Voltage ramp generator and current ramp generator including such a generator

摘要

A voltage ramp generator includes a capacitance and a charging circuit that permits generation of a charging current for the capacitance. The charging circuit for the capacitance includes a current generator having a resistance Rg 2. The charging circuit for the capacitance includes components, such as resistance Re, that enables the capacitance charging current to be proportional to (Re/Rg 2 )². The voltage ramp generator is applicable to circuits for DC voltage converters operating in a current mode.