公开(公告)号：US20160301301A1

公开(公告)日：2016-10-13

申请号：US15038561

申请日：2015-01-14

Applicant: MediaTek Inc.

Inventor： Chien-Wei KUAN ,  Yen-Hsun HSU ,  Tun-Shih CHEN

IPC: H02M3/04 ,  H02M1/08

CPC classification number: H02M3/04 ,  H02M1/08 ,  H02M3/156 ,  H02M2001/0009 ,  H02M2001/0025 ,  H02M2001/0032 ,  H02M2003/1566 ,  Y02B70/16

Abstract: A voltage supply circuit is provided. The voltage supply circuit may operate at a first or second mode to generate an output voltage at an output node. The voltage supply circuit includes a compensation circuit, a comparator circuit, an inductor, and a driver circuit. The compensation circuit generates a compensation signal according to a feedback signal related to the output voltage. The comparator circuit compares the compensation signal with a first reference signal to generate a comparison signal. The inductor is coupled to the output node. The driver circuit receives the comparison signal and generates a driving voltage to the inductor according to the comparison signal. When the voltage supply circuit enters the second mode from the first mode, a duty of the comparison signal is increased to broaden an operation bandwidth of the voltage supply circuit in a predetermined period at the second mode.

Abstract translation: 提供电源电路。 电压供应电路可以在第一或第二模式下操作，以在输出节点处产生输出电压。 电压电路包括补偿电路，比较器电路，电感器和驱动电路。 补偿电路根据与输出电压有关的反馈信号产生补偿信号。 比较器电路将补偿信号与第一参考信号进行比较以产生比较信号。 电感器耦合到输出节点。 驱动电路接收比较信号，并根据比较信号产生对电感器的驱动电压。 当电压供给电路从第一模式进入第二模式时，增加比较信号的占空比，以在第二模式下的预定时段中扩大电压供应电路的工作带宽。

公开(公告)号：US20160294376A1

公开(公告)日：2016-10-06

申请号：US15038588

申请日：2015-01-14

Applicant: MEDIATEK INC.

Inventor： Chien-Wei KUAN ,  Yen-Hsun HSU ,  Tun-Shih CHEN

IPC: H03K17/00

CPC classification number: H03K17/005 ,  H02M3/1584 ,  H02M2001/0032 ,  H02M2001/0048 ,  Y02B70/1491 ,  Y02B70/16

Abstract: A voltage supply circuit is provided. The voltage supply circuit is capable of operating at a first mode and generates a loading current at an output node. The voltage supply circuit includes a plurality of inductors and a plurality of drier circuits. The plurality of inductors are coupled to the output node. Each inductor has an inductance value. The plurality driver circuits are coupled to the plurality of inductors respectively. The inductance value of a first inductor among the plurality of inductors is greater than the inductance values of the other inductor.

Abstract translation: 提供电源电路。 电压供应电路能够在第一模式下操作并且在输出节点处产生负载电流。 电压供给电路包括多个电感器和多个干燥电路。 多个电感器耦合到输出节点。 每个电感都有一个电感值。 多个驱动电路分别耦合到多个电感器。 多个电感器中的第一电感器的电感值大于另一个电感器的电感值。

公开(公告)号：US20140327485A1

公开(公告)日：2014-11-06

申请号：US14336137

申请日：2014-07-21

Applicant: MediaTek Inc.

Inventor： Chun-Yen TSENG ,  Yen-Hsun HSU

IPC: H03F3/195

CPC classification number: H03F3/195 ,  H03F1/0227 ,  H03F3/21 ,  H03F2200/102 ,  H03F2200/451 ,  H03F2200/504

Abstract: A power module at least includes an ET (Envelope Tracking) module. The ET module includes a buck converter, an inductor, and a capacitor. The buck converter is coupled to a work voltage. The buck converter has a first input terminal for receiving a first control signal, a second input terminal coupled to a supply node, and a buck output terminal The inductor is coupled between the buck output terminal of the buck converter and the supply node. The capacitor is coupled between the supply node and a ground voltage. The ET module is configured to supply a first adaptive supply voltage at the supply node. The first adaptive supply voltage is determined according to the first control signal.

Abstract translation: 电源模块至少包括ET（信封跟踪）模块。 ET模块包括降压转换器，电感器和电容器。 降压转换器耦合到工作电压。 降压转换器具有用于接收第一控制信号的第一输入端子，耦合到电源节点的第二输入端子和降压输出端子。电感器耦合在降压转换器的降压输出端子和电源节点之间。 电容器耦合在电源节点和接地电压之间。 ET模块被配置为在供应节点处提供第一自适应电源电压。 第一自适应电源电压根据第一控制信号确定。

公开(公告)号：US20160301302A1

公开(公告)日：2016-10-13

申请号：US15038575

申请日：2015-01-14

Applicant: MEDIATEK INC

Inventor： Chien-Wei KUAN ,  Yen-Hsun HSU ,  Tun-Shih CHEN

IPC: H02M3/04 ,  H02M1/08

CPC classification number: H02M3/158 ,  H02M1/08 ,  H02M3/04 ,  H02M3/1584 ,  H02M2001/0009 ,  H02M2001/0019 ,  H02M2003/1586

Abstract: A voltage converter is provided. The voltage converter includes a compensation circuit, a first comparator circuit, a first inductor, a first driver circuit, and a phase-lag circuit. The compensation circuit generates a first compensation signal according to a loading state of the voltage converter. The first comparator circuit compares the first compensation signal and a first reference signal to generate a first comparison signal. The first driver circuit generates a first driving voltage to the first inductor according to the first comparison signal. The phase-lag circuit is coupled between the first comparison circuit and the first driver. The phase-lag circuit modifies a duty of the first comparison signal for changing a first inductor current following the first inductor.

Abstract translation: 提供电压转换器。 电压转换器包括补偿电路，第一比较器电路，第一电感器，第一驱动器电路和相位滞后电路。 补偿电路根据电压转换器的负载状态产生第一补偿信号。 第一比较器电路比较第一补偿信号和第一参考信号以产生第一比较信号。 第一驱动电路根据第一比较信号产生到第一电感器的第一驱动电压。 相位滞后电路耦合在第一比较电路和第一驱动器之间。 相位滞后电路修改用于改变第一电感器之后的第一电感器电流的第一比较信号的占空比。

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。