Build a Switching Regulator Circuit Diagram operating at 200Khz. This Switching Regulator Circuit Diagram provides a regulated dc with less than 100 mV of ripple for microprocessor applications. Necessary operating voltages are taken from the bleeder resistor network connected across the unregulated 28 V supply.
The output of the LM710 comparator (actually an oscillator running at 200 kHz) is fed through a leveNshifting circuit to the base of bipolar transistor Q2 This transistor is part of a bootstrap circuit necessary to turn the power MOSFET full on in totem-pole MOSFET arrays.
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