It can be used from 3.3 to 12V, and the output current is not large. The 170V output can be stable at 8 or 9mA at most, and can output a larger current (25mA) in a short time.
Two PCB versions, one with adjustable output voltage and one with fixed output 170V (approximately 172V)
One leg of the three-pin inductor is long and is connected to the SW pin of the power chip.
Inductor link https://item.taobao.com/item.htm?spm=a1z09.2.0.0.cacb2e8dyAegYn&id=589697913491&_u=52fq3g8s8274
Inductor selection picture
Low efficiency, low efficiency, low efficiency, the cost of a single module is cheaper than the transformer solution, and the other advantages are gone. . .
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