ST STEVAL-USBPD45H Schematic Diagrams

USB Power Delivery (Type-C PD) 45 W USB wall power adapter

Features


USB wall power adapter input: 85 V
264 V
AC

USB voltage output: 5 V, 9 V and 15 V

Current limit: 3 A for all voltage level profiles

Load power limited to 45 W

Cable compensation

Isolated quasi-resonant flyback

Efficiency 90% (approx.)

USB Type-C Power Delivery compatible

USB-IF certified
November 2017
For further information contact your local STMicroelectronics sales
office
solution based on STCH02 and STUSB4700
to
AC
DocID031047 Rev 2
STEVAL-USBPD45H

Description

This board has been physically tested and
validated; it is not for sale.
This USB Power Delivery wall adapter is a USB-
IF certified solution with a 45 W isolated power
supply with USB Power Delivery controller.
This USB Type-C PD wall power adapter design
is for universal line voltage applications based on
the STCH02 Primary controller and STUSB4700
USB PD controller.
The 5 V, 9 V and 15 V USB output voltage
profiles all have a 3 A rating.
The offline power supply is implemented in an
isolated flyback topology based on the STCH02
quasi-resonant controller with ultra-low standby
power consumption. The USB Power Delivery
(PD) is managed by the STUSB4700 and is
Type-C compatible: power negotiation, Vbus
discharge, protections, etc. are entirely managed
by the IC.
The USB power supply architecture connects a
power board with a controller board. This design
optimizes the form factor and lets you scale the
power section up or down to suit different USB
Power Adapter applications.
Data brief
1/5
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