Power Integrations has described the design of a 92%-efficient power supply for LED streetlight applications which uses its HiperPLC power supply controller.

The HiperPLC is designed to control AC-DC converters from 80 to 600W.

Combining the PFC and LLC controllers into a single device, the IC provides up to 0.99 power factor and features synchronisation of PFC and LLC controllers.

Synchronization reduces the ripple in the bulk capacitors, which reduces capacitor operating temperature and significantly extends the life of the power supply.

The design is available at the company website.

More information: www.powerint.com