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Life & fun · April 20, 2018

Parameterized PWM controller in VHDL

Digital outputs can either go ON or OFF. Analog signals, on the other side, can smoothly assume multiple values in a range. There is a technique that emulates analog behavior with a digital output. That technique is PWM, namely, Pulse Width Modulation. It can be implemented as pulses with varying &#

Parameterized PWM controller in VHDL launched on April 20, 2018 with 22 votes, #763 of 2,753 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 8 years on.

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In plain words

This is a VHDL implementation of a parameterized PWM controller that generates pulse width modulation signals. PWM emulates analog behavior on digital outputs by varying the duration of high and low pulses. The controller maintains a fixed output frequency while adjusting duty cycle to produce an equivalent analog signal. It is designed for FPGA developers and embedded systems engineers who need to control analog devices using digital outputs.

written from the facts on this page · September 2026

From the sources

Digital outputs can either go ON or OFF. Analog signals, on the other side, can smoothly assume multiple values in a range. There is a technique that emulates analog behavior with a digital output. That technique is PWM, namely, Pulse Width Modulation. It can be implemented as pulses with varying 'high' and 'low' duration. A…

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