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A DC-DC switching converter is used to locally supply any component or part of a system with the desired DC voltage and current. Depending on the application's relationship between the input and output voltage, engineers have to choose the best power topology – buck, boost, buck-boost or inverting, with or without synchronous rectification. Or they can decide to use an implementation based on monolithic ICs or with discrete power switches and controllers – or even an advanced digital implementation. Whatever their choice, the right semiconductor products are key to meeting their specific efficiency and size design targets.

ST’s broad product portfolio includes highly-integrated DC-DC converters, power MOSFETs and rectifiers, protection ICs, linear voltage regulators, and specifically designed digital controllers and STM32 microcontrollers. We also provide a comprehensive range of hardware and software evaluation and development tools including our eDesignSuite that helps engineers design high-efficiency DC to DC converters.

Boost Converter
Boost Converter
In a boost DC-DC converter, the output voltage is higher than the input voltage including in a floating boost topology...
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Buck Converter
Buck Converter
A buck or step-down topology is used in DC-DC switching converters where the output voltage is lower than the input with...
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Buck-Boost Converter
Buck-Boost Converter
In a buck-boost DC-DC converter topology, the output voltage can be higher or lower than the input voltage...
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Technical Documentation

    • Description Version Size Action
      AN5287
      170W high input voltage two switch flyback based on L6565 and 1500V K5 MOSFETs
      1.0
      2.8 MB
      PDF
      AN4656
      Bootloading procedure for STLUX™ and STNRG™ digital controllers
      3.1
      588.34 KB
      PDF
      AN5333
      SRK1001 adaptive synchronous rectification controller for flyback converters evaluation board family
      1.0
      1.75 MB
      PDF
      AN5287

      170W high input voltage two switch flyback based on L6565 and 1500V K5 MOSFETs

      AN4656

      Bootloading procedure for STLUX™ and STNRG™ digital controllers

      AN5333

      SRK1001 adaptive synchronous rectification controller for flyback converters evaluation board family

Publications and Collaterals

    • Description Version Size Action
      Linear and Switching Voltage Regulators Selection Guide 3.0
      370.88 KB
      PDF

      Linear and Switching Voltage Regulators Selection Guide

    • Description Version Size Action
      Low-dropout (LDO) linear voltage regulators Quick Reference Guide 2.1
      1.78 MB
      PDF
      Switching Converters (DC-DC) – Quick Reference Guide 2.0
      2.31 MB
      PDF

      Low-dropout (LDO) linear voltage regulators Quick Reference Guide

      Switching Converters (DC-DC) – Quick Reference Guide