Synchronous rectification ICs simplify SMPS applications

28th June 2016

Nat Bowers

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Expanding the company's product offering for SMPS applications, Infineon announces the IR1161L and IR11688S Secondary Synchronous Rectification (SSR) controller ICs.

The IR1161L and IR11688S meet the new 2016 standards set by the U.S. Department of Energy and the “European Code of Conduct for Energy Efficiency in Data Centre” which demand a 1 to 3% efficiency improvement over previous requirements. Taking 2% saving as an average for new adapters, US adult notebook users alone can save 525GWh per year - which is enough to power New York City for at least 40 days.

Together with Infineon’s best in class energy saving OptiMOS and StrongIRFET MOSFETs, this family of SSR ICs provides a simple solution for SMPS while improving the overall efficiency. The IR1161L is targeted for flyback SMPS in chargers and adapters while the IR11688S is targeted for LLC SMPS in televisions, desktops, silver boxes and micro-servers.

Both, the IR1161L and IR11688S offer 200V direct sensing which eliminates the need for external voltage dividers. The family also features programmable MOT (Minimum On Time) ensuring reliable operation from no-load to full-load. The low quiescent current capability meets the standby requirements of the new 2016 efficiency standard in the industry.

Volume production of the IR1161L and IR11688S is underway.