We have made a batch of samples now, the power supply is for 5V, but now there is a problem that the 5V power supply will burn the circuit behind me if the 5V power is soldered backwards. May I ask if you have any solutions, my friend said that a diode is connected to the 5V input string , It is also said that a diode is connected. There are more complicated things not to mention.
How can I do it? If it works, what model should I add? Eat 200MA current behind.
Ivey Veröffentlicht am August 5, 2020
Just string an ordinary diode at the input end, pay attention to whether the forward voltage drop will affect the voltage you need to use later, 200mA current, choose an If=500mA or so.
Aly Veröffentlicht am August 5, 2020
The voltage drop of the diode is too large, it is recommended to string MOS to prevent reverse connection.
Adi Veröffentlicht am August 5, 2020
Yes, 200mA, Schottky diodes will do.
