharing for higher-power rails. The SiP integration eliminates parasitic inductance between the controller and the power FETs, allowing clean switching edges and reducing PCB real-estate. The LGA module also exposes the thermal pad to internal copper heat-spreading, supporting high continuous power without external heatsinks in many applications. Typical applications include 48 V telecom point-of-load conversion, industrial 24 V bus regulation, battery-powered equipment requiring a regulated intermediate rail, and distributed power architectures where high-density SiPs simplify board layout. Compared with discrete buck designs, the PI3740/PI3754 family reduces BOM count, shrinks solution size, and shortens design time. When designing with the PI3754-00-LGIZ, follow Vicor's recommended analog / power / ground layout partitioning from the datasheet to maintain noise isolation between the sensitive analog feedback path and the high-di/dt power loop. Decouple the input with low-ESL/ESR ceramic capacitors placed as close as possible to the VIN pins, and respect the minimum output capacitance specified for control-loop stability. This page synthesizes distributor pricing, drop-in Vicor-family alternatives, and practical layout guidance not all collected in one place on the manufacturer datasheet, giving engineers a faster path from selection to prototype.
PI3755-01-LGIZ - 38-60V ZVS Buck-Boost 160W | Vicor
The Vicor PI3755-01-LGIZ is a high-efficiency, wide-input-range 160 W ZVS Buck-Boost regulator housed in a 71-pin LGA (LGA-71) System-in-Package (SiP) that integrates the controller, power switches, and most support components into a single high-density module. Operating from 38 V to 60 V input, it delivers a 124.2 W regulated output in a buck-boost topology and is rated for a continuous power of 160 W. The module requires only an external inductor and a minimal number of ceramic capacitors to complete a switching-mode buck-boost regulator, dramatically reducing external BOM size and engineering effort. A buck-boost regulator is a non-isolated DC-DC converter that can step an input voltage either up (boost) or down (buck) to produce a regulated output that may sit above, below, or equal to the input rail. Within the broader hierarchy of DC-DC converters -> switching regulators -> power management ICs (PMICs) -> semiconductors, the PI3755-01 sits alongside Vicor's larger family of ZVS buck, boost, and buck-boost regulators designed for point-of-load and intermediate bus conversion in distributed power architectures. Key features include Vicor's proprietary Zero-Voltage Switching (ZVS) architecture, which enables high-frequency operation while minimizing switching losses and maximizing efficiency. The ZVS topology sustains high switching frequency up to the rated input voltage, reduces the size of external filtering components, improves power density, and enables very fast dynamic response to line and load transients. Compared with conventional hard-switched converters, the soft-switching behavior of the PI3755-01 keeps switching-related EMI lower and efficiency higher across the operating range. The PI3755-01 is part of the PI37xx Cool-Power ZVS regulator family, all of which use the same System-in-Package building blocks. The high integration, tight control loop, and high switching frequency make the part well-suited to applications that demand compact point-of-load conversion in telecom, industrial, and high-density computing environments where intermediate 48 V bus distribution is common and 12 V/24 V/36 V loads need efficient conversion. Typical applications include 48 V telecom intermediate bus conversion, industrial 48 V robotics and motor drives, high-end computing and graphics-card auxiliary rails, and distributed power architectures stepping 48 V down to 24 V or 12 V. Designers typically place the PI3755-01 directly at the load to take advantage of its high power density and fast transient response. A key design consideration is thermal management: although the SiP is highly integrated, dissipating up to ~36 W of loss at full 160 W load still requires a substantial PCB copper pour or heatsink to keep the LGA junction-to-ambient thermal resistance within the datasheet limits. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.
PI3755-02-LGIG - 38-60V 160W ZVS Buck-Boost Regulator | Vicor
The Vicor PI3755-02-LGIG is a high-efficiency, wide-input-range DC-DC ZVS (Zero-Voltage Switching) Buck-Boost switching regulator module rated for 160 W output power in a 71-ball LGA (10x10 mm) surface-mount package. It accepts a 38 V to 60 V input and delivers an adjustable positive output between 28 V (minimum fixed) and 54 V at up to 160 W, integrating the controller, power switches, and all support components into a single high-density Cool-Power module. The -LGIG industrial grade variant is rated for an operating temperature of -40 °C to 125 °C per the Vicor LGA product line convention. A ZVS Buck-Boost regulator is a member of the switched-mode power supply (SMPS) family that combines the topology of a synchronous buck (step-down) and synchronous boost (step-up) converter so the output voltage can sit above, below, or equal to the input without topology change. In the system hierarchy this part sits between a discrete DC-DC converter and a fully-integrated power module: it is fully self-contained, requiring only input/output capacitors and a feedback resistor divider, while still presenting the electrical interface of a switching regulator IC to the host PCB. Vicor's proprietary ZVS topology eliminates the hard-switching losses that limit conventional hard-switched converters at high frequency, enabling high efficiency across the 38-60 V telecom/datacom input range. Key features include 1.5 MHz switching frequency, an adjustable output up to 54 V, integrated MOSFET power stage, and built-in protection for over-current, over-temperature, and input under-voltage. The ZVS topology achieves best-in-class power efficiency for point-of-load applications and dramatically reduces switching-noise EMI compared to hard-switched alternatives. The Cool-Power LGA package provides a low-profile, surface-mount footprint compatible with standard reflow processes. Typical applications include 48 V telecom point-of-load regulation, distributed power architectures, industrial 48 V bus systems, LED signage and display drivers, and high-current downstream POL conversion from a 48 V or 54 V backplane. The wide input range makes it particularly suitable for nominal 48 V systems with tolerance excursions up to 60 V. When designing with this part, observe Vicor's recommended input capacitor ESR and PCB layout guidelines to maintain ZVS operation; poor layout can defeat the soft-switching benefit and degrade efficiency. Thermal design must account for the 10x10 mm LGA land pattern and any required thermal vias to internal copper pours. This page synthesizes distributor pricing, parametric drop-in alternatives from the Vicor Cool-Power family, and practical design notes not found in the manufacturer datasheet.
