DC-DC转换器
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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.
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.
PTH04T241W - 10A, 2.2-5.5V Input POL Power Module | TI
The Texas Instruments PTH04T241W is a 10-A rated, non-isolated point-of-load (POL) DC-DC converter power module operating from a 2.2V to 5.5V input with a wide adjustable output of 0.69V to 3.6V, set by a single external resistor. The module is optimized for all-ceramic output capacitor designs and belongs to the second generation of the popular PTH series, offering a reduced footprint and additional features over the original family. A non-isolated power module is a complete DC-DC converter that integrates the PWM controller, power MOSFETs, inductor, and compensation network into a single surface-mount package, delivering a regulated output without galvanic isolation. Such modules sit within the voltage regulator hierarchy, specifically the buck (step-down) DC-DC converter family of power management ICs, and dramatically reduce design time versus discrete converter implementations. Key features include up to 96% efficiency, a total output voltage variation of only plus/minus 1.5%, and TurboTrans technology, which lets a single resistor tailor transient response and reduce required output capacitance. Remote sense, output voltage sequencing, and under-voltage lockout support reliable multi-rail systems. Internally, the PTH04T241W uses a synchronous buck topology with integrated MOSFETs and fixed-frequency PWM control. The TurboTrans control loop optimization allows engineers to meet aggressive load-step requirements typical of modern processors without oversizing capacitors, while the all-ceramic-capacitor optimization lowers ESR-related losses and improves long-term reliability since ceramic capacitors do not wear out like electrolytics. Typical applications include powering DSPs, FPGAs, ASICs, and microprocessors in networking, telecom, and data-communication equipment, where 3.3V or 5V intermediate buses must be stepped down to low core voltages at ampere-level loads. The compact footprint suits space-constrained line cards and blades. When designing, size the TurboTrans resistor to the expected load transient, follow datasheet input/output capacitor recommendations, and account for thermal dissipation at high output current using adequate PCB copper area.
PTH05050WAZ - 6A 5V-In Wide-Output Adjust PoL Module | Texas Instruments
The Texas Instruments PTH05050WAZ is a 6 A, 5 V-input non-isolated wide-output-adjust Power Module with Auto-Track sequencing, packaged in a 6-pin DIPMODULE (EUV) surface-mount form factor. It accepts a 4.5 V to 5.5 V input and produces an adjustable output from 0.8 V to 3.6 V at up to 6 A continuous load, delivering 21.6 W of output power with efficiencies as high as 95 percent and a power density of 135 W/in³. The 'Z' suffix designates a Pb-free, RoHS-compliant surface-mount termination suitable for lead-free reflow. A non-isolated Point-of-Load (PoL) DC-DC module is a fully integrated switching converter that mounts directly next to a load on the same printed circuit board as its load IC, eliminating the intermediate bulk converter stage and the parasitic losses of long power-trace runs. PoL modules sit within the broader hierarchy of DC-DC converters, which in turn belong to the power management semiconductor category that converts and regulates voltage rails in distributed power architectures. Key features of the PTH05050WAZ include pre-bias start-up for safe paralleling with other supplies, an output ON/OFF inhibit input, Margin Up/Down control pins for board-level testing, Auto-Track sequencing that lets multiple modules ramp together or track an external rail, and the surface-mount through-hole DIPMODULE footprint that combines low-inductance SMT pads with mechanical through-hole pins. The wide-output-adjust range (0.8 V to 3.6 V) covers the core voltages of modern DSPs, FPGAs, ASICs, and DDR memory rails. Architecturally, the PTH05050WAZ is built around a synchronous buck topology with integrated power MOSFETs, a power inductor, and control IC all inside the module body. This integration removes the need for external magnetics design and significantly reduces radiated EMI by keeping the high-di/dt loop inside the package, while still delivering high efficiency across the 4.5 V to 5.5 V nominal 5 V intermediate bus. Typical applications include 5 V intermediate-bus architectures powering low-voltage DSPs, FPGAs, ASICs, and DDR memory; telecom and networking line cards requiring sequenced multi-rail power; industrial controllers and distributed-power systems; and any board that needs a compact, high-efficiency point-of-load converter with sequencing and margining built in. When designing with this part, follow the manufacturer's recommended input/output capacitor values, sequence rails using Auto-Track, and pay attention to derating at high ambient temperatures above 55 °C. The PTH05050WAZ is a member of the well-known TI PTH/POL family, making it drop-in compatible with several 6 A, 5 V-input siblings.
