| 摘要 |
A modulation controller includes an error amplifier which receives a reference voltage and an output voltage (V<SUB>OUT</SUB>) from a switching regulator being controlled by the controller at its inputs and provides a V<SUB>COMP </SUB>signal at its output, and at least one comparator, wherein a first input of the comparator is coupled to an output of the error amplifier and a second input coupled to receive a ramp signal. A V<SUB>COMP </SUB>shift cancellation circuit is interposed between the first or second input of the comparator, wherein the V<SUB>COMP </SUB>shift cancellation circuit improves diode conduction mode performance (DCM) of the regulator by reducing a variation in average V<SUB>COMP</SUB>.
|
