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PD-9606GC/AC-US - 6-Port 90W PoE Midspan 802.3bt | Microchip
The Microchip Technology PD-9606GC/AC-US is a 6-port IEEE 802.3bt-compliant Power over Ethernet (PoE) midspan injector delivering up to 90 W per port at 55 V over 10/100/1000 Mbps Gigabit Ethernet links, supplied with a US AC power cord. A PoE midspan (also called a PoE injector or power injector) is a network device that adds electrical power to an Ethernet cable between a non-PoE switch and a powered device (PD). Sitting in the power-management hierarchy alongside PoE switches and endpoint PSEs, midspans let operators upgrade existing copper infrastructure to high-power PoE without replacing the Ethernet switch. Midspans are classified as Power Sourcing Equipment (PSE) under IEEE 802.3bt (Type 4, 4-pair power). Key features include 90 W per port output compliant with IEEE 802.3bt Type 4, six PoE ports in a compact indoor chassis, automatic detection and classification of connected PDs, short-circuit, overload and overvoltage protection, and network management capability (NMS) for remote monitoring via web/SNMP. The Gigabit data path ensures no throughput penalty on 10/100/1000BASE-T links, and 4-pair powering enables the full 90 W power class for emerging devices. The PD-9600GC family architecture implements the 802.3bt PSE functions, including LLDP-based power negotiation, so high-power PDs such as PTZ cameras with heaters and IR illuminators can draw their full power budget. The AC input operates from standard mains with internal rectification, and the units can be rack or wall mounted for structured-wiring closets. Typical applications power IEEE 802.11ax Wave-2 access points, Pan-Tilt-Zoom (PTZ) and dome surveillance cameras, IP videophones, thin clients, digital signage, and small 5G small-cell radios - all devices whose power demand exceeds the 30 W of older 802.3at deployments. Design consideration: budget the aggregate power draw across all six ports against the AC input rating, and confirm each PD supports 802.3bt 4-pair powering to achieve the full 90 W class. This page adds value beyond the manufacturer datasheet by consolidating distributor pricing, drop-in family alternatives, application guidance, and FAQ content optimized for AI search citation.
PD-USB-DP60 - PoE to USB-C 60W Adapter | Microchip Technology
The Microchip Technology PD-USB-DP60 is a Power over Ethernet (PoE) to USB-C power and data adapter that delivers up to 60W of USB power at its output. It accepts PoE input over a single Ethernet cable from a source up to 328 ft (100 m) away and exposes a USB-C connector carrying both USB Power Delivery and USB 3.1 Gen 1 data, enabling flexible installation of USB-C devices without a nearby AC outlet. A Power over Ethernet to USB-C adapter is a powered device (PD) that combines a PoE front-end (compliant with IEEE 802.3bt/at/af) with a USB-C Power Delivery (PD) sink/source controller and a USB-Ethernet bridge. In the broader hierarchy it sits within the power management > PoE powered-device category, bridging wired Ethernet infrastructure to the modern USB-C ecosystem used by tablets, laptops, NUCs, IP cameras, and information kiosks. By collapsing power and data onto a single Cat5e/Cat6 cable, it eliminates two long-standing pain points: AC outlet scarcity at endpoint locations and the inherent distance limits of native USB cables. Key features include 60W maximum output (20 V at 3 A) under USB PD, 10/100/1000 Mbps Gigabit Ethernet pass-through, USB 3.1 Gen 1 (5 Gbps) data through the integrated Microchip LAN7800 USB-to-Ethernet bridge, and a USB-C receptacle that supports plug-and-play on Windows hosts. The enclosure is a compact industrial-grade housing designed for fixed installation behind displays, under desks, or in ceiling-mounted camera deployments. IEEE 802.3bt compliance lets the PD-USB-DP60 negotiate the full 90 W PoE budget and draw up to 60 W for the USB-C load while leaving margin for cable and connector losses. Technically, the adapter integrates a PoE PD interface, a DC-DC conversion stage, a USB PD controller advertising 5 V/9 V/15 V/20 V profiles, and the LAN7800 bridge mapping the upstream Gigabit Ethernet to a USB 3.1 Gen 1 device port. This architecture means a downstream USB-C host sees the adapter as a wired GbE NIC plus a USB-PD power source, enabling single-cable operation for thin clients, mini PCs, and conferencing equipment. Thermal design is passive, relying on the metal enclosure as a heatsink for the internal 60 W conversion stage. Typical applications include IP cameras and video conferencing bars in conference rooms, interactive digital signage and information kiosks, small-form-factor PCs and NUCs deployed in ceiling or wall locations, smart monitors and displays that need power plus Ethernet from a single cable, and industrial IoT endpoints where USB-C is the standard host port. It is also a strong fit for AV-over-IP endpoints and PoE-powered LED controllers that use USB-C as a service or configuration port. When designing with the PD-USB-DP60, ensure the upstream PoE switch or midspan provides at least 802.3bt (Type 3 or Type 4) so the adapter can deliver a full 60 W output. Lower PoE classes will negotiate a reduced USB-PD profile. Plan for a maximum 100 m Cat5e/Cat6 run between the PoE source and the adapter, and confirm that the USB-C device you connect supports USB Power Delivery at the requested voltage profile. This page synthesizes distributor pricing, a drop-in alternative analysis, and practical installation guidance not found in the manufacturer datasheet alone.