PTH05T210W - 30A, 5V Input PoL Power Module | Texas Instruments
The Texas Instruments PTH05T210W is a high-performance 30-A rated, non-isolated point-of-load (PoL) DC-DC converter power module using a multi-phase switch-mode topology. It operates from a 4.5V to 5.5V input and delivers a wide adjustable output voltage from 0.7V to 3.6V, targeting low-voltage, high-current loads in space-constrained systems. This second-generation PTH-series module offers a reduced footprint and improved features over the original PTH family. A non-isolated PoL module is a type of DC-DC converter (part of the broader voltage regulator / power management IC hierarchy) that steps a distribution rail down to a regulated low voltage close to the load, without galvanic isolation. It integrates the controller, power MOSFETs, inductor, and loop compensation into one packaged module, replacing dozens of discrete components and dramatically shortening power-supply design cycles. Key features include TI's proprietary TurboTrans technology, which lets designers optimize transient response and reduce required output capacitance, and Auto-Track sequencing for controlled power-up/down of multiple modules. Output voltage adjust is accomplished with a single external resistor, and the module provides remote sense for tight load regulation plus a power-good flag for system supervision. Multi-phase operation achieves high efficiency (typically around 96% for 5V-in to 3.3V-out per TI data) while minimizing output ripple. Architecturally, the multi-phase topology interleaves switching channels so ripple currents partially cancel, allowing smaller magnetics and faster load-transient response than single-phase bucks at 30 A. The open-frame module construction aids airflow cooling in forced-air systems. Typical applications include powering DSPs, FPGAs, ASICs, and microprocessors in telecom, networking, server, storage, and industrial equipment. The 30-A capability and wide output range also fit test and measurement platforms. Design consideration: follow the datasheet input/output capacitance recommendations to maintain stability and transient response; TurboTrans pin settings should be tuned to the actual output capacitor network for best performance.
PXE1410CDM-G003 - Infineon Digital Multiphase Power Controller
The Infineon Technologies PXE1410CDM-G003 is a digital multiphase DC-DC switching controller in a PG-VQFN-40-13 package, with the verified distributor listing identifying it as a power-management controller for demanding voltage-regulator designs. Its stated function is digital control of external power stages, making it suitable for high-current server, AI accelerator, and telecom rails when paired with compatible Infineon OptiMOS DrMOS devices. The package and device family place it in the controller category rather than the final power-stage category. A digital multiphase controller coordinates multiple PWM power channels to distribute high output current and reduce the burden on any single stage. In a server or accelerator rail, it can receive configuration and telemetry commands through its digital control interface, while the external DrMOS devices perform the high-current switching. The PXE1410CDM-G003 is therefore a controller component whose final converter performance also depends on the selected power stages, inductors, MOSFETs, sensing network, compensation settings, and PCB implementation. The verified data identifies the part as a VQFN-40 device and describes it as a Primarion digital power controller intended for high-current applications. The available snippets also associate the family with adaptive voltage positioning, precision current and temperature telemetry, and interfaces including PMBus or I2C. These features are useful when a power rail requires programmable control, monitoring, and coordinated phase operation, but exact numerical limits, switching frequency, phase count, voltage range, current rating, thermal resistance, and pin-level electrical limits are not supplied in the provided data. Infineon’s PXE1410CDM-G003 is best evaluated as a platform component rather than a standalone regulator. Designers should select compatible external power stages and confirm all controller requirements against the manufacturer datasheet before layout release. The controller’s digital configuration, phase sequencing, current-sense implementation, fault handling, and thermal telemetry must be validated in the complete converter design rather than inferred from distributor category labels. Typical applications include high-current server voltage rails, AI accelerator power delivery, telecom equipment, and other regulated systems requiring multiple synchronized power stages. The principal design trade-off is flexibility versus implementation complexity: digital multiphase control can improve rail scalability and observability, but it demands careful firmware or host configuration, power-stage coordination, compensation, fault-response design, and high-current PCB layout. The most important layout consideration is keeping the controller, sensing paths, gate-drive connections, and power-stage current loops compact and appropriately partitioned. A multilayer board with short high-current paths, low-inductance switching loops, Kelvin current-sense connections, and controlled return paths is generally preferable to a sprawling two-layer implementation. Use the manufacturer’s recommended application circuit and layout guidance before copying a generic reference design. This page consolidates the verified distributor identity, package information, pricing indication, and available source links for PXE1410CDM-G003, while clearly separating confirmed data from parameters that still require datasheet confirmation.
