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The circuit in Figure 1 shows a PWM (pulse-width-modulated) ramp generator that you can use in low-cost switch-mode dc/dc power supplies. Its supply voltage can range from 5 to 35V dc, and you can set ...

Pulse-width modulation (PWM) generators are integrated in nearly every switching power device. This article shows two methods for implementing a stand-alone analog PWM waveform generator. These ...

A pulse generator or a microcontroller can provide the PWM input, which can vary in frequency and duty cycle. The circuit shown can accept signals with 1% to 99% duty cycles.