公开(公告)号：US09735681B2

公开(公告)日：2017-08-15

申请号：US15038575

申请日：2015-01-14

Applicant: MediaTek Inc.

Inventor： Chien-Wei Kuan ,  Yen-Hsun Hsu ,  Tun-Shih Chen

IPC: H02M3/158 ,  H02M1/08 ,  H02M1/00 ,  H02M3/04

CPC classification number: H02M3/158 ,  H02M1/08 ,  H02M3/04 ,  H02M3/1584 ,  H02M2001/0009 ,  H02M2001/0019 ,  H02M2003/1586

Abstract: A voltage converter is provided. The voltage converter includes a compensation circuit, a first comparator circuit, a first inductor, a first driver circuit, and a phase-lag circuit. The compensation circuit generates a first compensation signal according to a loading state of the voltage converter. The first comparator circuit compares the first compensation signal and a first reference signal to generate a first comparison signal. The first driver circuit generates a first driving voltage to the first inductor according to the first comparison signal. The phase-lag circuit is coupled between the first comparison circuit and the first driver. The phase-lag circuit modifies a duty of the first comparison signal for changing a first inductor current following the first inductor.

公开(公告)号：US10389344B2

公开(公告)日：2019-08-20

申请号：US15038588

申请日：2015-01-14

Applicant: MediaTek Inc.

Inventor： Chien-Wei Kuan ,  Yen-Hsun Hsu ,  Tun-Shih Chen

IPC: G05F1/46 ,  G05F1/00 ,  G05F1/26 ,  G05F1/635 ,  H02M3/158 ,  H03K17/00 ,  H02M1/00

Abstract: A voltage supply circuit is provided. The voltage supply circuit is capable of operating at a first mode and generates a loading current at an output node. The voltage supply circuit includes a plurality of inductors and a plurality of drier circuits. The plurality of inductors are coupled to the output node. Each inductor has an inductance value. The plurality driver circuits are coupled to the plurality of inductors respectively. The inductance value of a first inductor among the plurality of inductors is greater than the inductance values of the other inductor.