公开(公告)号：US07800425B2

公开(公告)日：2010-09-21

申请号：US11984560

申请日：2007-11-20

Applicant: Chien-Fu Tang ,  Isaac Y. Chen

Inventor： Chien-Fu Tang ,  Isaac Y. Chen

IPC: H03K5/08

CPC classification number: H03K19/1732

Abstract: An on-chip mode-setting circuit and method are provided for a chip having an output driver with an output terminal connected to a pin of the chip. The pin may be defined between two states from exterior of the chip. The on-chip mode-setting circuit includes an electronic element connected to a bias input of the output driver for producing a voltage when the pin is defined at one of the two states, and a voltage detector for monitoring the voltage to determine which one of the two states the pin is at, and producing a mode-setting signal accordingly.

Abstract translation: 提供了具有输出驱动器的芯片的片上模式设置电路和方法，输出端连接到芯片的引脚。 引脚可以在芯片外部的两种状态之间定义。 片上模式设置电路包括连接到输出驱动器的偏置输入端的电子元件，用于当引脚被限定在两种状态中的一种状态时产生电压;以及电压检测器，用于监视电压以确定哪一个 引脚所在的两个状态，并相应地产生模式设置信号。

公开(公告)号：US07741901B2

公开(公告)日：2010-06-22

申请号：US12068253

申请日：2008-02-05

Applicant: Sao-Hung Lu ,  Isaac Y. Chen

Inventor： Sao-Hung Lu ,  Isaac Y. Chen

IPC: H02M3/07 ,  G05F1/613

CPC classification number: H03K17/6871 ,  H03K17/162

Abstract: For charging a bootstrap capacitor in a voltage converter, a circuit is provided for wider bandwidth to eliminate the feedback stability issue and pin out for compensation circuit. A pair of transistors are connected in series between a power input and the bootstrap capacitor, the first transistor is switched synchronously with a low-side transistor of the voltage converter, and a comparator compares a feedback voltage drawn from a feedback node between the pair of transistors with a reference voltage, to control the second transistor to determine to charge the bootstrap capacitor.

Abstract translation: 为了对电压转换器中的自举电容器进行充电，为更宽的带宽提供电路，以消除反馈稳定性问题，并针对补偿电路进行引脚输出。 一对晶体管串联连接在电源输入和自举电容之间，第一晶体管与电压转换器的低侧晶体管同步地切换，比较器比较从一对 具有参考电压的晶体管，以控制第二晶体管确定对自举电容器充电。

公开(公告)号：US20090279214A1

公开(公告)日：2009-11-12

申请号：US12437934

申请日：2009-05-08

Applicant: TZU-CHEN LIN ,  PEI-LUN HUANG

Inventor： TZU-CHEN LIN ,  PEI-LUN HUANG

IPC: H02H9/02

CPC classification number: H02M1/32

Abstract: A power converter uses a PWM controller to provide a driver output to modulate the duty of the power converter. A protection apparatus and method compare a current sense input of the PWM controller with a reference voltage to assert a signal representing failure, count the number of cycles where the signal representing failure is asserted, and reset an enable signal to inhibit the driver output if the signal representing failure is asserted in several cycles.

Abstract translation: 电源转换器使用PWM控制器提供驱动器输出来调制功率转换器的占空比。 一种保护装置和方法，将PWM控制器的电流检测输入与参考电压进行比较，以断言表示故障的信号，计数表示故障的信号的周期数，并复位使能信号以禁止驱动器输出，如果 表示故障的信号在几个周期内被断言。

公开(公告)号：US07580271B2

公开(公告)日：2009-08-25

申请号：US11826207

申请日：2007-07-13

Applicant: Yun-Chi Chiang ,  Kwan-Jen Chu ,  Jien-Sheng Chen

Inventor： Yun-Chi Chiang ,  Kwan-Jen Chu ,  Jien-Sheng Chen

IPC: H02M3/335

CPC classification number: H02M1/36 ,  H02M3/158 ,  H02M2001/0045

Abstract: An apparatus and method are provided for suppressing the input current inrush for a voltage converter in a pre-charge stage. The voltage converter comprises a power input for receiving an input current, a power output for supplying an output voltage for a load, and an output capacitor connected to the power output. In a pre-charge stage, a current limiting device is connected between the power input and the output capacitor to limit the input current to flow therethrough, and a variable current limiting control circuit provides a control signal to the current limiting device to determine a variable maximum value for the input current.

