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Data center power requirements are constantly increasing and traditional power systems are no longer sufficient to meet this growing demand. The power distribution chain, from the frontend AC-DC stage to the backend DC-DC power distribution, needs to deliver the best performance in term of efficiency, power density and ability to interface with the digital world. It must ensure an optimized usage of energy thanks to different strategies, such as workload redistribution, dynamic resource allocation or virtualization.

ST offers a full set of products and solutions to ensure the most optimized power design across all the distribution chain. Our digital and analog controllers combined with MOSFETs and drivers are key ingredients for implementing the most efficient and most dense AC-DC power delivery. On the backend DC-DC power distribution, ST offers advanced solutions for the Point-of-Load conversion and a recently developed innovative DC-DC conversion from the 48V DC supply.

Part Number
Description
EVLSTNRG-1KW 1 kW SMPS digitally controlled multi-phase interleaved converter using STNRG388A Quick view

Key Features

  • Digital controller: STNRG388A
  • 3-phase interleaved DC/DC architecture
  • Full load power: 1000 W (scalable up to 3 kW)
  • Efficiency: more than 94% from 10% to full load
  • Peak efficiency: 96.5% at full load
  • Stand-by consumption: 425 mW
  • Input voltage range: 350 ÷ 420 V dc
  • CC/CV output regulation
  • Output voltage regulation: 133 V
  • Output current regulation: 7.5 A
  • Maximum output current for each phase: 2.5 A
  • Modular power and control board

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EVL400W-ADP/ATX 12V - 400W SMPS for Adapter, Desktop and AIO using L4984D, L6699 and SRK2000A Quick view

Key Features

  • Universal input mains voltage range: from 90 Vac to 264 Vac - frequency from 45 to 65 Hz
  • Output voltage: 12 V ± 2% at 33 A continuous operation
  • Overall efficiency at full load: above 87% according to ENERGY STAR® 6.1 for computers and compliant with 80PLUS Gold Level
  • Average efficiency: > 89%, according to European CoC ver. 5 Tier 2 for external power supplies
  • No load mains consumption: < 0.15 W at 230 Vac, according to European CoC ver. 5 Tier 2 for external power supplies
  • Light-load efficiency: European CoC ver. 5 Tier 2 requirements for external power supplies and EuP lot 6 Tier 2 for office equipment (Pin < 500 mW for Pout = 250 mW at 115 Vac and 230 Vac)
  • Mains harmonics: meets EN61000-3-2 Class-D and JEITA-MITI Class-D
  • EMI: according to EN55022 Class-B
  • Safety: meets EN60950 standards
  • RoHS compliant

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FEATURED RESOURCES

Schematics BOM Gerber
STEVAL-ISF003V1 Low standby losses power front-end with inrush current-limitation Quick view

Key Features

  • Fully electronic solution without the need for an inrush current limiter resistor and its bulky bypass electromechanical relay
  • DC bus disconnection at standby to reduce losses below 0.3 W
  • Inrush current compliance with IEC61000-3-3
  • Operation allowed with PFC (continuous or discontinuous)
  • Compliant with EN 55015, IEC 61000-4-11
  • Criteria A at 4 kV IEC 61000-4-5 and at 4 kV IEC 61000-4-4
  • RoHS compliant

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FEATURED RESOURCES

Schematics BOM Gerber
STEVAL-ISA147V3 500 W fully digital AC-DC power supply (D-SMPS) based on STM32F334C8 microcontroller Quick view

Key Features

  • Input AC voltage: 90 V to 264 V
  • Input AC frequency: 45 Hz to 65 Hz
  • Nominal power: 500 W
  • Output voltage: 12 V
  • Semi-Bridgeless PFC stage
  • DC-DC stage: resonant LLC with synchronous rectification
  • Peak efficiency: 94%
  • PFC switching frequency: 60 kHz
  • DC-DC switching frequency: 80 kHz to 115 kHz (burst mode above)
  • HF transformer isolation voltage: 4 kV
  • Cooling: natural convection up to 300 W, forced cooling above 300 W
  • PFC control: managed by STM32F051K8
  • LLC control: managed by STM32F334C8
  • Input short-circuit protection
  • Input under/overvoltage protection
  • Input under/overfrequency protection
  • DC Bus under/overvoltage protection
  • Output short-circuit protection
  • Output under/overvoltage protection
  • Overtemperature protection
  • RoHS compliant

