公开(公告)号：US20190190377A1

公开(公告)日：2019-06-20

申请号：US16228652

申请日：2018-12-20

Applicant: Qualcomm Incorporated

Inventor： Orlando Santiago ,  Sugato Mukherjee ,  Todd Sutton ,  Zdravko Lukic

IPC: H02M3/155

CPC classification number: H02M3/155 ,  H02M1/08 ,  H02M1/44 ,  H02M3/156 ,  H02M2001/0048

Abstract: Methods and apparatuses can implement voltage regulation with frequency control. In an example aspect, a voltage generator includes an output node and a switch. A voltage controller is coupled to the switch of the voltage generator. A mode controller is coupled to the voltage controller. The voltage controller is configured to control an output voltage at the output node by closing and opening the switch at a switching frequency. The voltage controller is configured to operate in multiple operational modes. The mode controller is configured to cause the voltage controller to shift between two or more operational modes responsive to the switching frequency. The switching frequency can be moved out of a rejection frequency band by shifting operational modes. Shifting can include, for example, shifting from a PFM mode to a PWM mode or shifting from one hysteresis mode to another hysteresis mode within the PFM mode.

公开(公告)号：US10019021B1

公开(公告)日：2018-07-10

申请号：US15712488

申请日：2017-09-22

Applicant: Qualcomm Incorporated

Inventor： Gordon Lee ,  Marko Koski ,  Zdravko Lukic

IPC: G05F1/00 ,  G05F1/565 ,  H02M1/00 ,  G06F1/08 ,  G05F1/575 ,  G06F1/30

CPC classification number: G05F1/565 ,  G05F1/575 ,  G06F1/08 ,  G06F1/305

Abstract: The present disclosure describes aspects of voltage settling detection for switching regulators. In some aspects, an integrated circuit for controlling a switching regulator includes a modulator having an output coupled to switch drive circuitry of the switching regulator. A digital-to-analog converter (DAC) has a first output coupled to an input of the modulator and a second output configured to indicate when a digital-to-analog conversion is complete. A voltage settling detector is configured to receive, from the second output of DAC, an indication that the digital-to-analog conversion is complete and detect a signal transition at the output of the modulator. Based on the indication and the signal transition, the voltage settling detector can provide a status indication for the switching regulator. By so doing, the voltage settling detector may indicate that an output voltage of the switching regulator is proximate a target output voltage level set by the DAC.

公开(公告)号：US12107497B2

公开(公告)日：2024-10-01

申请号：US17370689

申请日：2021-07-08

Applicant: QUALCOMM Incorporated

Inventor： Chris Rosolowski ,  Todd Sutton ,  Orlando Santiago ,  Joseph Duncan ,  Rashed Hoque ,  Marko Koski ,  Zdravko Lukic

IPC: H03F3/04 ,  H02M1/36 ,  H02M3/157 ,  H02M3/158 ,  H03F3/24 ,  H04B1/40

CPC classification number: H02M3/157 ,  H02M1/36 ,  H02M3/158 ,  H02M3/1584 ,  H03F3/24 ,  H04B1/40

Abstract: A voltage regulator circuit using predictively precharged voltage rails is generally disclosed. For example, the voltage regulator circuit may include a main switching regulator configured to provide a target voltage, the main switching regulator having a first voltage node, a precharge switching regulator configured to provide a precharge voltage, the precharge switching regulator having a second voltage node, the precharge voltage based on a difference between the target voltage and a next target voltage to be provided by the main switching regulator, and a precharge switch circuit configured to selectively couple the second voltage node to an output voltage node based upon a transition from the target voltage to the next target voltage.

公开(公告)号：US11063514B2

公开(公告)日：2021-07-13

申请号：US16553035

申请日：2019-08-27

Applicant: QUALCOMM Incorporated

Inventor： Chris Rosolowski ,  Todd Sutton ,  Orlando Santiago ,  Joseph Duncan ,  Rashed Hoque ,  Marko Koski ,  Zdravko Lukic

IPC: H02M3/158 ,  H02M3/157 ,  H04B1/40 ,  H03F3/24

Abstract: A voltage regulator circuit using predictively precharged voltage rails is generally disclosed. For example, the voltage regulator circuit may include a main switching regulator configured to provide a target voltage, the main switching regulator having a first voltage node, a precharge switching regulator configured to provide a precharge voltage, the precharge switching regulator having a second voltage node, the precharge voltage based on a difference between the target voltage and a next target voltage to be provided by the main switching regulator, and a precharge switch circuit configured to selectively couple the second voltage node to an output voltage node based upon a transition from the target voltage to the next target voltage.