# 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. 1. [CH224K Datasheet](https://datasheet.lcsc.com/lcsc/2204251615_WCH-Jiangsu-Qin-Heng-CH224K_C970725.pdf)