公开(公告)号：EP3826173A1

公开(公告)日：2021-05-26

申请号：EP19837408.4

申请日：2019-07-19

申请人： ZTE Corporation

发明人： LI, Xiangfeng ,  LI, Changlang ,  ZENG, Jixiang ,  LIU, Zhong ,  SUN, Wenchang ,  XIAO, Huanqing ,  ZHANG, Jinchao

IPC分类号： H03F3/02 ,  H03F3/20

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