DC/DC Converter Controller Using a PICmicro Controller

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2000 Microchip Technology 1AN216INTRODUCTIONIn many applications, a DC/DC Converter is used toproduce a regulated voltage or current, derived from anunregulated power supply, or from a battery. Examplesof these applications include battery chargers, elec-tronic air purifiers, emergency exit signs, and distrib-uted power some of those applications, a dedicated SwitchedMode Power Supply (SMPS) Controller IC is used inconjunction with a microcontroller. In other applica-tions, however, a dedicated SMPS Controller IC may beoverkill. An alternative approach is to generate a lowcost SMPS function in a smart microcontroller, such asthe PIC16C620A.

2000 Microchip Technology Inc. Preliminary DS00216A-page 1 AN216 INTRODUCTION In many applications, a DC/DC Converter is used to produce a regulated voltage or current, derived from an

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