PD69101ILQ-TR - 1-Port PoE+ PSE Controller 802.3at | Microchip
The Microchip Technology PD69101ILQ-TR is a single-port, mixed-signal, high-voltage Power over Ethernet (PoE) PSE controller and manager supporting IEEE 802.3af (PoE) and IEEE 802.3at (PoE+) standards, delivering up to 30 W port power in a 24-pin QFN (4x5 mm) package with exposed pad, rated for industrial temperature ranges. A PoE PSE (Power Sourcing Equipment) controller is a power management IC that lives inside Ethernet switches, injectors, and midspans. It governs how power is safely delivered over the same Cat-5/Cat-6 cable that carries data: it detects whether a connected Powered Device (PD) is genuinely PoE-compliant, classifies its power draw, monitors current and voltage, and disconnects power safely when a device is removed. This prevents damage to legacy non-PoE equipment and ensures the Ethernet port never exceeds negotiated power budgets. The PD69101 provides detection of IEEE 802.3af-2003 compliant PDs and IEEE 802.3at high-power devices, ensuring safe power feeding and disconnection per the standard. Its mixed-signal architecture integrates the precision analog detection and classification circuitry with a management interface, and the MODE0/MODE1 configuration pins support a serial monitoring mode in which the device continuously transmits the content of nine internal registers for system health diagnostics. LED I/O pins support port-status indication. Typical applications include Ethernet switch ports, PoE midspan injectors, security camera and wireless access point infrastructure, and industrial network equipment where the industrial-grade temperature rating is required. Designers should budget port power dissipation: at a 30 W PoE+ port the datasheet example shows about 180 mW in the sense element and 108 mW in the external MOSFET at 600 mA, so an appropriate low-Rds(on) external pass MOSFET and sense resistor are key to thermal margin. The QFN-24 exposed pad must be soldered to a grounded copper pour for heat spreading. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet, with pricing as of 2026-10-19.
PD69104B1F - 4-Port PoE Manager, IEEE 802.3af/at | Microchip
The Microchip Technology (formerly Microsemi) PD69104B1F is a 4-port, mixed-signal, high-voltage Power-over-Ethernet (PoE) Manager IC designed for network switches and midspans that deliver both data and DC power over standard Ethernet cabling. It supports IEEE 802.3af and IEEE 802.3at (PoE+) in autonomous or managed modes, integrates four independent power ports in a single 48-pin QFN package, and combines power circuitry, analog current sensing, and a digital control core for detection, classification, and real-time protection per-port. What is a PoE Manager? A PoE Manager (also called a PoE controller or PSE manager) is the central mixed-signal IC inside a Power Sourcing Equipment (PSE) such as a PoE switch or a midspan injector. It sits between the host CPU and the four high-side MOSFETs, supervises each port's detection signature, optional classification finger, inrush ramp, current-limit fold-back, disconnect detection, and AC/DC line-event timing. The PoE Manager category sits within Power over Ethernet controllers -> Power Management ICs, and its main engineering value is replacing discrete analog sense-and-control loops with a deterministic, IEEE-802.3-compliant firmware-controlled state machine per port. Key features include per-port 12-bit current telemetry, programmable current-limit thresholds (configurable up to ~950 mA per port for PoE+ applications), automatic mode, and integrated thermal protection with hardware disable. The PD69104B1/F integrates the analog front end and digital PoE state machine, exposing an I2C interface for host MCU access to telemetry, fault logs, and per-port enable/disable control, eliminating the need for a dedicated supervisory MCU in entry-tier PSE designs. Typical applications include 4- to 24-port managed PoE switches, midspan injectors, IP-camera NVR systems, industrial Ethernet switches, and PoE-powered wireless access points or thin clients. The wide operating voltage window (typical 32 V to 57 V rail) and integrated inrush control reduce external BOM cost by 8-12 components per port versus discrete designs, while the compact QFN-48 footprint enables high-density multi-port board layouts. When designing with this part, keep the high-voltage DC bus (typically -48 V telecom-derived, or +48 V rectified) at least 4 mm away from low-voltage Ethernet traces and place per-port 0.1 µF + 10 µF bypass capacitors as close to the IC power pin as possible; the integrated current sense rejects common-mode noise, but inadequate decoupling on the VMAIN pin will degrade detection accuracy at temperature extremes.
