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CH224K USB PD Decoy

STDCH224K USB PD Decoy

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CC-BY-SA 3.0

Creation time:2022-08-06 14:54:58Update time:2023-09-26 12:39:34

Description

USB Power Delivery Decoy (CH224K)

With the USB-PD Decoy, a USB-C power adapter can be used as a power supply with the option of selecting different output voltages via DIP switches. It is based on the cheap and easy-to-use CH224K multi-fast charging protocol power receiving chip.

USB-PD_Decoy_CH224K_pic1.jpg

The CH224K integrates multiple fast charging protocols such as USB PD3.0/2.0, BC1.2 and other boost fast charging protocols on a single chip. It features:

  • 4V to 22V input voltage
  • PD3.0/2.0, BC1.2 and other fast charging protocols
  • USB Type-C PD, positive and negative insertion detection and automatic switching
  • E-Mark simulation, automatically detect VCONN, support 100W power PD request
  • requested voltage can be dynamically adjusted through a variety of methods
  • high integration of single chip, simplified peripheral and low cost
  • built-in over-voltage and over-temperature protection module

The output voltage can be selected via the DIP switches as follows:

Output VoltageSW1SW2SW3
5V0--
9V111
12V110
15V100
20V101

The Power-Good LED lights up when the selected voltage has been successfully negotiated with the USB-C power adapter and is present at the output. The voltage can also be changed during operation.

  1. CH224K Datasheet

Design Drawing

schematic diagram
PCB

BOM

IDNameDesignatorFootprintQuantity
11uC1C_06031
2GT-USB-7010ASVCN1USB-C-7010ASV1
3KF301-2PCN2KF301-2P1
4PWRLED1LED_0603_S1
510kR1,R3,R4,R506034

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