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FEATURED RESOURCES

Schematics BOM Gerber
STEVAL-DPSTPFC1 3.6 kW PFC totem pole with inrush current limiter reference design using TN3050H-12WY and SCTW35N65G2V Quick view

Key Features

  • 97.5 % efficiency at full load
  • Max. 5 % THD at 10 % of full load
  • Compact PFC converter
  • Higher switching lifetime
  • Compliant with EMI norms at 4kV
  • RoHS compliant
  • WEEE compliant

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STEVAL-ISA172V2 2 kW fully digital AC-DC power supply (D-SMPS) evaluation board Quick view

Key Features

  • Input AC voltage: 90 V to 264 V
  • Output voltage: 48 V or 52 V, Max output current: 42 A
  • Input AC frequency: 45 Hz to 65 Hz
  • Nominal output power: 2 kW
  • Interleaved PFC stage
  • PFC switching frequency: 60 kHz
  • PFC Average current mode control
  • Cycle by cycle PFC current control
  • Maximum power factor: 0.99
  • DC-DC stage: full-bridge phase-shifted ZVS with synchronous rectification
  • DC-DC switching frequency: 100 kHz
  • Overall efficiency: 80 PLUS Platinum level
  • HF transformer isolation voltage: 4 kV
  • Forced cooling with air flow speed modulation according to the output power
  • Over-temperature protection
  • Output short-circuit protection
  • PFC control & DC-DC control: managed by STM32F334C8
  • PFC power stage based on MDmesh M2 Power MOSFETs and SiC Diodes
  • DC-DC power stage based on MDmesh DM2 Power MOSFETs
  • Synchronous rectification based on STripFET Power MOSFETs
  • Active clamp circuit based on MDmesh DM2 Power MOSFETs
  • EMC filter for noise reduction
  • RoHS compliant

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FEATURED RESOURCES

Schematics BOM Gerber
Part Number
EVLSTNRG-1KW

1 kW SMPS digitally controlled multi-phase interleaved converter using STNRG388A

Key Features

  • Digital controller: STNRG388A
  • 3-phase interleaved DC/DC architecture
  • Full load power: 1000 W (scalable up to 3 kW)
  • Efficiency: more than 94% from 10% to full load
  • Peak efficiency: 96.5% at full load
  • Stand-by consumption: 425 mW
  • Input voltage range: 350 ÷ 420 V dc
  • CC/CV output regulation
  • Output voltage regulation: 133 V
  • Output current regulation: 7.5 A
  • Maximum output current for each phase: 2.5 A
  • Modular power and control board

Show More

FEATURED RESOURCES

BOM
EVL400W-ADP/ATX

12V - 400W SMPS for Adapter, Desktop and AIO using L4984D, L6699 and SRK2000A

Key Features

  • Universal input mains voltage range: from 90 Vac to 264 Vac - frequency from 45 to 65 Hz
  • Output voltage: 12 V ± 2% at 33 A continuous operation
  • Overall efficiency at full load: above 87% according to ENERGY STAR® 6.1 for computers and compliant with 80PLUS Gold Level
  • Average efficiency: > 89%, according to European CoC ver. 5 Tier 2 for external power supplies
  • No load mains consumption: < 0.15 W at 230 Vac, according to European CoC ver. 5 Tier 2 for external power supplies
  • Light-load efficiency: European CoC ver. 5 Tier 2 requirements for external power supplies and EuP lot 6 Tier 2 for office equipment (Pin < 500 mW for Pout = 250 mW at 115 Vac and 230 Vac)
  • Mains harmonics: meets EN61000-3-2 Class-D and JEITA-MITI Class-D
  • EMI: according to EN55022 Class-B
  • Safety: meets EN60950 standards
  • RoHS compliant

