I thought surely there must be a way to do it with simple, generic parts. My application, however, must allow for both constantly on and constantly off conditions. Worse yet for this application, nearly all the drivers I found require a toggling input waveform to run a charge pump and produce the output voltage to the switch gate. Even the ones I could find were expensive and required many additional components or were otherwise unsuitable. There are many dedicated available MOSFET gate drivers, but I shun proprietary or single-source solutions. The requirements of the application are a bit offbeat, and I found no standard off-the-shelf ICs that could meet the requirements, particularly the needed switching speed and the duty-cycle range from 0% to 100%. I needed a good, fast, and cheap way to drive the high-side MOSFET switch of a high-voltage supply rail in something that looks a bit like a buck switching regulator. Informed Analysis Picks Better 555 Timer To Drive Power MOSFET.Analyze MOSFET Parameter Shifts Near Maximum Operating Temperature.What's The Difference Between IGBTs And High-Voltage Power MOSFETs?.
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