How to solve the problem when the output voltage of the bare board power supply block is too low
The output voltage is too high or too low is not good, today we talk about how to solve the problem of too low output voltage. The output voltage will cause all the system software can not be all normal, when the voltage is too low, the light bulb is not bright or dark, must not consider everyone's must. If the voltage is too low for a long period of time, the service life of the power supply circuit will be greatly reduced, then how to solve this problem?
First assume that the product is good, according to the testing standards obtained by the manufacturer to carry out testing, if there are still problems, most of which can be identified as caused by shoddy goods, first let us analyze what causes the output voltage is too low, so that we can give the appropriate drug.
Bare board power supply
Low input voltage or insufficient output power; The output line is too long or too thin, resulting in excessive line loss;
The pressure drop of the reverse diode at the input end is too large;
The input filter inductance is too large.
How do you solve these four reasons? Let us discuss this path.
Adjust the wiring, increase the total area of the transmission line or reduce the length of the wire, reduce the internal resistance;
Replace the diode with a small power switch pressure drop; Reduce the internal resistance of the filter inductor or inductor.
