公开(公告)号：US20190305683A1

公开(公告)日：2019-10-03

申请号：US15937947

申请日：2018-03-28

Applicant: QUALCOMM Incorporated

Inventor： Chunlei SHI ,  Jongrit LERDWORATAWEE ,  Yu PU

IPC: H02M3/158 ,  G05F1/26

Abstract: A boost and LDO hybrid converter with dual-loop control is disclosed. In some implementations, a hybrid converter includes an inductor having a first terminal to receive an input voltage and a second terminal; an n-type metal oxide semiconductor device (nMOS) having a drain coupled to the second terminal of the inductor; a p-type metal oxide semiconductor device (pMOS) having a gate, a drain, and a source, the source coupled to the second terminal of the inductor; an output capacitor having a first terminal coupled to the drain of the first pMOS; and a controller having a switch driver and a buffer, wherein the controller is configured to use the switch driver to drive the gate of the first pMOS in a boost mode and to use the buffer to drive the gate of the first pMOS in a low drop out (LDO) mode.

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.