公开(公告)号：US20180083576A1

公开(公告)日：2018-03-22

申请号：US15272139

申请日：2016-09-21

Applicant: QUALCOMM Incorporated

Inventor： Moataz Abdelsamie ABDELFATTAH ,  Iulian MIREA ,  Song SHI

IPC: H03F1/02 ,  H03F3/21 ,  H03F3/19 ,  H02M3/155 ,  H02M1/08

CPC classification number: H03F1/0222 ,  H02M1/08 ,  H02M3/155 ,  H03F1/0227 ,  H03F3/19 ,  H03F3/21 ,  H03F3/245 ,  H03F2200/102 ,  H03F2200/105 ,  H03F2200/294 ,  H03F2200/432 ,  H03F2200/451 ,  H03F2200/462 ,  H03F2200/78

Abstract: The present disclosure describes a synchronized switching power supply for a radio frequency (RF) power amplifier. In some aspects, a synchronized power supply circuit comprises a first switch connected between a power rail and a first terminal of an inductor that is connected to an output of the circuit via its second terminal. The circuit also includes a second switch connected between a ground rail and the first terminal of the inductor, and respective gate drivers for the first and second switches. An amplifier of the circuit is connected to the power rail and has an output connected to the output of the circuit. A current sensor is connected between the output of the amplifier and the output of the circuit, with an output of the current sensor being connected to an input of a comparator. A delay circuit is connected between an output of the comparator and the first and second gate drivers, and may synchronize the power supply circuit.

公开(公告)号：US20180034417A1

公开(公告)日：2018-02-01

申请号：US15644443

申请日：2017-07-07

Applicant: QUALCOMM Incorporated

Inventor： Joseph DUNCAN ,  Jongrit LERDWORATAWEE ,  Song SHI ,  Thomas MARRA

IPC: H03F1/02 ,  H03F3/19 ,  H02M3/156 ,  G05F1/46 ,  H03F3/21 ,  H02M1/08

CPC classification number: H03F1/0216 ,  G05F1/461 ,  H02M1/08 ,  H02M3/156 ,  H02M2001/0045 ,  H03F1/0222 ,  H03F3/19 ,  H03F3/21 ,  H03F3/245 ,  H03F2200/102 ,  H03F2200/294 ,  H03F2200/432 ,  H03F2200/451 ,  H03F2200/462 ,  H03F2200/78 ,  H04W88/02 ,  H04W88/08

Abstract: Certain aspects of the present disclosure provide methods and apparatus for adjusting voltage regulators of a power supply, such as an envelope tracking power supply. Certain aspects provide a power supply. The power supply may include a first voltage regulator having an output coupled to a voltage supply node of an amplifier. The power supply may further include a second voltage regulator having an output coupled to the voltage supply node of the amplifier. The power supply may further include a controller for adjusting a ratio of an average current supplied by the first voltage regulator to an average current supplied by the second voltage regulator to the voltage supply node of the amplifier based on an output voltage supplied to the voltage supply node of the amplifier by the first voltage regulator and the second voltage regulator.

公开(公告)号：US20190326858A1

公开(公告)日：2019-10-24

申请号：US16457442

申请日：2019-06-28

Applicant: QUALCOMM Incorporated

Inventor： Zhiqing ZHANG ,  Chi Fan YUNG ,  Joseph DUNCAN ,  Jun HUA ,  Song SHI ,  Thomas MARRA

IPC: H03F1/02 ,  H03F3/213 ,  H03F3/195 ,  H02M3/155

Abstract: Certain aspects of the present disclosure provide methods and apparatus for generating an envelope tracking power supply voltage. For example, certain aspects of the present disclosure provide an envelope tracking power supply having a linear amplifier having an output coupled to a power supply node of an amplifier, wherein a power supply node of the linear amplifier is coupled to a first voltage supply node. The envelope tracking power supply may also include a switch mode power supply having an output coupled to the power supply node of the amplifier. Certain aspects also include a circuit having a first switch coupled to the first voltage supply node and a second switch coupled to a second voltage supply node, wherein a power supply node of the switch mode power supply is coupled to the first switch and the second switch.

