Save to MyST

Buck Converter

Overview
Documentation
Tools and Software
HW Evaluation Tools
Solutions
Key Products
A buck or step-down topology is used in DC-DC switching converters where the output voltage is lower than the input with or without input-output isolation. Read more

Our products and solutions

We have a large offer of buck converter ICs - with integrated power switches – and multi-phase, single-phase, multi-output controllers providing a wide range of features including soft start to minimize inrush current and power-good to enable power-up sequencing. Programmable devices are also available to help design buck converters fine-tuned for specific EMI, EMC, efficiency and power density targets and use cases. 

We have also developed an isolated, single-stage direct 48 V to the Point-of-Load (PoL) resonant, conversion solution for use in CPUs or DDR memories compliant with Intel VR13 and VR12.5 specifications. ST also offers a fully scalable solution for up to 6 interleaved cells with dynamic cell shedding and pulse skipping features. 

In addition, we have a comprehensive set of evaluation and development tools as well as reference designs to help compress time to market.

All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      ST Diode Finder

      Active

      Diode product finder application for Android and iOS

      Finder Apps ST
      ST Diode Finder

      Description:

      Diode product finder application for Android and iOS

All Hardware Evaluation Tools

    • Part Number
      Description
      Core product
      Tool Type
      Supplier
      Sort by: part number

      AEK-POW-L5964V1

      Active

      Digitally controlled DC-DC converter with L5964 for automotive applications

      L5964 Automotive IC Eval Boards ST
      AEK-POW-L5964V1
      Active

      Digitally controlled DC-DC converter with L5964 for automotive applications

      STEVAL-1PS01AJR

      Active

      Evaluation board based on ST1PS01AJR 400 mA nano-quiescent synchronous step-down converter

      - PSU and Converter Solution Eval Boards ST
      STEVAL-1PS01AJR
      Active

      Evaluation board based on ST1PS01AJR 400 mA nano-quiescent synchronous step-down converter

      STEVAL-1PS01DJR

      Active

      Evaluation board based on ST1PS01DJR 400 mA nano-quiescent synchronous step-down converter

      - PSU and Converter Solution Eval Boards ST
      STEVAL-1PS01DJR
      Active

      Evaluation board based on ST1PS01DJR 400 mA nano-quiescent synchronous step-down converter

      STEVAL-1PS01EJR

      Active

      Evaluation board based on the ST1PS01EJR 400 mA nano-quiescent synchronous step-down converter

      - PSU and Converter Solution Eval Boards ST
      STEVAL-1PS01EJR
      Active

      Evaluation board based on the ST1PS01EJR 400 mA nano-quiescent synchronous step-down converter

      STEVAL-1PS02A

      Active

      Evaluation board based on ST1PS02AQTR 400 mA nano-quiescent synchronous step-down converter with AUX switch

      - PSU and Converter Solution Eval Boards ST
      STEVAL-1PS02A
      Active

      Evaluation board based on ST1PS02AQTR 400 mA nano-quiescent synchronous step-down converter with AUX switch

      STEVAL-1PS02B

      Active

      Evaluation board based on ST1PS02BQTR 400 mA nano-quiescent synchronous step-down converter with AUX switch

      - PSU and Converter Solution Eval Boards ST
      STEVAL-1PS02B
      Active

      Evaluation board based on ST1PS02BQTR 400 mA nano-quiescent synchronous step-down converter with AUX switch

      STEVAL-1PS02C

      Active

      Evaluation board based on ST1PS02CQTR 400 mA nano-quiescent synchronous step-down converter with AUX switch

      - PSU and Converter Solution Eval Boards ST
      STEVAL-1PS02C
      Active

      Evaluation board based on ST1PS02CQTR 400 mA nano-quiescent synchronous step-down converter with AUX switch

      STEVAL-1PS02D

      Active

      Evaluation board based on ST1PS02DQTR 400 mA nano-quiescent synchronous step-down converter with AUX switch

      - PSU and Converter Solution Eval Boards ST
      STEVAL-1PS02D
      Active

      Evaluation board based on ST1PS02DQTR 400 mA nano-quiescent synchronous step-down converter with AUX switch

      STEVAL-1PS03A

      Active

      Evaluation board based on ST1PS03AQTR 400 mA nano-quiescent synchronous step-down converter with load switch

      - PSU and Converter Solution Eval Boards ST
      STEVAL-1PS03A
      Active

      Evaluation board based on ST1PS03AQTR 400 mA nano-quiescent synchronous step-down converter with load switch