Show More

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FEATURED RESOURCES

Schematics BOM Gerber
STEVAL-ISF003V1

Low standby losses power front-end with inrush current-limitation

Key Features

  • Fully electronic solution without the need for an inrush current limiter resistor and its bulky bypass electromechanical relay
  • DC bus disconnection at standby to reduce losses below 0.3 W
  • Inrush current compliance with IEC61000-3-3
  • Operation allowed with PFC (continuous or discontinuous)
  • Compliant with EN 55015, IEC 61000-4-11
  • Criteria A at 4 kV IEC 61000-4-5 and at 4 kV IEC 61000-4-4
  • RoHS compliant

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FEATURED RESOURCES

Schematics BOM Gerber
STEVAL-ISA147V3

500 W fully digital AC-DC power supply (D-SMPS) based on STM32F334C8 microcontroller

Key Features

  • Input AC voltage: 90 V to 264 V
  • Input AC frequency: 45 Hz to 65 Hz
  • Nominal power: 500 W
  • Output voltage: 12 V
  • Semi-Bridgeless PFC stage
  • DC-DC stage: resonant LLC with synchronous rectification
  • Peak efficiency: 94%
  • PFC switching frequency: 60 kHz
  • DC-DC switching frequency: 80 kHz to 115 kHz (burst mode above)
  • HF transformer isolation voltage: 4 kV
  • Cooling: natural convection up to 300 W, forced cooling above 300 W
  • PFC control: managed by STM32F051K8
  • LLC control: managed by STM32F334C8
  • Input short-circuit protection
  • Input under/overvoltage protection
  • Input under/overfrequency protection
  • DC Bus under/overvoltage protection
  • Output short-circuit protection
  • Output under/overvoltage protection
  • Overtemperature protection
  • RoHS compliant

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FEATURED RESOURCES

Schematics BOM Gerber
STEVAL-DPSTPFC1

3.6 kW PFC totem pole with inrush current limiter reference design using TN3050H-12WY and SCTW35N65G2V

Key Features

  • 97.5 % efficiency at full load
  • Max. 5 % THD at 10 % of full load
  • Compact PFC converter
  • Higher switching lifetime
  • Compliant with EMI norms at 4kV
  • RoHS compliant
  • WEEE compliant

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STEVAL-ISA172V2

2 kW fully digital AC-DC power supply (D-SMPS) evaluation board

Key Features

  • Input AC voltage: 90 V to 264 V
  • Output voltage: 48 V or 52 V, Max output current: 42 A
  • Input AC frequency: 45 Hz to 65 Hz
  • Nominal output power: 2 kW
  • Interleaved PFC stage
  • PFC switching frequency: 60 kHz
  • PFC Average current mode control
  • Cycle by cycle PFC current control
  • Maximum power factor: 0.99
  • DC-DC stage: full-bridge phase-shifted ZVS with synchronous rectification
  • DC-DC switching frequency: 100 kHz
  • Overall efficiency: 80 PLUS Platinum level
  • HF transformer isolation voltage: 4 kV
  • Forced cooling with air flow speed modulation according to the output power
  • Over-temperature protection
  • Output short-circuit protection
  • PFC control & DC-DC control: managed by STM32F334C8
  • PFC power stage based on MDmesh M2 Power MOSFETs and SiC Diodes
  • DC-DC power stage based on MDmesh DM2 Power MOSFETs
  • Synchronous rectification based on STripFET Power MOSFETs
  • Active clamp circuit based on MDmesh DM2 Power MOSFETs
  • EMC filter for noise reduction
  • RoHS compliant

