Power management

Synchronous rectifier controllers

Improve your efficiency with easy-to-use, high performance synchronous rectifiers

VDS sensing synchronous rectifier

Measures voltage across SR FET to determine when to turn on and off. Find the product that works best with your topology:

  • CCM, DCM, QR flyback
  • Active clamp flyback
  • Forward, active clamp forward
  • Half bridge, full bridge
  • LLC

Volt second synchronous rectifier

Timing circuit based on magnetic balancing to determine when to turn on and off. Explore the following topologies for our products.

  • DCM flyback
  • CCM flyback

Featured reference designs and tools

5V/2.5A AC/DC flyback PSU for USB adaptor applications reference design

The PMP8965 is a 12.5W USB adapter reference design using the UCC28740 quasi-resonant/discontinues flyback controller, with synchronous rectification to improve efficiency using the UCC24610 green rectifier controller.

Synchronous rectifier controller diode-replacement demonstration board

The UCC24612-1EVM evaluation module (EVM) is used to convert the output rectifier of a flyback converter from a diode to a synchronous rectifier (SR) FET to investigate and evaluate the efficiency benefits of using an SR over a rectifier diode.

USB-IF certified USB Type-C™ 20V/60W out, universal AC input reference design

This power reference design provides up to 20 V/60 W over USB Type-C from a universal AC input range of 85 to 265 VAC for charger applications. The UCC24636 synchronous rectifier driver allows this design to provide 91% average efficiency. 

Companion devices

High performance active clamp flyback controller

Wide vin LLC resonant controller with high-voltage start up enabling ultra-low standby power

Constant-voltage, constant-current flyback controller using opto-coupler feedback

Off-line constant-voltage constant-current flyback controller with primary-side regulation (PSR)