ch224k Simple trick to lure 9v, 12v

I previously made a bunch of LED lights that required a 12V power supply. Buying a 12V power supply online was quite expensive, and considering the various 12V requirements, I decided to experiment with creating my own 12V power supply.
I went through three versions based on different ideas, and actually, the first version was successful.
For instructions on the CH224K, please refer to the official documentation. The following points require special attention:
1. An LED was added to indicate the power-on status using VDD current; it's unclear if this is actually a problem.
2. The official documentation states that different resistors can induce different voltages, supporting 9, 12, 15, and 20V, but not 5V. The 20V design is quite unusual and counterintuitive. Therefore, a non-resistive MCU control mode was used to generate 5V using VDD current.
3. The inexpensive charger I bought only supports 66W and cannot induce voltages above 12V. Therefore, a higher-power charger is needed for 15V and 20V.
4. Inducing 5V, 9V, and 12V was successful.
5. A toggle switch was used. This component is somewhat expensive. Due to the CH224K's own design, if no toggle is used and the charger supports it, it defaults to inducing 20V (12V on my charger). If all toggle switches are used, it defaults to 5V.
6. This small module verified that my car charger actually supports PD output fast charging, but my phone is restricted, so it can't fast charge.
 
 
 
Theoretically, this small PCB should also have a DC converter, but the accessories are too expensive, so I cried. Later, I changed it to a 2P connector. A side
 
 
note: using solder paste on a Type-C connector by hand is too easy to cause sticking, wasting a board.