      STEVAL-ISA043V2

      Active

      1.5 A / 3.3 V high frequency synchronous buck converter demonstration board based on the ST1S06

      - DC-DC Converter ST
      STEVAL-ISA043V2
      Active

      1.5 A / 3.3 V high frequency synchronous buck converter demonstration board based on the ST1S06

      STEVAL-ISA055V1

      Active

      0.7 A / 1.2 V synchronous buck converter with enable function based on the ST1S12XX

      - DC-DC Converter -
      STEVAL-ISA055V1
      Active

      0.7 A / 1.2 V synchronous buck converter with enable function based on the ST1S12XX

      STEVAL-ISA069V1

      Active

      3 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S31 in DFN 3x3 package

      ST1S31 DC-DC Converter -
      STEVAL-ISA069V1
      Active

      3 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S31 in DFN 3x3 package

      STEVAL-ISA082V1

      NRND

      4 A peak 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40IPHR

      - DC-DC Converter -
      STEVAL-ISA082V1
      NRND

      4 A peak 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40IPHR

      STEVAL-ISA094V1

      Active

      3 A step-down switching power supply demonstration board based on the L7981 (HSOP8)

      - DC-DC Converter -
      STEVAL-ISA094V1
      Active

      3 A step-down switching power supply demonstration board based on the L7981 (HSOP8)

      STEVAL-ISA095V1

      Active

      Up to 3 A step-down switching regulator based on the ST1S14

      ST1S14 DC-DC Converter ST
      STEVAL-ISA095V1
      Active

      Up to 3 A step-down switching regulator based on the ST1S14

      STEVAL-ISA099V1

      Active

      3 A step-down switching demonstration board based on the L7986 in DFN10 package

      L7986 DC-DC Converter -
      STEVAL-ISA099V1
      Active

      3 A step-down switching demonstration board based on the L7986 in DFN10 package

      STEVAL-ISA152V1

      Active

      3.3 V/3 A high efficiency step down DC-DC converter (VIN= 4.5 to 60 V) based on the L7987

      L7987 DC-DC Converter -
      STEVAL-ISA152V1
      Active

      3.3 V/3 A high efficiency step down DC-DC converter (VIN= 4.5 to 60 V) based on the L7987

      STEVAL-ISA158V1

      Active

      38 V - 2 A synchronous step-down switching regulator evaluation board based on the A6986

      A6986 DC-DC Converter ST
      STEVAL-ISA158V1
      Active

      38 V - 2 A synchronous step-down switching regulator evaluation board based on the A6986

      STEVAL-ISA205V1

      Active

      38 V, 2 A synchronous step-down switching regulator evaluation board based on the A6986H

      A6986H Automotive IC Eval Boards ST
      STEVAL-ISA205V1
      Active

      38 V, 2 A synchronous step-down switching regulator evaluation board based on the A6986H

      STEVAL-ISA207V1

      Active

      3 A step down DC/DC switching regulator (VIN = 4.5 V to 60 V) based on the A7987

      A7987 Automotive IC Eval Boards ST
      STEVAL-ISA207V1
      Active

      3 A step down DC/DC switching regulator (VIN = 4.5 V to 60 V) based on the A7987

      STEVAL-ISA208V1

      Active

      38 V, 3 A synchronous step-down switching regulator evaluation board based on the L6983CQTR

      - DC-DC Converter ST
      STEVAL-ISA208V1
      Active

      38 V, 3 A synchronous step-down switching regulator evaluation board based on the L6983CQTR

      STEVAL-ISA209V1

      Active

      38 V, 3 A synchronous step-down switching regulator evaluation board based on the L6983NQTR

      L6983 DC-DC Converter ST
      STEVAL-ISA209V1
      Active

      38 V, 3 A synchronous step-down switching regulator evaluation board based on the L6983NQTR

      STEVAL-L6981CDR

      Active

      38 V, 1.5 A synchronous step-down switching regulator evaluation board based on the L6981CDR

      - PSU and Converter Solution Eval Boards ST
      STEVAL-L6981CDR
      Active

      38 V, 1.5 A synchronous step-down switching regulator evaluation board based on the L6981CDR

      STEVAL-L6981NDR

      Active

      38 V, 1.5 A synchronous step-down switching regulator evaluation board based on the L6981NDR

      - PSU and Converter Solution Eval Boards ST
      STEVAL-L6981NDR
      Active

      38 V, 1.5 A synchronous step-down switching regulator evaluation board based on the L6981NDR

      STEVAL-L6982CDR

      Active

      38 V, 2 A synchronous step-down switching regulator evaluation board based on the L6982CDR

      - PSU and Converter Solution Eval Boards ST
      STEVAL-L6982CDR
      Active

      38 V, 2 A synchronous step-down switching regulator evaluation board based on the L6982CDR

      STEVAL-L6982NDR

      Active

      38 V, 2 A synchronous step-down switching regulator evaluation board based on the L6982NDR

      - PSU and Converter Solution Eval Boards ST
      STEVAL-L6982NDR
      Active

      38 V, 2 A synchronous step-down switching regulator evaluation board based on the L6982NDR

      STEVAL-L6986IV1

      Active

      38 V, 5 W synchronous iso-buck converter evaluation board with dual isolated output based on the L6986I

      L6986I PSU and Converter Solution Eval Boards ST
      STEVAL-L6986IV1
      Active

      38 V, 5 W synchronous iso-buck converter evaluation board with dual isolated output based on the L6986I

      STEVAL-L7983ADJ

      Active

      12 V/0.3 A step down DC/DC converter (VIN = 12 to 60 V) based on the L7983PUR regulator

      - PSU and Converter Solution Eval Boards ST
      STEVAL-L7983ADJ
      Active

      12 V/0.3 A step down DC/DC converter (VIN = 12 to 60 V) based on the L7983PUR regulator

      STEVAL-L7983V33

      Active

      3.3 V/0.3 A step down DC/DC converter (VIN = 3.5 V to 60 V) based on the L7983PU33R

      - PSU and Converter Solution Eval Boards ST
      STEVAL-L7983V33
      Active

      3.3 V/0.3 A step down DC/DC converter (VIN = 3.5 V to 60 V) based on the L7983PU33R

      STEVAL-L7983V50

      Active

      5.0 V / 0.3 A step down DC/DC converter (VIN = 5 to 60 V) based on the L7983PU50R regulator

      - PSU and Converter Solution Eval Boards ST
      STEVAL-L7983V50
      Active

      5.0 V / 0.3 A step down DC/DC converter (VIN = 5 to 60 V) based on the L7983PU50R regulator