Controller targets portable device chargers

30th January 2015
Posted By : Siobhan O'Gorman
Controller targets portable device chargers

Designed for portable electronic device chargers, the APR343 synchronous rectification controller has been introduced by Diodes Incorporated. To support a primary side control system, the device integrates a secondary side MOSFET driver with an output voltage detection function.

This circuit configuration, which utilises an external MOSFET, allows for synchronous rectification in discontinuous conduction mode operation by sensing the MOSFET drain-to-source voltage and providing a periodic signal to drive the MOSFET when the output voltage is lower than a certain threshold. By responding quickly to the secondary side voltage, the controller can improve the transient response of the primary side control system and reduce the power dissipation of the secondary side rectifier.

The APR343, which is provided with over-voltage protection and under-voltage lockout, features a design that minimises external components and is offered in a SOT25 package, allowing it to meet the power converter requirements of consumer and home appliances.

The APR343 is available now, priced at $0.35 each and sold in 1,000-piece quantities.


You must be logged in to comment

Write a comment

No comments

Sign up to view our publications

Sign up

Sign up to view our downloads

Sign up

European Microwave Week 2019
29th September 2019
France Porte De Versailles Paris
HETT 2019
1st October 2019
United Kingdom EXCEL, London
World Summit AI 2019
9th October 2019
Netherlands Taets Park, Amsterdam
New Scientist Live 2019
10th October 2019
United Kingdom ExCeL, London
GIANT Health Event 2019
15th October 2019
United Kingdom Chelsea Football Club Stadium, London