POWER SUPPLY APPARATUS AND METHOD FOR POWER AMPLIFIER

Title:

POWER SUPPLY APPARATUS AND METHOD FOR POWER AMPLIFIER

Document Type and Number:

WIPO Patent Application WO/2020/015755

Kind Code:

A1

Abstract:

Disclosed are a power supply apparatus and method for a power amplifier. The power supply apparatus for a power amplifier comprises: a redundant circuit configured to provide an input voltage to a power-off holding circuit after performing redundancy on an output voltage of a first power supply circuit and an output voltage of a second power supply circuit, and to provide an input voltage to a grid voltage circuit after performing redundancy on the output voltage of the first power supply circuit and an output voltage of the power-off holding circuit; the power-off holding circuit configured to provide power-off energy holding and the power-off delay to a grid voltage output by the grid voltage circuit; and a detection control circuit configured to detect the power-off holding circuit during a power-on process, to detect a voltage of the power-off holding circuit and the voltage of the grid voltage circuit during a normal operation and power-off process and to realize, where a detection result satisfies a determination condition, that power on with the grid voltage is earlier than that with a drain voltage and power off with the grid voltage is later than that with the drain voltage by means of the enable control of an enable circuit.

Inventors:

LI XIANGFENG (CN)
LI CHANGLANG (CN)
ZENG JIXIANG (CN)
LIU ZHONG (CN)
SUN WENCHANG (CN)
XIAO HUANQING (CN)
ZHANG JINCHAO (CN)

Application Number:

PCT/CN2019/096887

Publication Date:

January 23, 2020

Filing Date:

July 19, 2019

Export Citation:

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Assignee:

ZTE CORP (CN)

International Classes:

H03F3/02; H03F3/20

Foreign References:

CN103368750A	2013-10-23
CN103296981A	2013-09-11
CN102412815A	2012-04-11
US20070236292A1	2007-10-11

Other References: