公开(公告)号：US20190123644A1

公开(公告)日：2019-04-25

申请号：US16227819

申请日：2018-12-20

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Ullas PAZHAYAVEETIL ,  Sarang VADNERKAR ,  Theodore M. BURK ,  Jeffrey MAY

IPC: H02M3/156 ,  H03F1/02 ,  H03F3/181 ,  H02M1/08

Abstract: A DC-DC converter and corresponding method for transitioning between a discontinuous conduction mode, DCM, and a continuous conduction mode, CCM, wherein the DC-DC converter is configured to power a signal processing system within an integrated circuit, is provided. The method comprises receiving input data, wherein the input data is for inputting into the signal processing system; determining an amplitude of the input data; and transitioning between DCM and CCM based on the amplitude of the input data. A DC-DC converter and respective method for transitioning from CCM to DCM comprising determining an estimated current representative of an inductor current through an inductor of the DC-DC converter; and transitioning from CCM to DCM based on the estimated current, is provided. A DC-DC converter and respective method for transitioning from DCM to CCM comprising determining either an output voltage of the DC-DC converter or a duty cycle of the DC-DC converter; and transitioning from DCM to CCM based on the determined output voltage or duty cycle of the DC-DC converter, is provided.

公开(公告)号：US20180337597A1

公开(公告)日：2018-11-22

申请号：US15984965

申请日：2018-05-21

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Ullas PAZHAYAVEETIL ,  Sarang VADNERKAR ,  Theodore M. BURK ,  Jeffrey MAY

IPC: H02M3/156 ,  H02M1/08

Abstract: A DC-DC converter and corresponding method for transitioning between a discontinuous conduction mode, DCM, and a continuous conduction mode, CCM, wherein the DC-DC converter is configured to power a signal processing system within an integrated circuit, is provided. The method comprises receiving input data, wherein the input data is for inputting into the signal processing system; determining an amplitude of the input data; and transitioning between DCM and CCM based on the amplitude of the input data. A DC-DC converter and respective method for transitioning from CCM to DCM comprising determining an estimated current representative of an inductor current through an inductor of the DC-DC converter; and transitioning from CCM to DCM based on the estimated current, is provided. A DC-DC converter and respective method for transitioning from DCM to CCM comprising determining either an output voltage of the DC-DC converter or a duty cycle of the DC-DC converter; and transitioning from DCM to CCM based on the determined output voltage or duty cycle of the DC-DC converter, is provided.

公开(公告)号：US20190123645A1

公开(公告)日：2019-04-25

申请号：US16227884

申请日：2018-12-20

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Ullas PAZHAYAVEETIL ,  Sarang VADNERKAR ,  Theodore M. BURK ,  Jeffrey MAY

IPC: H02M3/156 ,  H03F1/02 ,  H03F3/181 ,  H02M1/08

Abstract: A DC-DC converter and corresponding method for transitioning between a discontinuous conduction mode, DCM, and a continuous conduction mode, CCM, wherein the DC-DC converter is configured to power a signal processing system within an integrated circuit, is provided. The method comprises receiving input data, wherein the input data is for inputting into the signal processing system; determining an amplitude of the input data; and transitioning between DCM and CCM based on the amplitude of the input data. A DC-DC converter and respective method for transitioning from CCM to DCM comprising determining an estimated current representative of an inductor current through an inductor of the DC-DC converter; and transitioning from CCM to DCM based on the estimated current, is provided. A DC-DC converter and respective method for transitioning from DCM to CCM comprising determining either an output voltage of the DC-DC converter or a duty cycle of the DC-DC converter; and transitioning from DCM to CCM based on the determined output voltage or duty cycle of the DC-DC converter, is provided.

公开(公告)号：US20180337601A1

公开(公告)日：2018-11-22

申请号：US15986200

申请日：2018-05-22

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Sarang VADNERKAR ,  Ullas PAZHAYAVEETIL ,  Theodore M. BURK ,  Jeffrey MAY

IPC: H02M3/158 ,  H02M3/157

CPC classification number: H02M3/156 ,  H02M1/44

Abstract: A DC-DC converter and a corresponding method for maintaining an output voltage of the DC-DC converter, wherein the DC-DC converter is configured to operate in a discontinuous conduction mode, within a predetermined voltage range. The method comprises adjusting a duty cycle of the DC-DC converter based on the output voltage to maintain the output voltage within a predetermined voltage range; wherein the duty cycle of the DC-DC converter is adjusted by switching between a first switching frequency to a second switching frequency, and the first switching frequency and the second switching frequency are selected such that the first switching frequency and the second switching frequency fall outside of at least one predefined disallowed frequency band.