PD69104B1ILQ-TR - 4-Port PoE+ PSE Manager | Microchip Technology
The Microchip Technology (formerly Microsemi) PD69104B1ILQ-TR is a 4-port, mixed-signal, high-voltage Power-over-Ethernet (PoE) Power Sourcing Equipment (PSE) controller housed in a 48-pin QFN (8x8 mm) package. The device supports IEEE 802.3at (PoE+, Type 2, up to 30 W per port) and UPoE modes, and operates from a supply input of 44 V to 57 V typical, enabling network devices to share power and data over a single Ethernet cable. The B1 variant is employed by both Ethernet switches and midspans and integrates power, analog circuitry, and digital control on a single die. A PoE PSE controller (sometimes called a 'PoE manager') is the active device that injects DC power onto specific wire pairs of a Cat-5e/Cat-6 cable while a Powered Device (PD) negotiates its power class. PoE controllers sit at the intersection of the power management IC hierarchy and the interface IC family: they manage high-voltage FETs, perform IEEE 802.3af/at handshakes (detection, classification, inrush, disconnect), and present an I2C/SPI management interface to the host switch CPU. The PD69104B1ILQ-TR targets four-port switch and midspan designs, reducing per-port BOM by integrating four independent current-limited outputs and one shared management interface. Key features include support for 802.3af, 802.3at (Type 2, 30 W), and UPoE (60 W Type 3 over 4-pair) modes, autonomous or host-managed operation via I2C, per-port current limiting, overload and short-circuit protection, and an internal MOSFET gate driver for each port. The 48-QFN EP package provides an exposed thermal pad for improved heat dissipation in 1 Gbit/10 Gbit switch chassis with limited airflow. Architecturally, the PD69104B1 uses four integrated analog front-ends sampling current and voltage per port, a digital engine handling the IEEE 802.3 handshake, and a host-management block exposing status/interrupt pins. Its mixed-signal design eliminates the need for an external MCU per port and lets a single Ethernet switch ASIC orchestrate all four ports. Typical applications include 4-port PoE+ Ethernet switches, industrial midspans, IP-camera and VoIP-phone power sourcing, Wi-Fi access-point switches, and small-cell / IoT gateways requiring class-4 power delivery. The wide 44-57 V input tolerance also supports 48 V telecom and industrial bus rails. Design tip: maintain at least 100 mil of copper pour under the exposed thermal pad and keep the 0.1 uF Vcap bypass within 5 mm of the AGND pin to keep port-noise coupling low. Choose the B1 over the original PD69104 when UPoE (60 W) capability is required; the legacy die is limited to 802.3at. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers an engineering-centric reference beyond what the bare Microchip datasheet provides.
