Future Technology Devices International Ltd. (FTDI Chip)

www.ftdichip.com

FT4233HP USB Type-C Charge-

Through Demo

The FT4233HP is a hi-speed USB bridge IC with a Type-

C controller supporting the latest USB Type-C and

Power Delivery standards. USB bridge function is

compatible with FT4232H – Quad high-speed USB to

multi-purpose UART/MPSSE bridge. The Type-C/PD

controller supports two Type-C ports, with PD1

configured as a power sink, or dual-role, and PD2 as

a sink.

The FT4233HP USB Type-C charge-through

application demonstrates how to control the

following modules using a notebook PC’s USB-C port

via a USB to MPSSE/UART/GPIO function, while the

notebook remains charged.

1) an ambient light sensor

2) a distance sensor with buzzer

3) a BT/BLE module for wireless communication

via phone/tablet

In this demo setup, the PD1 is connected to the

USB-C port of the notebook, sinking power at

5V while sending sensor data and phone

messages via USB data transfer to the

notebook.

When the USB-C charger on PD2 is turned ON,

PD1 switches to power sourcing and charges

the notebook battery. When the USB-C charger

on PD2 is turned OFF, the PD1 switches to

sinking power again. The USB-C meter monitors

and displays voltage and current of the

charging/discharging.