Power Integration

Demoboard DER-703

27 W USB PD 3.0 with 3.3 V-11 V PPS Power Supply Using InnoSwitch3-Pro and Weltrend WT6635P Controller

Topologie: Flyback
Eingangsspannung (min.): 85.00 V
Eingangsspannung (max.): 265.00 V
Ausgang 1: 5.00 V / 3.000 A

Erstveröffentlichung am 05.09.2018, Version 1.0


This document is an engineering report describing a 5 V / 3 A, 9 V / 3 A USB PD PPS power supply. This power supply uses InnoSwitch3-Pro INN3366C IC and Weltrend WT6635P USB PD controller. This design shows the high power density and efficiency that is possible due to the high level of integration of the InnoSwitch3-Pro controller providing exceptional performance.


  • InnoSwitch3-Pro
  • digitally controllable CV/CC QR flyback switcher IC with integrated highvoltageMOSFET, synchronous rectification and FluxLink feedback
  • I2C Interface enables low pin count USB PD Controller (10 pin)
  • Sophisticated telemetry and comprehensive protection features
  • USB PD 3.0 with using PPS. Highly optimized low pin count USB PD Controller WT6635P
  • All the benefits of secondary-side control with the simplicity of primary-side regulation
  • Insensitive to transformer variation
  • Meets DOE6 and CoC V5 2016 efficiency requirement (>1% efficiency margin)
  • Micro stepping of voltages (20 mV) and CC thresholds (50 mA) in compliance with PPSprotocol
  • Output overvoltage and overcurrent protection
  • Integrated thermal protection
  • <25 mW no-load input power


  Artikel Nr. SPEC Produktserie Anwendung Interface typ Typ Gender Pins Montageart Arbeitsspannung
(V (DC))
Verpackung Muster
632723300011 PDF WR-COM USB 3.1 Type C Receptacle Horizontal THR / SMT USB 3.1 Type C Horizontal Receptacle 24 THR 20 Tape and Reel

Weitere Anwendungen und Artikel von Würth Elektronik zu diesem IC

  • INN3366C-H301
    Topologie: Flyback, Eingangsspannung (min.): 85.00 V, Eingangsspannung (max.): 265.00 V, Ausgang 1: 9.00 V / 3.000 A