PXM1310CDMG003XTMA1 - VR12.5/VR13 Digital 3+1 DDR Controller | Infineon
The Infineon PXM1310CDMG003XTMA1 is a digital dual-output 3+1 phase PWM controller compliant with Intel VR12.5 and VR13 specifications, designed for high-current CPU/GPU core voltage regulation and DDR memory power in server, workstation, and high-end desktop platforms. Housed in a 40-pin PG-VQFN package with exposed thermal pad, it integrates six PWM outputs plus a peripheral rail to manage both the core voltage regulator and the memory subsystem in a single IC. According to the Infineon Primarion datasheet family, the controller pairs with Infineon PowIRstage devices (such as the TDA21472 or TDA21535) to form a complete multiphase synchronous buck solution. A digital multiphase buck controller is a specialized power management IC that uses firmware-configurable loop compensation, telemetry, and adaptive voltage positioning to deliver tightly regulated core voltages to modern processors. Within the broader power management taxonomy, it sits as a DC-DC controller above simple voltage regulators and below fully integrated power modules; the 3+1 phase architecture specifically allocates three phases to the core rail and one phase to the system agent/graphics sub-rail, which is the typical Intel VR12.5/VR13 topology for desktop and entry-server CPUs. Key features of the PXM1310CDMG003XTMA1 include Intel VR12.5/VR13 protocol support with SVID/I2C telemetry, six PWM outputs for flexible phase assignment, embedded firmware for adaptive voltage positioning and fault response, and per-phase current balancing. The 40-pin PG-VQFN package exposes the thermal pad directly to the PCB copper pour, enabling heat extraction through the top-side power stages rather than through the controller itself. The device uses a state-machine-based digital control loop rather than an analog Type-III compensator, which simplifies design-in by eliminating external compensation components. Telemetry such as output voltage, current, and temperature is reported over PMBus/I2C for closed-loop platform monitoring, while the integrated fault handler protects against over-voltage, under-voltage, over-current, and over-temperature conditions. This architecture replaces what traditionally required a supervisor IC plus analog PWM controller combination. Typical applications include Intel VR12.5/VR13 desktop and server CPU core rails, DDR3/DDR4 memory power (VDDQ and VTT), workstation motherboard voltage regulators, and embedded computing platforms that require PMBus-programmable telemetry. The 3+1 phase configuration suits 95W to 150W TDP processor classes where digital telemetry and adaptive transient response are required. When designing with this part, validate that the chosen PowIRstage supports the controller's PWM frequency and current sense scheme, and observe Infineon's layout guidance for the SVID/I2C bus routing to avoid coupling into the switching node. The exposed thermal pad must be soldered to a continuous ground copper pour for both thermal dissipation and low-impedance gate return paths.
RHP50000 - 12.5A Silent Switcher 2 Step-Down | Analog Devices
The RHP50000-CSL is a very small, low noise, monolithic step-down DC/DC converter from Analog Devices, capable of delivering up to 12.5A of output current from a 2.25V to 5.5V input supply. It employs the Silent Switcher 2 architecture with internal hot loop bypass capacitors to achieve both low EMI and high efficiency at switching frequencies as high as 5MHz. The device is available in an 18-lead TFQFN package with exposed pad, making it suitable for space-constrained, high-current power delivery in commercial space and other demanding applications. A step-down DC/DC converter, also known as a buck converter, is a type of switching regulator that efficiently converts a higher input voltage to a lower output voltage. Unlike linear regulators, which dissipate excess power as heat, buck converters use switching elements and energy storage components to achieve high efficiency, especially when the input-to-output voltage difference is large. The RHP50000 is a synchronous buck converter, meaning it uses two MOSFETs (high-side and low-side) to minimize conduction losses and eliminate the need for an external Schottky diode. This architecture is fundamental to modern power management ICs, enabling compact, high-current power solutions for processors, FPGAs, and other digital loads. Key features of the RHP50000 include its 12.5A output current capability, 2.25V to 5.5V input voltage range, and adjustable output voltage down to 0.5V. The Silent Switcher 2 architecture integrates bypass capacitors to reduce EMI, simplifying PCB layout and reducing the need for external filtering. The device operates at switching frequencies up to 5MHz, allowing the use of small inductors and capacitors, which reduces solution footprint. It also features a precision enable pin, soft-start, and power-good output for reliable power sequencing. Technically, the RHP50000 uses a current-mode control architecture with internal compensation, providing fast transient response and stable operation over a wide range of output capacitors. The integrated hot loop bypass capacitors minimize parasitic inductance in the switching loops, which is critical for achieving low EMI at high frequencies. The device also includes overcurrent protection, thermal shutdown, and undervoltage lockout to ensure robust operation in harsh environments. Typical applications include powering FPGAs, ASICs, and processors in commercial space systems, as well as high-current point-of-load (POL) converters in networking, telecommunications, and industrial equipment. The wide input range and high output current make it ideal for 5V or 3.3V rails that need to step down to core voltages like 1.2V or 0.9V. When designing with the RHP50000, pay careful attention to the input and output capacitor placement to minimize parasitic inductance. The AGND pin should be connected to the negative terminal of the output capacitor at the load for good load regulation. Use a solid ground plane and follow the layout guidelines in the datasheet to achieve the best EMI performance.
