New 45 W Power Supply Design for USB PD 3.0 + PPS Charger

August 30th, 2018

A new design example report (DER-702) describes a 45 W USB PD 3.0 charger with 3.3 V–16 V PPS outputs using InnoSwitch3-Pro switcher IC and a Weltrend (WT6635P) USB PD controller. The ultra-efficient InnoSwitch3-Pro features digital micro-stepping of voltage and current for precise battery charge control, enabling this design to meet the PPS rapid-charging protocol while reducing system BOM.