The design of Power Amplifier Switch Mode Power Supply for handset applications

被引：0
|
作者：
Yan, Wei [2 ,3 ]
Wang, Yuchen [2 ]
Wang, Zhenyu [2 ]
Jin, Yufeng [1 ]
Shi, Guangyi [1 ,2 ]
机构：
[1] Peking Univ, Shenzhen Grad Sch, Shenzhen, Peoples R China
[2] Peking Univ, Sch Software & Microelect Wuxi, Beijing, Peoples R China
[3] Shanghai Res Inst Microelect, Shanghai 201203, Peoples R China
来源：
2015 IEEE INTERNATIONAL CONFERENCE ON CYBER TECHNOLOGY IN AUTOMATION, CONTROL, AND INTELLIGENT SYSTEMS (CYBER) | 2015年
关键词：
TD-LTE; Envelope Tracking; Switching mode power supply; High efficiency;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents a design of switch mode power supply that can be used in the handheld power amplifier MRF9742 for the TD-LTE signal. This power supply uses PWM mode buck-convertor structure and envelopes tracking technology, which can acquire the envelope of input signal to dynamically adjust the MRF9742 power amplifier's supply voltage. Therefore, the DC power can be as low as possible with no effect on the output compared with the LDO power supply and the PAE can be increased. The PA with switching mode power supply can increase its PAE about 10% compared with LDO. The handheld devices with switching mode power supply can enhance the efficiency of the power supply to extend the working time of themselves.
引用
收藏
页码：1394 / 1398
页数：5
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