Instead of using a monolithic DPGA, you can use two op amps and three analog switches to build a DPGA employing negative time constants. You’re no doubt familiar with the e –t/RC convergent ...

A ripple-generating circuit is usually needed to ensure stability of constant-on-time (COT) controlled buck converters. Different values of the ripple generating circuit can have ...

Analysis shows that the steady-state output of this RC filter, when driven by a 50-kHz, 1-V, 60% duty-cycle PWM wave, is also periodic and stays within a narrow amplitude band. References 1.