⚡ 本页包含 AI 生成的分析内容,仅供参考
提出一种单电感双输出转换器,利用线性放大器驱动的交叉调节实现优先能量分配,解决了传统多输出转换器中交叉调节和效率问题。
mobile devices handle modulated signals with high peak-toaverage power ratios (PAPRs) while maintaining linearity and power efficiency. Envelope-tracking technology increases the efficiency of an RF-PA by modulating its supply voltage proportionally to the RF signals. The function of an envelopetracking supply modulator (ETSM) is to track the envelope information and provide the same output voltage to the RF-PA. Figure 2.3.1 shows a conventional hybrid ETSM, which is comprised of a linear amplifier (LA) and a hysteresiscontrolled switching regulator (SWR). Since the ETSM is mainly battery-powered, an additional SWR is required. This paper presents a single-inductor dual-output (SIDO) converter that removes both SWRs, as illustrated in Fig. 2.3.2, to speed
Shang-Hsien Yang1, Yen-Ting Lin1, Yu-Sheng Ma1, Hung-Wei Chen1,
Ke-Horng Chen1, Chin-Long Wey1, Ying-Hsi Lin2, Shian-Ru Lin2, Tsung-Yen Tsai2 National Chiao Tung University, Hsinchu, Taiwan, Realtek Semiconductor, Hsinchu, Taiwan 1 2 RF-PAs in 4G LTE