Power supply device, method for managing power supply thereof and wireless communication terminal

摘要

In the patent document, the wireless communication terminal includes a baseband working unit, a RF working unit and a DC power converter connected with the baseband working unit and the RF working unit, further including a power supply device, a CPU and an envelope detection device; the power supply device is configured to receive a voltage supplied by the DC power converter, supplying an output voltage to a PA in the RF working unit, receiving a control signal sent from CPU, adjusting the output voltage according to the control signal; the envelope detection device is configured to detect the envelope signal of output signal of the PA in real time and send the envelope signal to the CPU; the CPU is configured to receive the voltage supplied by the DC power converter, convert the envelope signal into a control signal and send the control signal to the power supply device.

主权项

1. A wireless communication terminal, comprising a baseband working unit and a radio frequency (RF) working unit, and a direct current (DC) power converter connected with both said baseband working unit and said RF working unit, said wireless communication terminal further comprising: a power supply device, a central processing unit (CPU) and an envelope detection device, wherein:
said power supply device is configured to receive a voltage supplied by said DC power converter, provide an output voltage to a power amplifier (PA) in said RF working unit, receive a control signal sent by said CPU, and adjust said output voltage according to said control signal, so that said output voltage meets an envelope variation curve of an output signal of said PA; said envelope detection device is connected with said RF working unit and is configured to detect an envelope signal of the output signal of said PA in real time, and send said envelope signal to said CPU; said CPU is connected respectively with said DC power converter, said power supply device and said envelope detection device, and the CPU is configured to: receive a voltage provided by said DC power converter, convert said envelope signal sent by said envelope detection device into the control signal, and send the control signal to said power supply device.