公开(公告)号：US20180034416A1

公开(公告)日：2018-02-01

申请号：US15643242

申请日：2017-07-06

Applicant: QUALCOMM Incorporated

Inventor： Joseph DUNCAN ,  Thomas MARRA ,  Song SHI ,  Iulian MIREA

IPC: H03F1/02 ,  H03F3/195 ,  H03F3/213 ,  H03F1/26

CPC classification number: H03F1/0216 ,  H03F1/0211 ,  H03F1/26 ,  H03F3/195 ,  H03F3/213 ,  H03F2200/102 ,  H03F2200/451 ,  H03F2200/504 ,  H04B2001/0408

Abstract: Certain aspects of the present disclosure provide methods and apparatus for operating an envelope tracking power supply. The method may include receiving, from a modem of a device, information indicative of a transmit waveform statistic of a signal to be wirelessly transmitted by the device. The method may further include adjusting a configuration of the envelope tracking power supply based on the transmit waveform statistic of the signal.

公开(公告)号：US20240429882A1

公开(公告)日：2024-12-26

申请号：US18339093

申请日：2023-06-21

Applicant: QUALCOMM Incorporated

Inventor： Chengwu TAO ,  Iulian MIREA ,  Song SHI ,  Jongshick AHN ,  Carl HARDIN

IPC: H03F3/24 ,  H04B1/04

Abstract: Certain aspects of the present disclosure are directed towards an amplification circuit. The amplification circuit generally includes: a first amplifier; a first power supply having an output coupled to a supply input of the first amplifier and configured to provide a first power to the supply input of the first amplifier; a second amplifier; a second power supply having an output coupled to a supply input of the second amplifier and configured to provide a second power to the supply input of the second amplifier; and a third amplifier having a supply input coupled to the first power supply and the second power supply, the first power supply and the second power supply being further configured to provide a third power to the supply input of the third amplifier.

公开(公告)号：US20210083576A1

公开(公告)日：2021-03-18

申请号：US16573825

申请日：2019-09-17

Applicant: QUALCOMM Incorporated

Inventor： Mukesh BANSAL ,  Pengfei LI ,  Moataz Abdelsamie ABDELFATTAH ,  Iulian MIREA ,  Song SHI

IPC: H02M3/158 ,  H03K3/037

Abstract: A method for unbalancing a tri-level switching regulator uses hysteretic control when switching across multiple states of the tri-level switching regulator. The method includes determining a battery voltage and an output voltage of the tri-level switching regulator. The method also includes dynamically adjusting at least one of a first hysteretic window of a first hysteretic comparator associated with a second switching state of the tri-level switching regulator and a second hysteretic window of a second hysteretic comparator associated with a first switching state of the tri-level switching regulator based on the battery voltage and the output voltage.

公开(公告)号：US20180034415A1

公开(公告)日：2018-02-01

申请号：US15643124

申请日：2017-07-06

Applicant: QUALCOMM Incorporated

Inventor： Zhiqing ZHANG ,  Chi Fan YUNG ,  Joseph DUNCAN ,  Jun HUA ,  Song SHI ,  Thomas MARRA

IPC: H03F1/02 ,  H03F3/213 ,  H02M3/155 ,  H03F3/195

CPC classification number: H03F1/0216 ,  H02M3/155 ,  H03F1/0227 ,  H03F3/195 ,  H03F3/213 ,  H03F2200/102 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2200/504 ,  H03F2200/511 ,  H04B2001/0408

Abstract: Certain aspects of the present disclosure provide methods and apparatus for generating an envelope tracking power supply voltage. For example, certain aspects of the present disclosure provide an envelope tracking power supply having a linear amplifier having an output coupled to a power supply node of an amplifier, wherein a power supply node of the linear amplifier is coupled to a first voltage supply node. The envelope tracking power supply may also include a switch mode power supply having an output coupled to the power supply node of the amplifier. Certain aspects also include a circuit having a first switch coupled to the first voltage supply node and a second switch coupled to a second voltage supply node, wherein a power supply node of the switch mode power supply is coupled to the first switch and the second switch.