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CH224K USB PD Decoy
STDCH224K USB PD Decoy
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License
: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.
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 Voltage | SW1 | SW2 | SW3 |
---|---|---|---|
5V | 0 | - | - |
9V | 1 | 1 | 1 |
12V | 1 | 1 | 0 |
15V | 1 | 0 | 0 |
20V | 1 | 0 | 1 |
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.
Design Drawing
schematic diagram
PCB
BOM
ID | Name | Designator | Footprint | Quantity |
---|---|---|---|---|
1 | 1u | C1 | C_0603 | 1 |
2 | GT-USB-7010ASV | CN1 | USB-C-7010ASV | 1 |
3 | KF301-2P | CN2 | KF301-2P | 1 |
4 | PWR | LED1 | LED_0603_S | 1 |
5 | 10k | R1,R3,R4,R5 | 0603 | 4 |
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