Rack & server PSU with 48-V output

Products and reference designs

Rack & server PSU with 48-V output

Block diagram


Our integrated circuits and reference designs help you create compact rack and server power supply units (PSUs) with 48-V of high-energy efficiency across a wide-load range aimed to meet 80+ titanium standards.

Design requirements

Rack and server PSU with 48-V output designs often require:

  • Higher efficiency (80+ titanium) across 20-80% load range with soft-switching, bridgeless PFC or GaN.
  • Compact size and high power density for data-center applications.
  • Digital solution with PMBus for scalability and connectivity.

Explore applications similar in function and design
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Block diagram

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Technical documentation

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Type Title Date
Test report 3-kW 180-W/in3 Single-Phase Totem-Pole Bridgeless PFC Ref. Des. W/ E-Meter Func. PDF | HTML 29 Nov 2023
Application note UCC21520, a Universal Isolated Gate Driver with Fast Dynamic Response (Rev. A) PDF | HTML 29 Jun 2018
White paper Understanding failure modes in isolators (Rev. B) PDF | HTML 29 Jan 2024
White paper Impact of an isolated gate driver (Rev. A) 28 Feb 2019
White paper High Voltage Isolation Quality and Reliability for AMC130x 27 Jun 2016
White paper Design considerations of GaN devices for improving power converter efficiency 20 Nov 2017
Application brief Overcurrent Protection in High-Density GaN Power Designs 19 Oct 2018
White paper GaN FET-Based CCM Totem-Pole Bridgeless PFC 16 May 2019
White paper GaN FET-Based CCM Totem-Pole Bridgeless PFC 16 May 2019
Application note Digital Isolator Design Guide (Rev. G) PDF | HTML 13 Sep 2023
Analog Design Journal A comparative analysis of topologies for a bridgeless-boost PFC circuit 13 Jul 2018
White paper High-voltage reinforced isolation: Definitions and test methodologies 12 Aug 2019
Application note Thermal Considerations for Designing a GaN Power Stage (Rev. B) 11 May 2022
Application note Light load THD and Eff Opt of Digital Cntrl PFC Converter Int Valley Switch Cntr (Rev. A) 11 May 2022
Application note Digitally Controlled Bridgeless Power Factor Correction (BL PFC) using C2000 MCU (Rev. A) PDF | HTML 11 May 2022
Application brief Considerations for Selecting Digital Isolators 10 Oct 2018
Analog Design Journal Control challenges in a totem-pole PFC 10 May 2017
White paper A comprehensive methodology to qualify the reliability of GaN products 09 Mar 2015
Analog Design Journal How to reduce current spikes at AC zero-crossing for totem-pole PFC 02 Nov 2015

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