STMICROELECTRONICS SIMPLIFIES HIGH-EFFICIENCY TWO-PORT USB-PD ADAPTERS WITH ST-ONEMP DIGITAL CONTROLLER

STMicroelectronics is extending its highly integrated and power-saving ST-ONE family of USB Power Delivery (USB-PD) digital controllers by introducing the ST-ONEMP, which supports two power outputs.

The ST-ONEMP builds on the market-first ST-ONE architecture combining an Arm^® Cortex^®-M0+ microcontroller, energy-efficient non-complementary active clamp flyback controller, and USB-PD 3.1 interface in a single package.

The ST-ONEMP pairs with ST’s MasterGaN power technology, which contain ST’s gallium nitride (GaN) wide-bandgap power transistors with integrated gate drivers. ST’s GaN technology permits superior switching at higher frequencies than conventional silicon MOSFETs, enabling adapters to deliver greater power density with high energy efficiency meeting the latest ecodesign codes.

ST has produced the EVLONEMP reference design leveraging ST-ONEMP and MASTERGAN4 to create a 65W + 10W AC/DC adapter at comparable weight and volume to a 20W single-port smartphone charger. Peak efficiency, at 94%, is 2% higher than comparable conventional 2-port adapters, while the PCB area is a quarter of the size. OEMs can thus deliver more environmentally friendly products that save energy and cut the use of plastics by enabling smaller enclosure sizes.

The ST-ONEMP is available now in an SSOP36 package, priced from $3.89 for orders of 1000 pieces.