PD69201ILD-TR - 1-Port PoE PSE Manager, 802.3at/af | Microchip
The Microchip Technology PD69201ILD-TR is a single-port Power over Ethernet (PoE) Power Sourcing Equipment (PSE) Manager, fully compliant with IEEE 802.3af (PoE) and IEEE 802.3at (PoE+) standards, housed in a 10-pin DFN (4 mm x 3 mm) package. It integrates power, analog, and state-of-the-art logic to deliver up to 30 W of power per port over standard Ethernet cabling while supporting both standard and Legacy Powered Devices (PDs). The device operates from a single 44 V to 57 V supply rail, and its built-in MOSFET drivers allow direct connection to the RJ45 interface with minimal external components. A PoE Manager (often called a PSE Controller) is a specialized mixed-signal IC that sits inside an Ethernet switch or midspan and orchestrates the IEEE 802.3af/at handshake: it performs PD detection (valid 25 kΩ signature), classification (Type 1/2/3, including the 2-event Class-4 LLDP flow for 802.3at), inrush current limiting, and real-time disconnect monitoring. It belongs to the broader category of power management ICs, and more specifically to the Power over Ethernet controller sub-family, which itself sits under Ethernet physical-layer (PHY) companion devices. Key features include support for both AC and DC disconnect detection, integrated current sense with internal MOSFET gate drivers, an I2C/SMBus management interface for host MCU control, programmable current limit and inrush profiles, and industrial temperature range operation from -40 °C to +85 °C. According to the Microchip PD69201 datasheet, the IC also integrates signature removal, automatic maintain full signature (PMV/PME), and 802.3at 2-event classification, allowing seamless delivery of Type-1 (13 W) and Type-2 (25.5 W) power levels. The architecture combines a precision analog front end (AFE) for current/voltage sensing, a digital control core running the 802.3 state machine, and dual integrated N-channel MOSFET gate drivers (one for the port-power path, one for the auxiliary path). On-chip digital logic supports autonomous operation after I2C programming, and the device can be daisy-chained on the SMBus to manage up to 48+ ports with multiple PD69201/PD69204 controllers. Typical applications include managed enterprise Ethernet switches with PoE+ ports, industrial PoE injectors and midspans, IP security cameras (IPCs) and PTZ cameras, wireless LAN access points, VoIP phones, and IoT gateways. The industrial temperature grade and integrated drivers make it equally at home in factory-floor managed switches and outdoor IP cameras. When designing with this device, ensure the upstream DC-DC supply provides 44 V to 57 V with sufficient headroom for the lowest-powered PD, and follow Microchip's reference layout to keep the current-sense traces short. The I2C address is hardware-configurable, so multiple controllers can share a single management bus without collision. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet, providing context engineers need to evaluate, source, and design in the PD69201ILD-TR.
PD69220C-022419 - 48-Ch PoE PSE MCU, FW 2.24.19 | Microchip
The Microchip Technology PD69220C-022419 is a pre-programmed Power over Ethernet (PoE) Power Sourcing Equipment (PSE) controller MCU, firmware version 2.24.19, housed in a 32-pin LGA (5x5 mm) package. It is designed to pair with the Microchip PD69208M, PD69208T4, and PD69204T4 PSE analog managers to deliver Enhanced-mode PoE control across up to 48 ports (4-pair or 2-pair) at the switch level. A Power over Ethernet (PoE) controller is a specialized mixed-signal IC inside an Ethernet switch that orchestrates detection, classification, power-up, and disconnection of Powered Devices (PDs) over the spare or data pairs of an Ethernet cable. It sits within the power-management IC (PMIC) hierarchy as part of a PoE subsystem, which combines an MCU-style digital controller (PD69220) with one or more analog manager ICs (PD69208x) for current sense and MOSFET gate driving. The combined PSE subsystem complies with IEEE 802.3af, IEEE 802.3at (PoE+), IEEE 802.3bt, and the PoH standard. Key features of the PD69220C-022419 variant include a 32-LGA 5x5 mm footprint compatible with the older PD69200, an ESPI (Enhanced Serial Peripheral Interface) link to the host switch CPU, an integrated firmware image (v2.24.19) that supports legacy PD detection plus Auto and High-power classes, and preloaded algorithms for inrush management, AC/DC disconnect detection, and per-port current limiting. Per-port controlled outputs are managed through the companion PD69208T4 / PD69204T4 managers, not directly by this MCU. Architecturally, the PD69220 is built around an embedded 8-bit MCU core with mask/firmware storage and digital I/O for host communication. The firmware image selected at order time (here, v2.24.19) defines port count support, classification behavior, and other behaviors. Designers can upgrade via later firmware versions such as PD69220C-022419 and PD69220C-022319 by re-spinning a board if the LGA footprint matches. Typical applications include managed enterprise Ethernet switches with PoE+ ports, 802.3bt Type-3/Type-4 PSE midspans and endspans, indoor/outdoor wireless access points, IP surveillance cameras powered over Ethernet, and industrial Ethernet switches that feed Class-8 PoH loads. Designers choose it when they need up to 48 PoE channels controlled by one MCU with a single firmware SKU. For layout, place the 32-LGA thermal pad over a ground pour to dissipate the small controller self-heating. Provide a clean 3.3 V rail and route the ESPI bus as short as possible to the host processor; longer traces should be impedance-controlled. This page synthesizes distributor pricing, drop-in firmware-revision alternatives, and practical design notes not found in the manufacturer datasheet alone.