PI3756-00-LGIZ - 200W ZVS Buck-Boost DC-DC Regulator | Vicor
Vicor PI3756-00-LGIZ is a high-efficiency, wide-input-range DC-DC ZVS Buck-Boost switching regulator module rated for 200W output power. The part integrates a high-performance Zero-Voltage Switching (ZVS) controller with power switches and support components in a single high-density surface-mount package, operating from 38V to 60V input and delivering 28V to 60V output at up to 5A. It requires an external 5V bias on the VDR pin, an external inductor, a resistive feedback divider, and a small number of bypass capacitors to form a complete buck-boost converter. A buck-boost regulator is a switched-mode power conversion topology that produces an output voltage either above or below the input rail, allowing designers to power downstream loads from variable or intermediate bus voltages where neither a pure buck nor a pure boost could maintain regulation. Within the broader power conversion taxonomy, the PI3756-00 belongs to the ZVS Buck-Boost family of isolated/non-isolated point-of-load regulators, which itself sits below DC-DC switching regulators and the wider power management IC category. Vicor's Cool-Power ZVS portfolio targets high-density point-of-load applications where PCB area, efficiency, and thermal performance are simultaneously constrained. Key features of the PI3756-00-LGIZ include a wide 38V-60V input range, 28V-60V adjustable output range, 5A continuous output current capability, integrated ZVS topology for reduced EMI and high efficiency, and a small LGA surface-mount footprint suitable for high-density point-of-load designs. The integration of controller and power switches minimizes external component count, while the ZVS architecture minimizes switching losses and improves thermal performance across the operating range. Technically, the PI3756-00-LGIZ uses Vicor's proprietary ZVS topology to switch the power MOSFETs at zero voltage, dramatically reducing switching losses and allowing high-frequency operation. The integration of the high-side and low-side switches, the controller, and the support components on a single silicon substrate enables compact layouts and predictable performance. This architecture is well suited to high-current point-of-load applications in 48V nominal distributed power architectures common in telecom, computing, and industrial systems. Typical applications for this part include 48V point-of-load regulation in telecom and networking equipment, intermediate bus conversion in distributed power systems, industrial 48V rail regulation, high-efficiency LED driver front-end conversion, and battery voltage stabilization in 48V battery-backed systems. Designers typically pair the PI3756-00 with downstream Vicor or third-party point-of-load converters to power FPGAs, processors, ASICs, and high-speed digital ICs. When designing with this device, follow Vicor's reference layout in the datasheet closely, including the placement of input/output capacitors, the external inductor selection, and the thermal via array beneath the LGA package. Failure to follow the recommended layout can degrade efficiency, increase EMI, and cause thermal shutdown. The 5V VDR bias must be applied before or coincident with VIN to avoid start-up faults. This page synthesizes distributor pricing, drop-in alternatives within the Vicor Cool-Power ZVS Buck-Boost family, and practical design notes that complement the manufacturer datasheet and are not found on distributor catalog pages.
PI3USB9281CGEEX - USB Charger Detection IC | Diodes Inc
The Diodes Incorporated PI3USB9281CGEEX is a USB port protection IC with integrated charger detection, provided in a compact 15-pin X1-WLB2015-15 CSP package measuring 1.5 x 2.0 mm, designed for mobile communications power management applications. A USB charger detection and port protection IC is a power management device that sits between a USB connector and a portable system. It identifies what type of device or charger is attached to the USB port - such as standard downstream ports, dedicated charging ports, MHL accessories, OTG accessories, and car chargers per the CEA936 specification - and reports the result to the host processor so charging current can be set safely. According to Diodes Incorporated, the PI3USB9281C provides external detection for any USB device and can detect the various chargers available in the market, MHL accessories, OTG accessories, and car chargers per the CEA936 spec. The device also integrates a power switch with over-voltage and over-current protections. The VBUSIN input pin can tolerate voltages up to 28V, which is important for USB3.0 Power Delivery enabled systems where voltage transients on VBUS can occur. The integrated over-voltage protection blocks damaging voltages from reaching the sensitive system rail, while over-current protection limits fault current during short-circuit events. The tiny 1.5 x 2.0 mm wafer-level CSP footprint makes the PI3USB9281CGEEX well suited to space-constrained smartphone, tablet, and wearable designs where board area is at a premium. Typical applications include smartphone and tablet USB port front-end protection, portable media players, wearable devices, and any battery-powered product that charges from USB sources and must reliably identify charger type. Design considerations include routing VBUSIN with adequate PCB copper to handle the fault current path, and observing the 28V absolute maximum rating on VBUSIN when pairing the part with USB Power Delivery front ends. This page synthesizes distributor pricing from LCSC, DigiKey, and Mouser, drop-in alternative guidance, and practical design notes not found in the manufacturer datasheet, helping engineers shorten component selection cycles.
