Patent ID: 7420357

Claim:
A hysteretic DC/DC converter for operating at a high switching frequency, comprising a converter power stage with a supply voltage input, a controlled voltage output and an enable input, a comparator with a reference voltage input, a feedback input and an output, and a gating circuit coupled between the output of the comparator and the enabling input of the converter power stage; the gating circuit being configured for inhibiting as a function of load requirements the propagation of enabling pulses from the output of the comparator to the enabling input of the converter power stage; the gating circuit including a gate and a monostable circuit; the gate having a first input connected to the output of the comparator, a second input connected to an output of the monostable circuit, and an output connected to the enable input of the converter power stage; the monostable circuit having a variable delay time and a delay control input; the delay time of the monostable circuit being adjusted in a closed feedback loop so that it remains shorter than time periods between successive current conversion pulses from the converter power stage under respective load conditions.