Given that the output voltage is 12V and the maximum input voltage is 42V, find the value of L1.
According to BUCK MODE, L1=（12*(42-12））/（42*300000*1.2）
The document says L1=28UH, but no matter how I ...
1. After drawing the schematic diagram and making the board, directly power on 24V. No 5V output is seen from V5M, that is, D17 light is not on, which means the chip is not working.
2 Is there any off...
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