Patent ID: 10523119

Abstract:
A DC-DC current-control mode switching converter is disclosed, with peak-mode control circuitry, configured to compare a coil current to a variable current limit, to turn off a high side device when the coil current exceeds the variable current limit. The DC-DC switching converter includes a compensation ramp generator, configured to provide a compensation ramp signal, and an offset circuit, configured to provide an offset current. The DC-DC switching converter further includes an amplifier, configured to generate a control current proportional to the difference between an output voltage and a target voltage, and an adder, to combine the control current, the compensation ramp signal, and the offset current. A DC-DC current-control mode switching converter, with valley-mode control circuitry, configured to compare a coil current to a variable current limit, to turn off a low side device when the coil current falls below the variable current limit, is also disclosed.