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reference designINN3379C-H302 | Demoboard RDR-848

Power Integrations INN3379C-H302 | Demoboard RDR-848

Reference Design Report for a 42 W Dual Port Isolated Flyback Power Supply with 30 W USB PD 3.0 and 12 W USB-A Port Using InnoSwitchTM3-Pro PowiGaNTM INN3379C-H302

Overview

TopologyFlyback Converter
Input voltage90-265 V
Output 115 V / 2 A
Output 29 V / 3 A
Output 35 V / 2.4 A
Output 45 V / 3 A
Output 512 V / 2.25 A
Output 620 V / 1.5 A
IC revision1.4

Description

This engineering report describes a 42 W dual USB port switching power supply for wall outlet and power strip pad application. The main power supply is an isolated flyback controlled by InnoSwitcw3-Pro. It is designed to deliver 30 W USB PD 3.0 (USB Type-C) and at the same time, provide DC input supply for 5 V / 2.4 A output (USB Type-A) DC/DC converter.The DER board is designed to operate at input voltage range from 90 VAC to 265 VAC. InnoSwitch3-Pro is a highly integrated digitally controllable quasi-resonant flyback switcher IC designed for high efficiency USB PD 3.0 application. It integrates a highvoltage switch, primary and secondary side control and fluxLink feedback which simplifies the development of fully programmable, highly efficient power supplies, particularly those in compact enclosures. InnoSwitch3-Pro has built-in 3.3 V linear regulator that provides a bias supply for the microprocessor in stand-alone implementations. The IC uses the universal I2C interface that enables dynamic control of output voltage and current along with many configurable features.DER-848 offers low component count and heat sink-less design for compact enclosure applications. The key design goals were high efficiency and compact design.The document contains the power supply specification, schematic, bill of materials,transformer documentation, printed circuit layout, design spreadsheet, and performancedata.

Features

  • Dual USB charging ports
  • USB Type-C receptacle with USB PD 3.0
  • USB Type-A receptacle for standard USB charging
  • PowiGaN based InnoSwitch3-Pro
  • Highly integrated switcher IC with integrated high-voltage MOSFET, synchronous rectification andFluxLinkTM feedback
  • PowiGaN enables compact, heat sink-less design
  • Digitally controllable CV/CC via I2C interface enables the use of cost effective 8 pin PD controller IC
  • Low component count (73 pcs)
  • Up to 50 ºC ambient temperature operation
  • Meets DOE6 efficiency requirement
  • <75 mW System no-load input power
  • Integrated protection and reliability features
  • Output short-circuit protection for both USB ports
  • OVP, OCP and OTP protection

Typical applications

  • Wall Outlet, Power Strip and Surge Protector

More information

Products

Order Code Data­sheet Simu­lation Downloads Product seriesApplicationCVR
(V (AC))		Safety ClassdV/dt
(V/µs)		DF @ 1 kHz
(%)		RISOOperating TemperaturePitch
(mm)		L
(mm)		W
(mm)		H
(mm)		Packaging Samples
890324024003CSSPEC
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WCAP-FTX2 Film Capacitors Across the mains330 nF 275 X2 260 0.130 GΩ -40 °C up to +105 °C 12.5 15 8.5 14 Carton
Order Code Data­sheet Simu­lation
890324024003CSSPEC
Samples
Order Code Data­sheet Simu­lation Downloads Product seriesApplicationCVR
(V (AC))		Safety ClassdV/dt
(V/µs)		DF @ 1 kHz
(%)		RISOOperating TemperaturePitch
(mm)		L
(mm)		W
(mm)		H
(mm)		Packaging Samples