公开(公告)号：US20150326186A1

公开(公告)日：2015-11-12

申请号：US14272615

申请日：2014-05-08

Applicant: MediaTek Inc.

Inventor： Hao-Ping HONG ,  Hung-I WANG ,  Chun-Yen TSENG ,  Yen-Hsun HSU

IPC: H03F1/02 ,  H03F3/21 ,  H03F3/19

CPC classification number: H03F3/245 ,  H03F1/0227 ,  H03F1/0238 ,  H03F1/30 ,  H03F3/19 ,  H03F3/21 ,  H03F2200/102 ,  H03F2200/432 ,  H03F2200/451 ,  H03F2200/459

Abstract: A hybrid power module for supplying a power to a power amplifier is provided. The hybrid power module includes a DC-DC converter and a linear regulator. The DC-DC converter provides a first current to the power amplifier via a first inductor according to an operating frequency and an envelope tracking signal. The linear regulator provides a second current to the power amplifier via a first capacitor according to the envelope tracking signal. A switch-mode power supply (SMPS) ripple voltage caused by the DC-DC converter is reduced by the linear regulator.

Abstract translation: 提供了一种用于向功率放大器供电的混合电源模块。 混合电源模块包括一个DC-DC转换器和一个线性稳压器。 DC-DC转换器根据工作频率和包络跟踪信号，经由第一电感器向功率放大器提供第一电流。 线性调节器根据包络跟踪信号经由第一电容器向功率放大器提供第二电流。 由DC-DC转换器引起的开关电源（SMPS）纹波电压由线性稳压器降低。