公开(公告)号：US20190222110A1

公开(公告)日：2019-07-18

申请号：US16236507

申请日：2018-12-30

Applicant: Microchip Technology Incorporated

Inventor： Rohit Tirumala ,  Tommy Ho ,  Fu-Ho Lee ,  Miguel A. Salcedo

IPC: H02M1/14 ,  H02M3/156 ,  H02M1/08

Abstract: An apparatus and method for reducing an output voltage ripple of a converter are provided. The apparatus may include a controller for controlling a converter, wherein the controller may include a clock generating circuit that generates a periodic clock signal containing periodic clock pulses, and a control circuit that causes the clock generating circuit to asynchronously initiate a clock pulse based on a difference between a feedback voltage of the converter and a reference voltage. The apparatus may also include an on-time modulation circuit which modulates the on-time based on the difference between the reference voltage and the sampled output voltage.