8-100V to 5V-1A DC to DC Buck Converter using MP9486
DC-to-DC buck converters are utilized ubiquitously in electronic devices. Three major types of non-isolated DC-to-DC converters are introduced: Buck, Boost, and Buck-Boost. The most frequently employed type is the Buck converter. In this article/video, I introduce a compact buck converter board, capable of accepting input voltages ranging from 8V to 95V and handling 5V-1A at the output.
The selected controlling chip is the MP9486. It is a high-frequency and somewhat sensitive controller chip as some users reported encountering instability issues. However, I have applied a few modifications to the circuit and as a result, you can utilize this circuit, PCB, or assembled board without any issues. The circuit offers consistent regulation within the defined input voltage range, effectively managing the maximum output current.
I tested the circuit's performance for a range of input voltage, output current, stability, and output noise. This comprehensive testing was conducted using the Siglent SDL1020X-E DC Load, the SDM3045M multimeter, and the SDS2102X Plus oscilloscope.
I am confident that this circuit fulfills your requirements for a compact high-voltage buck converter board.
More details please check here:
8-100V to 5V-1A DC to DC Buck Converter using MP9486
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