RT6150BGQW - 0.8A Buck-Boost DC/DC Converter | Richtek
The Richtek RT6150BGQW is a high-efficiency, fixed-frequency current-mode Buck-Boost DC/DC switching regulator delivering up to 800 mA of output current in a 10-pin WDFN (GQW) exposed-pad package. It operates from input voltages above, below, or equal to the output voltage with an adjustable output starting at 1.8 V, providing a continuous transfer function through all operating modes including buck, boost, and buck-boost regions. A buck-boost converter is a switched-mode power supply topology that maintains a stable output voltage even when the input voltage crosses the regulated output level. Unlike pure buck or pure boost converters, the buck-boost can both step down (VIN > VOUT) and step up (VIN < VOUT) within the same power stage, making it ideal for battery-powered systems where the cell voltage starts above and ends below the load rail. The RT6150 belongs to the broader switching regulator family within power management ICs, sitting alongside buck, boost, and SEPIC converters. Key features include a 1 MHz switching frequency that enables the use of small external inductors and ceramic capacitors, a low 60 µA quiescent current in Power Save Mode (PSM) for extended battery life, and user-controlled PSM activation via the PS pin. The device integrates two N-MOSFET and two P-MOSFET switches, eliminating the need for external FETs. Protection features include cycle-by-cycle current limit, thermal shutdown, and soft-start. Architecturally, the RT6150 uses a current-mode control scheme that provides excellent line and load transient response while simplifying compensation. The 1 MHz fixed frequency enables predictable EMI behavior and the use of small magnetics, while the integrated 4-switch bridge provides seamless transitions between operating modes without output voltage discontinuity. Typical applications include single-cell lithium-ion battery powered devices, multi-cell alkaline or Ni-MH systems, portable industrial instruments, USB-powered peripherals, and IoT sensor nodes. The buck-boost topology is particularly valuable when the battery voltage range spans the load rail - for example, a single Li-ion cell (3.0 V to 4.2 V) powering a 3.3 V rail. Designers should evaluate inductor ripple current, output capacitor ESR, and PSM/PWM mode trade-offs. In PWM mode (PS pin high), the regulator operates at fixed 1 MHz for low-ripple performance; in PSM mode (PS pin low), it skips pulses at light load to maximize efficiency. Adequate thermal copper under the exposed pad is essential for full 0.8 A operation. This page synthesizes distributor pricing, parametric drop-in alternatives, and practical buck-boost design notes that complement the manufacturer datasheet.
RT8071AZQW - 3A 2MHz Synchronous Step-Down Converter | Richtek
The Richtek RT8071AZQW is a 3A, 2 MHz synchronous step-down DC-DC converter housed in a 10-pin DFN-10-EP (3x3 mm) package with an exposed thermal pad. It operates from a 2.7V to 5.5V input voltage range and delivers an adjustable output voltage from 0.6V up to VIN, making it well suited for point-of-load regulation in space-constrained designs. Internal MOSFETs (P-channel high-side and N-channel low-side) eliminate the need for external switches, and the 2 MHz nominal switching frequency permits the use of small surface-mount inductors and ceramic output capacitors. A synchronous step-down (buck) converter is a type of DC-DC switching regulator that steps a higher DC input voltage down to a lower regulated DC output voltage. Buck converters belong to the broader family of switch-mode power supplies (SMPS), which sit above linear regulators in efficiency but require an inductor, output capacitor, and feedback compensation. Within the SMPS hierarchy, the RT8071AZQW is positioned as a small-footprint, high-frequency point-of-load converter that targets portable, handheld, and embedded designs where PCB real estate is at a premium. Key features include a typical peak current limit of approximately 4 A for robust transient handling, internal soft-start to limit inrush current, power-good indication for sequencing, and a typical quiescent current on the order of tens of microamperes to maximize light-load efficiency. The exposed thermal pad on the DFN-10 package provides a low thermal resistance path, allowing the device to deliver 3 A continuously without an external heatsink when the PCB copper area is properly sized. The RT8071AZQW uses voltage-mode PWM control with internal compensation, which simplifies the external BOM to an input capacitor, an inductor, an output capacitor, and two feedback resistors. The 2 MHz switching frequency keeps the converter above the AM broadcast band, avoiding audible interference in audio-adjacent designs. Internal synchronous rectification eliminates the external Schottky diode required by older buck topologies, improving efficiency at light loads. Typical applications include portable media players, set-top boxes, blade servers, notebook computers, and distributed 5V POL rails in networking and storage equipment. The wide 2.7V-5.5V input range covers single-cell Li-ion, USB, and 3.3V/5V system bus rails, while the adjustable output supports DDR memory, FPGA core rails, and I/O supplies. When designing with this part, keep the input ceramic capacitor within 2 mm of the VIN and GND pins, route the feedback trace away from the SW node, and provide at least four thermal vias under the exposed pad to keep junction temperature within ratings at full 3 A load. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical PCB layout notes that go beyond the manufacturer datasheet, enabling faster design-in and BOM decisions.