PD70200ILD-TR - 802.3at PoE PD Controller 57V | Microchip
The Microchip Technology PD70200ILD-TR is an IEEE 802.3af/at Power over Ethernet (PoE) Powered Device (PD) front-end controller with an integrated 0.6 ohm internal pass FET, supporting 48W PoE+ power levels in a 12-pin DFN (4x3 mm) exposed-pad package. A PoE PD interface controller is the analog front end that sits between a Power Sourcing Equipment (PSE) device, such as a network switch, and the powered electronics at the far end of the Ethernet cable. Within the power management IC hierarchy, it performs input rectification control, detection, classification, inrush current limiting, and disconnect identification so the PSE can safely deliver power over the same twisted-pair cabling that carries data. Key features include full IEEE 802.3at (PoE+) and 802.3af (PoE) compliance, dual-event classification detection for Type 2 power negotiation, PGOOD status indication, overcurrent protection, and thermal protection. The integrated 0.6 ohm MOSFET eliminates an external pass device, reducing board area and Bill of Materials cost compared with discrete controller-plus-FET solutions. Architecturally, the PD70200 transmits integrated power and analog status data through a single 12-pin package, handling the IEEE 802.3af/at detection signature (25.5 kohm), class marking, and inrush management autonomously. Its wide 0V to 57V supply range tolerates the full PoE+ PSE voltage envelope, while the low 1 mA operating supply current keeps standby losses minimal. Typical applications include IP security cameras, wireless access points, VoIP phones, and networked LED lighting drivers that must draw power directly from the Ethernet cable. The device is equally suitable for industrial PoE sensors and building-automation endpoints. For design, ensure the thermal pad is well soldered to the PCB copper pour, since the internal FET dissipates conduction losses proportional to I2 x 0.6 ohm at full 48W load. This page adds value beyond the manufacturer datasheet by combining distributor pricing, drop-in alternative analysis, and practical design notes in one reference.
PD70210ILD-TR - 802.3at PoE PD Controller with 0.3 Ohm FET | Microchip
The Microchip Technology PD70210ILD-TR is a single-channel IEEE 802.3at (PoE+) and 802.3af (PoE) Powered Device (PD) front-end interface controller with an integrated 0.3 ohm power MOSFET, housed in a 16-pin DFN (5x4 mm) package. A Powered Device interface controller is the front-end power-management IC in a Power over Ethernet system. It sits between the Ethernet cable (via the transformer center taps and bridge rectifier) and the isolated DC-DC converter inside the powered device, within the broader hierarchy: PoE PD controller -> power management IC -> semiconductor. It performs the detection, classification, inrush control, and disconnect functions mandated by the IEEE 802.3af and 802.3at standards. Key features include support for IEEE 802.3af, 802.3at, HDBaseT, and general 2-pair or 4-pair power configurations; an internal 0.3 ohm pass FET that eliminates an external external pass transistor; and an advanced classification block supporting 2, 3, 4, and 6 event classification for full 802.3at and Power-over-HDBaseT (PoH) negotiation. The IC identifies, via its SUPP_Sx pins, which of the four cable pairs actually receive power and generates the corresponding flags. An internal bleeder rapidly discharges the input capacitor of the downstream DC-DC converter, ensuring fast re-detection and port power-up when the Ethernet cable is suddenly removed and reinserted into the RJ45 jack. Typical applications include IP security cameras, wireless access points, VoIP phones, HDBaseT extenders, and networked industrial equipment powered over 2-pair or 4-pair PoE infrastructures. The integrated FET and full protection set reduce external component count. Design consideration: verify the classification resistor settings against the downstream DC-DC converter power class so the PSE allocates sufficient power, and confirm inrush capacitor sizing per the IEEE timing windows. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.
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.