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Introduction to Pulse Width Modulation. A look at a powerful technique for controlling analog circuits with a microprocessor's digital outputs. Pulse width modulation (PWM) is a powerful technique for controlling analog circuits with a microprocessor's digital outputs. PWM is employed in a wide variety of applications, ranging from measurement and communications to power control and conversion.
Using PWM Output as a Digital-to-Analog Converter on a TMS320F280x Digital Signal Controller 5. The PWM/DAC approach is not new, but performance limitations have historically confined its. use to low-resolution, low-bandwidth applications.