PI3USB9281CXWEX - USB Port Protection & Charger Detect | Diodes Inc.
The Diodes Incorporated PI3USB9281CXWEX is a USB port protection IC with integrated charger detection, housed in a 20-pin UQFN (3x4 mm) exposed-pad package, providing 28V-tolerant VBUSIN input and an integrated power switch with over-voltage and over-current protection for USB 2.0 ports. A USB port protection IC belongs to the power management IC family and sits between the USB connector and the system power path. Its role is to detect what type of device or charger is attached to the USB port, configure the charging current accordingly, and protect the upstream power rail from fault conditions such as over-voltage, over-current, and short circuits. In the system hierarchy, it functions as a specialized power management IC combining analog detection circuitry with a protected power switch. Key features include charger detection for the wide variety of chargers on the market, MHL accessory and OTG accessory detection, car-charger detection per the CEA936 specification, and an integrated power switch with over-voltage and over-current protection. The VBUSIN pin tolerates voltages up to 28V, which is critical for systems supporting the USB 3.0 PowerDelivery specification where VBUS can reach 20V. The PI3USB9281C family operates over a temperature range up to +85C, using an integrated detection state machine that enumerates the attached accessory type and reports it to the system controller, allowing the host to negotiate appropriate charging profiles without user intervention. Typical applications include smartphones, tablets, digital cameras, and notebooks with integrated Li-ion batteries that charge via USB connectors - exactly the portable and consumer applications cited in the manufacturer datasheet. When designing with this device, place the protection switch close to the USB connector and ensure the PCB can handle the configured charge current; verify fault-response behavior against the manufacturer datasheet for your specific VBUS transients. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
PKS604YN - 23W/44W Peak Offline Flyback Switch IC | Power Integrations
The Power Integrations PKS604YN is an intelligent offline flyback switcher housed in a TO-220-7C (6-lead, formed-leads) package. Designed for AC-DC power conversion, the device integrates a 700 V power MOSFET, oscillator, and protection circuitry on a single die, and operates from an offline (85-265 VAC) rectified DC input to deliver 23 W continuous and 44 W peak output power in open-frame applications, or 35 W continuous and 56 W peak in an enclosed adapter. The integrated switcher uses a fixed-frequency flyback topology switching at 277 kHz, eliminating the need for a separate PWM controller and reducing the external component count. According to Power Integrations' product family specifications, the PKS604YN family targets appliance, industrial, and auxiliary power applications where compact PCB area, robust protection, and reliable high-voltage isolation are critical. An offline flyback switcher IC is a type of AC-DC power supply controller that directly rectifies the AC mains and switches a high-voltage primary MOSFET to transfer energy through a transformer to an isolated secondary output. Compared to general-purpose PWM controllers, offline switchers integrate the power MOSFET, current-limit, and over-temperature protection blocks, simplifying EMI design and shrinking the bill of materials. They sit at the bottom of the power management hierarchy: AC-DC converter -> offline flyback switcher -> power management IC -> semiconductor device. The 700 V MOSFET rating provides substantial margin against line transients on universal-input mains (85-265 VAC). The 277 kHz switching frequency allows use of a small, low-profile transformer and small input/output filter capacitors. The IC embeds auto-restart protection for short-circuit, over-current, and over-temperature faults, allowing the converter to recover without external intervention. The TO-220-7C package with formed leads offers through-hole mounting with high creepage clearance for reinforced isolation, which is important for universal-input designs. A typical application circuit uses a bridge rectifier, bulk capacitor, transformer, secondary diode, and TL431/optocoupler feedback network. The high level of integration reduces PCB area by up to 50 percent versus discrete implementations, making the PKS604YN well-suited for compact sealed adapters and auxiliary supplies. Compared to discrete UC3842 + MOSFET designs, the integrated switcher shrinks the BOM, lowers standby power, and provides built-in fault handling. The device's frequency-modulation and PWM control produce low EMI, simplifying compliance with EN55022 and FCC Class B limits. Typical applications include appliance power supplies, white-goods controllers, industrial auxiliary supplies, standby rails for white goods, IoT gateways, and LED driver auxiliaries. When using this part, observe the recommended minimum bulk-capacitor voltage rating for 265 VAC operation, provide adequate heatsinking through the TO-220 tab, and place the Y-capacitor and transformer shield per Power Integrations' reference design to meet EMI limits.