The input voltage of LM2576 is 40V, the input voltage of HV model is 60V, and the output is adjustable from 1.23V to 37V. The transformer can be selected according to the power.
LM2576 data manual analysis, circuit principle explanation, Lichuang EDA schematic diagram, PCB drawing, physical welding debugging and production.
Course viewing address: https://mp.weixin.qq.com/s/DZBcI0KlQatzlUsaHmhC2g
1 pin input voltage. Pin 2 output voltage. 3 pin power ground. 4-pin feedback input. 5-pin chip enable control.
5. Schematic diagram of homemade adjustable power supply
During the live broadcast, I accidentally touched the AC 220V during the test. I was thrilling and timid at the time. However, after investigation, the adjustment knob was not welded properly. After testing, the adjustable power output range is 1.2V to 30V. The load capacity needs to be tested later.
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