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In a two-transistor forward the two transistors of the primary are switched on and power is transferred to the secondary winding of the transformer and then to the output capacitor and the load. When switched off, the diodes in the primary clamp the peak voltages seen by the transistors at the input voltage and thus reduce stress at the same time.

The two-transistor forward topology is often used in server and telecom switch mode power supplies (SMPS) as a main stage DC-DC converter and in arc-welding equipment.

To help developers fully exploit the benefits of two-transistors forward converters, ST offers a range of power MOSFETs and rectifiers; high-voltage and galvanically isolated gate drivers; primary PWM and synchronous rectification controllers; as well as high-performance STM32 microcontrollers – with an extended range of dedicated peripherals including high-resolution PWM timers and high-speed ADCs – together with our hardware and software evaluation and development tools as well as reference designs.

All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      ST Diode Finder

      Active

      Diode product finder application for Android and iOS

      Finders Apps ST

      ST Voltage Regulator Finder

      Active

      Linear and switching voltage regulators and voltage reference applications for smartphones and tablets

      Finders Apps ST

      STPOWER MOSFET Finder

      Active

      STPOWER MOSFET finder mobile app for tablets and smartphones

      Finders Apps ST
      ST Diode Finder

      Description:

      Diode product finder application for Android and iOS
      ST Voltage Regulator Finder

      Description:

      Linear and switching voltage regulators and voltage reference applications for smartphones and tablets
      STPOWER MOSFET Finder

      Description:

      STPOWER MOSFET finder mobile app for tablets and smartphones

eDesignSuite

Converter

Input

V This option is required. And must be less than or equal to Volt. Max [V]
V This option is required. And must be greater than or equal to Volt. Min [V]

Output

V This option is required and must be a number.
A This option is required and must be a number.