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FEATURED RESOURCES

Schematics BOM Gerber
00 Files selected for download

Technical Documentation

    • Description Version Size Action
      AN5118
      12 V – 150 W power supply based on STNRG011 digital combo and SRK2001 adaptive synchronous rectifier controller
      1.0
      5.26 MB
      PDF
      AN4930
      500 W fully digital AC-DC power supply (D-SMPS) evaluation board
      1.0
      8.73 MB
      PDF
      AN2644
      An introduction to LLC resonant half-bridge converter
      2.0
      1.27 MB
      PDF
      AN4656
      Bootloading procedure for STLUX™ and STNRG™ digital controllers
      2.0
      635.41 KB
      PDF
      AN4689
      EVLSTNRG-1KW: 1 kW SMPS digitally controlled multiphase interleaved converter using the STNRG388A
      1.1
      5.33 MB
      PDF
      AN4720
      Half bridge resonant LLC converters and primary side MOSFET selection
      1.0
      1.4 MB
      PDF
      AN5119
      How to design an application from draft with STNRG011
      1.0
      343.37 KB
      PDF
      AN4671
      How to fine tune your SiC MOSFET gate driver to minimize losses
      1.1
      555.54 KB
      PDF
      AN2450
      LLC resonant half-bridge converter design guideline
      6.0
      746.74 KB
      PDF
      AN4406
      MDmesh™ M2: the new ST super-junction technology ideal for resonant topologies
      1.0
      652.78 KB
      PDF
      AN4789
      Monolithic Schottky diode in ST F7 LV MOSFET technology: improving application performance
      1.1
      1,006.7 KB
      PDF
      AN4242
      New generation of 650 V SiC diodes
      2.0
      4.75 MB
      PDF
      AN4856
      STEVAL-ISA172V2: 2 kW fully digital AC - DC power supply (D-SMPS) evaluation board
      1.0
      4.25 MB
      PDF
      AN4277
      Using STM32 device PWM shut-down features for motor control and digital power conversion
      4.0
      834.03 KB
      PDF
      AN5118

      12 V – 150 W power supply based on STNRG011 digital combo and SRK2001 adaptive synchronous rectifier controller

      AN4930

      500 W fully digital AC-DC power supply (D-SMPS) evaluation board

      AN2644

      An introduction to LLC resonant half-bridge converter

      AN4656

      Bootloading procedure for STLUX™ and STNRG™ digital controllers

      AN4689

      EVLSTNRG-1KW: 1 kW SMPS digitally controlled multiphase interleaved converter using the STNRG388A

      AN4720

      Half bridge resonant LLC converters and primary side MOSFET selection

      AN5119

      How to design an application from draft with STNRG011

      AN4671

      How to fine tune your SiC MOSFET gate driver to minimize losses

      AN2450

      LLC resonant half-bridge converter design guideline

      AN4406

      MDmesh™ M2: the new ST super-junction technology ideal for resonant topologies

      AN4789

      Monolithic Schottky diode in ST F7 LV MOSFET technology: improving application performance

      AN4242

      New generation of 650 V SiC diodes

      AN4856

      STEVAL-ISA172V2: 2 kW fully digital AC - DC power supply (D-SMPS) evaluation board

      AN4277

      Using STM32 device PWM shut-down features for motor control and digital power conversion

    • Description Version Size Action
      UM2088
      Getting started with the 2 kW fully digital AC-DC power supply (D-SMPS) evaluation board
      1.0
      1.3 MB
      PDF
      UM2064
      Getting started with the 500 W fully digital AC-DC power supply (D-SMPS) evaluation board
      1.0
      1.15 MB
      PDF
      UM2076
      Getting started with the STEVAL-ISF003V1
      2.0
      3.09 MB
      PDF
      UM2342
      Getting started with the STEVAL-PCC020V1: USB to I²C UART interface board and associated GUI for STNRG products
      1.0
      2.65 MB
      PDF
      UM2340
      STNRG011 NVM parameters description
      1.0
      612.53 KB
      PDF
      UM2088

      Getting started with the 2 kW fully digital AC-DC power supply (D-SMPS) evaluation board

      UM2064

      Getting started with the 500 W fully digital AC-DC power supply (D-SMPS) evaluation board

      UM2076

      Getting started with the STEVAL-ISF003V1

      UM2342

      Getting started with the STEVAL-PCC020V1: USB to I²C UART interface board and associated GUI for STNRG products

