Power Integrations has releases new high-power-density members of its LYTSwitch-6 family of safety-isolated LED-driver ICs for smart-lighting applications.

The ICs with PowiGaN technology are able to support designs that deliver up to 110W with 94% conversion efficiency using a simple, flexible flyback topology.

The high efficiency of the LYTSwitch-6 ICs eliminates the need for heatsinks – greatly reducing ballast size, weight and cooling airflow requirements.

The 750 V PowiGaN primary switches provide very low RDS(ON) and reduced switching losses. This improvement, combined with existing LYTSwitch-6 features, increases power conversion efficiency by up to 3% compared to conventional solutions – reducing wasted heat by more than one-third.

The ICs with PowiGaN technology employ lossless current sensing, which contributes to the higher efficiency. The new family members retain existing benefits such as fast transient response, which facilitates excellent cross regulation for parallel LED strings without the need for additional regulator hardware, and flicker-free system operation.

This allows simple implementation of a pulse-width-modulation (PWM) dimming interface.