Figure 1 Analog PWM circuit using triangle wave generator and comparator. In this Design Idea, we show an alternative circuit. It uses very little power, can be implemented in a small silicon area, ...

Modifications for a Dual-Device PWM Generator. It is important to note that the control voltage also changes the frequency in both circuit methods. Thus, adding an additional comparator to the ...

The PWM generator of the flyback circuit was simulated using Proteus simulation suite. Fig. 13 shows the digital simulation diagram of the PWM generation section.

This circuit easily achieves 0.1% PWM accuracy. The output of the LTC6992 controls one section of a 74HC4053 triple single-pole double-throw (SPDT) analog switch whose output is switched between ...

BTW, replacing the op-amp with a comparator would allow a mostly-digital loop, with its output controlling the direction of an up-down counter that sets the mark length within an all-digital PWM.

With a competent PWM generator on a microcontroller, you can create this carrier modulation easily enough yourself. Set the PWM frequency to 38 kHz and the duty cycle somewhere in the 33%-50% ...

Linear Technology has unveiled a new pulse width modulation (pwm) generator with 48 independent channels. According to the IC specialist, each channel has an individually adjustable 12bit (4,096 steps ...