公开(公告)号：US08786324B1

公开(公告)日：2014-07-22

申请号：US13974426

申请日：2013-08-23

Applicant: VIA Technologies, Inc.

Inventor： Yeong-Sheng Lee

IPC: H03K17/16

CPC classification number: H03K19/0185

Abstract: A driving circuit is provided. The driving circuit is configured to generate an output signal according to an input signal generated from an input-stage voltage with a first voltage level and a reference voltage with a second voltage level. The driving circuit has a differential amplifier and an output stage. The differential amplifier has a first input terminal coupled to the reference voltage, a second input terminal coupled to the output signal, and an output terminal. The differential amplifier is supplied by an operation voltage with a third voltage level. The output stage is configured to receive the input signal and the operation voltage to generate the output signal. The second input terminal is coupled to the output terminal of the differential amplifier according to the input signal. The operation voltage is generated according to the input signal and the input-stage voltage.

Abstract translation: 提供驱动电路。 驱动电路被配置为根据从具有第一电压电平的输入级电压和具有第二电压电平的参考电压产生的输入信号产生输出信号。 驱动电路具有差分放大器和输出级。 差分放大器具有耦合到参考电压的第一输入端，耦合到输出信号的第二输入端和输出端。 差分放大器由具有第三电压电平的操作电压提供。 输出级被配置为接收输入信号和操作电压以产生输出信号。 第二输入端子根据输入信号耦合到差分放大器的输出端子。 根据输入信号和输入级电压产生工作电压。

公开(公告)号：US20140361835A1

公开(公告)日：2014-12-11

申请号：US13939325

申请日：2013-07-11

Applicant: VIA Technologies, Inc.

Inventor： Yeong-Sheng Lee

IPC: H03F3/345

CPC classification number: H03F3/345 ,  H03F3/45183 ,  H03F2200/91 ,  H03F2203/45674

Abstract: Some embodiments of the system comprise a current mirror with two switches (a first switch and a second switch) and two compensation circuits (a first compensation circuit and a second compensation circuit). In one embodiment, the first compensation circuit adjusts a drain voltage of the second switch based on a drain voltage of the first switch, and the second compensation circuit adjusts a current through the first switch based on the drain voltage of the second switch.

Abstract translation: 该系统的一些实施例包括具有两个开关（第一开关和第二开关）和两个补偿电路（第一补偿电路和第二补偿电路）的电流镜。 在一个实施例中，第一补偿电路基于第一开关的漏极电压来调节第二开关的漏极电压，并且第二补偿电路基于第二开关的漏极电压来调节通过第一开关的电流。

公开(公告)号：US08816726B1

公开(公告)日：2014-08-26

申请号：US13888622

申请日：2013-05-07

Applicant: Via Technologies, Inc.

Inventor： Yeong-Sheng Lee

IPC: H03K3/00 ,  H03K17/16

CPC classification number: H03K19/018528 ,  H04L25/0272

Abstract: A differential signaling driver includes a current source, a differential signal generator, and a resistor. The current source is connected between an operation voltage and a first node, and supplies a driving current to the first node. The differential signal generator is connected between the first node and a second node. The differential signal generator receives a digital input signal, and generates a pair of differential output signals at a first output node and a second output node according to the digital input signal. The resistor is connected between the second node and a ground voltage. The differential signal generator couples the first output node to the operation voltage and the second output node to the ground voltage or couples the first output node to the ground voltage and the second output node to the operation voltage according to the digital input signal.

Abstract translation: 差分信号驱动器包括电流源，差分信号发生器和电阻器。 电流源连接在工作电压和第一节点之间，并向第一节点提供驱动电流。 差分信号发生器连接在第一节点和第二节点之间。 差分信号发生器接收数字输入信号，并根据数字输入信号在第一输出节点和第二输出节点产生一对差分输出信号。 电阻连接在第二节点和接地电压之间。 差分信号发生器将第一输出节点与操作电压和第二输出节点耦合到地电压，或者根据数字输入信号将第一输出节点接地电压和第二输出节点耦合到工作电压。

公开(公告)号：US08723581B1

公开(公告)日：2014-05-13

申请号：US13753746

申请日：2013-01-30

Applicant: Via Technologies, Inc.

Inventor： Yeong-Sheng Lee

IPC: H03L5/00

CPC classification number: H03K19/017509

Abstract: An input buffer is provided. The input buffer receives an input signal through an input terminal and outputs an output signal at an output terminal. The input circuit includes an input circuit and a level shifting circuit. The input circuit receives the input signal and generates a buffer signal according to the input signal. The level shifting circuit receives a first supply voltage and the buffer signal and generates the output signal at the output terminal according to the buffer signal and the first supply voltage. The first high level of the input signal is higher than a voltage level of the first supply voltage. When the input signal is at a first high level, the input circuit generates the buffer signal whose voltage level is between the first high level of the input signal and the voltage level of the first supply voltage.

Abstract translation: 提供输入缓冲区。 输入缓冲器通过输入端接收输入信号，并在输出端输出输出信号。 输入电路包括输入电路和电平移位电路。 输入电路接收输入信号，并根据输入信号产生缓冲信号。 电平移位电路接收第一电源电压和缓冲信号，并根据缓冲器信号和第一电源电压在输出端产生输出信号。 输入信号的第一高电平高于第一电源电压的电压电平。 当输入信号处于第一高电平时，输入电路产生其电压在输入信号的第一高电平和第一电源电压的电压电平之间的缓冲信号。

公开(公告)号：US08648639B2

公开(公告)日：2014-02-11

申请号：US13644403

申请日：2012-10-04

Applicant: Via Technologies, Inc.

Inventor： Yeong-Sheng Lee ,  Kuen-Chir Wang

IPC: H03K3/017

CPC classification number: H02M3/156

Abstract: A duty adjustment circuit is provided. The duty adjustment circuit is used to adjust a duty cycle of a first driving signal. The duty adjustment circuit includes a filter, a first comparator, and a first duty adjustor. The filter receives a comparison result signal and filters the comparison result signal to generate a duty information signal. The duty information signal indicates a duty cycle of the comparison result signal. The first comparator receives the duty information signal and determines whether a direct-current (DC) level of the duty information signal falls into a predefined voltage range to generate a first adjustment signal. The first duty adjustor receives the first adjustment signal and the first driving signal and adjusts the duty cycle of the first driving signal according to the first adjustment signal.

Abstract translation: 提供了一个占空比调整电路。 占空比调整电路用于调整第一驱动信号的占空比。 占空比调节电路包括滤波器，第一比较器和第一占空比调节器。 滤波器接收比较结果信号并对比较结果信号进行滤波以产生占空比信息信号。 占空信息信号表示比较结果信号的占空比。 第一比较器接收占空信息信号，并确定占空比信息信号的直流（DC）电平是否落入预定的电压范围以产生第一调整信号。 第一负载调节器接收第一调整信号和第一驱动信号，并根据第一调整信号调整第一驱动信号的占空比。