公开(公告)号：US12027966B2

公开(公告)日：2024-07-02

申请号：US17892085

申请日：2022-08-21

Applicant: Richtek Technology Corporation

Inventor： Ta-Yung Yang ,  Wei-Chuan Wu ,  Chih-Hao Yang ,  Ping-Ching Huang ,  Li-Wen Fang

IPC: H02M1/084 ,  H02M1/00 ,  H02M3/158

CPC classification number: H02M1/084 ,  H02M1/0041 ,  H02M1/0043 ,  H02M3/158

Abstract: A control circuit for controlling a stackable multiphase power converter includes: a synchronization terminal; a synchronization signal connected to the synchronization terminals of a plurality of the control circuits in parallel, wherein the synchronization signal includes a plurality of pulses to be successively counted as a count number; and a reset signal, configured to reset and initiate the count number; wherein the control circuit further comprises a phase-sequence number, wherein the control circuit enables a corresponding power stage circuit to generate a phase of the output power when the count number reaches the phase-sequence number.

公开(公告)号：US20250079984A1

公开(公告)日：2025-03-06

申请号：US18537844

申请日：2023-12-13

Applicant: Richtek Technology Corporation

Inventor： Wei-Chuan Wu ,  Chih-Hao Yang ,  Li-Wen Fang ,  Ting-Jung Tai

IPC: H02M3/158 ,  H02M1/00 ,  H02M1/088

Abstract: A conversion control circuit controls plural stackable sub-converters which are coupled in parallel to generate an output power to a load. The conversion control circuit includes a current sharing terminal and a current sharing circuit. A current sharing signal is connected, in parallel, to the current sharing terminals. The current sharing circuit includes: configuration (1): the current sharing signal is generated only according to an inductor current corresponding to one of plural inductors of the plural stackable sub-converters; or configuration (2): the current sharing signal is generated according to plural inductor currents corresponding to plural inductors of plural activated phases of the plural stackable sub-converters, wherein a ratio of a portion of the current sharing signal generated by a master control circuit to a portion generated by one of the slave control circuits is k which relates to a difference between a total phase number and an activated phase number.

公开(公告)号：US20230238875A1

公开(公告)日：2023-07-27

申请号：US17892085

申请日：2022-08-21

Applicant: Richtek Technology Corporation

Inventor： Ta-Yung Yang ,  Wei-Chuan Wu ,  Chih-Hao Yang ,  Ping-Ching Huang ,  Li-Wen Fang

IPC: H02M1/084 ,  H02M1/00 ,  H02M3/158

CPC classification number: H02M1/084 ,  H02M1/0041 ,  H02M1/0043 ,  H02M3/158

Abstract: A control circuit for controlling a stackable multiphase power converter includes: a synchronization terminal; a synchronization signal connected to the synchronization terminals of a plurality of the control circuits in parallel, wherein the synchronization signal includes a plurality of pulses to be successively counted as a count number; and a reset signal, configured to reset and initiate the count number; wherein the control circuit further comprises a phase-sequence number, wherein the control circuit enables a corresponding power stage circuit to generate a phase of the output power when the count number reaches the phase-sequence number.