VRP1-30E1 power module adapter board

A 10 yuan (at least when I bought it) 30A 150W step-down module, four-way MOS, very cost-effective, because it has a 2.0-foot pitch, and requires an external circuit (although it is very simple) to use, so draw an adapter board more convenient

*The power module DataSheet is in the attachment, please pick it up yourself.

Real shots, the module is cool and the materials used are sufficient

Important note: The set resistors on the board I drew are set for 5V output and can be modified according to your own needs.

(There are a lot of beatings. If necessary, you can do it. But now I can get prostitutes to make samples, so I think I can do it myself.

Now the open source is V4.0. I drew a double-layer board at the beginning, but later found that four-layer boards can also be used, so I changed it to a four-layer board and made it open source (but later only the four-layer board solution was optimized, so it is not recommended to use it. double layer)

The thick copper on the surface carries large currents, and the signal travels on the inner layer, so that the surface looks good (bushi

The board is equipped with a start switch and an en pin, which can be turned on manually (the starting method shown is not standardized, but it can be used. For the standardized starting method, see the screenshot of the data manual, which is the picture above) or external electronic control.

The set enable pin is in the input interface and the powergood pin is in the output interface, which is more in line with the design logic.

An internal and external compensation switch is set. When there is no external voltage measurement input, please switch to internal to avoid module abnormalities. (The module has a line voltage drop compensation function, which is a very practical function for large current power supply. Please refer to the data sheet for details.

The board I drew before was not very mature (I still drew it wrong in V1.0) . After the guidance of Boss Zhu, it has been optimized (made a four-layer board and used a copper laying plan). Thank you very much! ( There are no high-current modules. plate making experience, welcome all the experts to optimize and reprint

The conditions of the studio are limited and there is no higher load. I can't run this load even if it is above 22A. If you have the conditions, you can use a higher load for testing. I saw in the comment area of ​​a certain treasure that it was pulled to 22A. 2 million

It is recommended to tin plating or even bury the copper bars on the surface. It is always a good thing to reduce the resistance (it is not completely tinned here , just to give a hint)

You can refer to the data sheet for the output capacitance, but the manual does not mention the input capacitance.

Supplementary V2.0 board and test diagram (also pulled to 100w), all tests use 14AWG wire

Finally, here is the reference picture provided by the Taobao seller (I recommend reading the data sheet, this is just a trouble-free wiring solution

Other additional notes:

1. The actual measured power is 1.68w under no-load condition. It will become very hot after a long time (it will be hot to the touch. It is recommended to add active heat dissipation).

2. All the above experimental data were obtained with good heat dissipation (using a 14cm fan), and all used 14AWG wires.

3. The installation method I designed requires extending the original pins in reverse or bending all the pins downward at 90° (just because of my obsessive-compulsive disorder

4. Created a communication group: 1016193632

5. Add more as you think of it