Pushbuttons Control Regulated Switching Converter
Digitally controlled potentiometers (digipots) are useful for generating analog control voltages, but they usually operate under the direction of a microcontroller. Pushbutton control is simpler, but the digipot’s inputs have no switch-debounce capability, and its up/down control is not particularly suitable for pushbuttons. Nor are such kinds of applications (pushbutton control of digipots) supported by application notes. This application note describes a circuit enabled, by pushbutton control of a digital potentiometer, to control the regulated output of a switching converter.
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