| 摘要 |
The present invention provides a power supply device, a method for managing a power supply thereof and a wireless communication terminal. The wireless communication terminal comprises a base band working unit, a radio frequency working unit and a direct current power supply converter connected with the base band working unit and the radio frequency working unit, and the wireless communication terminal also comprises a power supply device, a CPU and an envelope detection device; the power supply device is used for receiving a voltage supplied by the direct current power supply converter, supplying an output voltage to a PA in the radio frequency working unit, receiving a control signal sent from the CPU, adjusting the output voltage according to the control signal and causing the output voltage to meet an envelope change curve of the PA output signal; the envelope detection device is used for detecting an envelope signal of the PA output signal in real time and sending the envelope signal to the CPU; and the CPU is used for receiving the voltage supplied by the direct current power supply converter, converting the envelope signal sent by the envelope detection device into the control signal and sending the control signal to the power supply device. According to the scheme of the present invention, the power consumption and radiating problems of the PA are solved. |
