Synchronous rectification ICs meet data centre efficiency requirements

Two secondary synchronous rectification (SSR) controller ICs, the IR1161L and IR11688S, meet the 2016 standards set by the US Department of Energy and the European Code of Conduct for Energy Efficiency in Data Centre, which demand a one to three per cent efficiency improvement over previous requirements. Taking two per cent saving as an average for new adapters, US adult notebook users alone can save 525GWh per year, says the company, enough to power New York City for at least 40 days.

The IR1161L is targeted for flyback switch mode power supplies (SMPS) in chargers and adapters. The IR11688S is targeted for LLC SMPS in televisions, desktops, silver boxes and micro-servers.

Both ICs offer 200V direct sensing which eliminates the need for external voltage dividers. The family also features programmable 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 two ICs has started.


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