Texas Instruments UCC24610 green rectifier controller

Texas Instruments has introduced a power management controller and driver for standard and logic-level N-channel MOSFETs used for low-voltage, secondary-side synchronous rectification.

The UCC24610 green rectifier controller is claimed to improve power supply efficiency by 5%, and reduces primary-side power loss in 5 V AC/DC adapters and bias supplies.

The 600 kHz device provides power-saving features and design flexibility not available from traditional diode rectifiers. Its micro-sleep current, automatic light-load management and synchronous wake-up features help maximise efficiency.

The controller uses drain-to-source voltage sensing to support flyback and LLC resonant converters, as well as other power architectures, to give designers greater flexibility.

Features include: small size and minimal external component count; high performance and efficiency: micro-power sleep current, automatic light-load management and synchronous wake-up from light-load conditions; system protection - device will shut down MOSFET if short or excessive ‘on time’ occurs; design flexibility - can be biased directly for a 5 V output without external regulator.