      UM2340

      STNRG011 NVM parameters description

Presentations & Training Material

    • Description Version Size Action
      L6699: Double-ended controller specific to series-resonant half-bridge topology 2.0
      430.88 KB
      PDF
      Power Factor Corrector controllers portfolio
      1.22 MB
      PDF
      ST 48V Conversion Solutions Overview about PSA and ST Products 2.0
      1.93 MB
      PDF
      Silicon-carbide diode product presentation 1.0
      1,022.79 KB
      PDF

      L6699: Double-ended controller specific to series-resonant half-bridge topology

      Power Factor Corrector controllers portfolio

      ST 48V Conversion Solutions Overview about PSA and ST Products

      Silicon-carbide diode product presentation

Publications and Collaterals

    • Description Version Size Action
      400/650 V MDmesh™ DM2: ST’s new MOSFET series with integrated fast-recovery body diode 1.0
      342.97 KB
      PDF
      500-650 V MDmesh™ M2: The New ST’s High Voltage Super-junction MOSFET Series 1.0
      720.83 KB
      PDF
      Field-Effect Rectifier Diodes Advantageously replace Schottky (60V and 100V) 1.0
      1.29 MB
      PDF
      Industrial-grade SiC diodes - 650V and low VF - to boost the performance of power converters 2.0
      958.23 KB
      PDF
      ST Diodes Finder : the new app for Android and iOS 2.0
      1.46 MB
      PDF
      STNRGPF01 - Shift into high gear with digital power 11.18
      714.28 KB
      PDF
      Turnkey PLC chipset for smart-energy infrastructure 10.2017
      775.07 KB
      PDF

      400/650 V MDmesh™ DM2: ST’s new MOSFET series with integrated fast-recovery body diode

      500-650 V MDmesh™ M2: The New ST’s High Voltage Super-junction MOSFET Series

      Field-Effect Rectifier Diodes Advantageously replace Schottky (60V and 100V)

      Industrial-grade SiC diodes - 650V and low VF - to boost the performance of power converters

      ST Diodes Finder : the new app for Android and iOS

      STNRGPF01 - Shift into high gear with digital power

      Turnkey PLC chipset for smart-energy infrastructure

    • Description Version Size Action
      Diodes and rectifiers selection guide 2.0
      815.09 KB
      PDF
      Linear and Switching Voltage Regulators Selection Guide 3.0
      370.88 KB
      PDF

      Diodes and rectifiers selection guide

      Linear and Switching Voltage Regulators Selection Guide

    • Description Version Size Action
      ST 48 V power conversion Turnkey solution for servers 03.2018
      6.02 MB
      PDF
      STM32F3 series - Mainstream 32-bit MCUs 17.09
      2.18 MB
      PDF
      VIPerPlus - Your SMPS design deserves a Plus 05.2018
      1.08 MB
      PDF
      VIPerPlus evaluation boards 05.2018
      1,002.52 KB
      PDF

      ST 48 V power conversion Turnkey solution for servers

      STM32F3 series - Mainstream 32-bit MCUs

      VIPerPlus - Your SMPS design deserves a Plus

      VIPerPlus evaluation boards

Development Tools

Embedded Software

    • Part Number

      Graphical user interface for the STEVAL-PCC020V1 USB to I²C/UART interface board for STNRG011

      STNRGPF01 programming tool

Power Management

Part number Description
L4984D CCM PFC CONTROLLER
L6491 High voltage high and low-side 4 A gate driver
PM8834 4 A dual low side MOSFET driver
STNRG388A Digital controller for power conversion applications with up to 6 programmable PWM generators, 96 MHz PLL
STNRGPF01 Three-channel interleaved CCM PFC digital controller
Part number
CCM PFC CONTROLLER
High voltage high and low-side 4 A gate driver
4 A dual low side MOSFET driver
Digital controller for power conversion applications with up to 6 programmable PWM generators, 96 MHz PLL
Three-channel interleaved CCM PFC digital controller