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Secondary Side Switch-Mode Power Supply Control Slide 34

In summary, STMicroelectronics has an integrated solution available for use in for CC/CV secondary side control for switch-mode power supplies for battery chargers and adapters. The TSM1013 is an example of a device that could be used in this type of application. Precise secondary side current control and voltage control loops make a more robust design possible by using Constant Current/Constant Voltage ICs. Synchronous rectification is used to increase power supply efficiency by reducing the losses associated with output rectification. SR replaces the typical Schottky rectifier with a MOSFET for the output rectification, this results in lower power losses. Examples of applications using the ST PM8834 to drive synchronous rectification MOSFETs are DC/DC bricks and telecom, or a PFC boost MOSFET in a large power supply.

PTM Published on: 2015-04-06