Resonant standby mode for LLCC load resonant power converters

A solution for efficient small volume power supplies is the use of high switching frequencies combined with zero voltage switching (ZVS). One topology for this is the LLCC converter. Cost effective solutions for many applications require the implementation of integrated standby operation. Standby operation here means the maintenance of basic control functions while the rest of the device is turned off. This article shows a new approach for this function without additional active components