Abstract translation: 提供一种用于在预充电阶段抑制电压转换器的输入电流浪涌的装置和方法。 电压转换器包括用于接收输入电流的电力输入，用于提供用于负载的输出电压的功率输出和连接到功率输出的输出电容器。 在预充电阶段，电流限制装置连接在电源输入端和输出电容器之间，以限制输入电流流过其中，而可变电流限制控制电路向限流装置提供控制信号以确定变量 输入电流的最大值。

公开(公告)号：US07576522B2

公开(公告)日：2009-08-18

申请号：US12076798

申请日：2008-03-24

Applicant: Isaac Y. Chen ,  Chien-Fu Tang

Inventor： Isaac Y. Chen ,  Chien-Fu Tang

IPC: G05F1/59

CPC classification number: H02M3/1588 ,  H02M1/36 ,  Y02B70/1466 ,  Y10S323/901

Abstract: For soft start of a switching regulator, the output voltage of the switching regulator is fed back to be compared with a ramp signal, in order to trigger a comparison signal when the ramp signal rises up to reach the feedback signal, to enable the switching regulator such that the output voltage changes from a residual voltage toward a target value. The low side switch of the switching regulator is kept off for a period of time after the switching regulator is enabled, so as to prevent a reverse current during the soft start period.

Abstract translation: 对于开关稳压器的软启动，开关稳压器的输出电压被反馈以与斜坡信号进行比较，以便在斜坡信号上升以触发反馈信号时触发比较信号，以使开关稳压器 使得输出电压从残余电压向目标值变化。 在开关稳压器使能之后，开关稳压器的低侧开关保持关闭一段时间，以便在软启动期间防止反向电流。

公开(公告)号：US07474141B2

公开(公告)日：2009-01-06

申请号：US11723789

申请日：2007-03-22

Applicant: Tsung-Wei Huang ,  Jien-Sheng Chen ,  Shui-Mu Lin ,  Nien-Hui Kung

Inventor： Tsung-Wei Huang ,  Jien-Sheng Chen ,  Shui-Mu Lin ,  Nien-Hui Kung

IPC: G05F1/10

CPC classification number: H02M3/07

Abstract: A mode transition control method and circuit switch a charge pump to an operating mode with lower conversion ratio at a regular interval when the input voltage of the charge pump is detected close to a mode transition point, so as to prevent from misjudgment on the mode transition of the charge pump due to external noise, loading change, or inaccurate equivalent resistance of the charge pump.

Abstract translation: 当检测到电荷泵的输入电压接近模式转换点时，模式转换控制方法和电路将电荷泵以规则的间隔将电荷泵切换到具有较低转换比的操作模式，以防止对模式转换的误判 的电荷泵由于外部噪声，负载变化或电荷泵的等效电阻不准确。

公开(公告)号：US07446520B2

公开(公告)日：2008-11-04

申请号：US11210769

申请日：2005-08-25

Applicant: Huan-Jan Hung

Inventor： Huan-Jan Hung

IPC: G05F1/00

CPC classification number: H02M3/158 ,  H02M2001/0025

Abstract: A PWM controller for a voltage regulator comprises an error amplifier to generate an error signal from a difference between the output voltage of the voltage regulator and a reference voltage, and a comparator to compare the error signal with a ramp signal to generate a PWM signal to switch the pair of high side and low side switches of the voltage regulator to produce the output voltage and an output current. When the output current is greater than a threshold, the PWM controller adjusts the reference voltage or the frequency of the ramp signal to reduce the frequency of the PWM signal, thereby reducing the switching loss caused by the switches.

Abstract translation: 用于电压调节器的PWM控制器包括误差放大器，用于根据电压调节器的输出电压和参考电压之间的差产生误差信号;以及比较器，用于将误差信号与斜坡信号进行比较，以产生PWM信号 切换电压调节器的一对高侧和低侧开关以产生输出电压和输出电流。 当输出电流大于阈值时，PWM控制器调整参考电压或斜坡信号的频率，以降低PWM信号的频率，从而降低由开关引起的开关损耗。

公开(公告)号：US07327124B2

公开(公告)日：2008-02-05

申请号：US11388158

申请日：2006-03-24

Applicant: Jing-Meng Liu ,  Chung-Lung Pai ,  Hung-Der Su ,  Wei-Hsin Wei

Inventor： Jing-Meng Liu ,  Chung-Lung Pai ,  Hung-Der Su ,  Wei-Hsin Wei

IPC: G05F1/577

CPC classification number: H02M3/157 ,  H02M3/1588 ,  Y02B70/1466

Abstract: A plurality of switches, an inductor and two capacitors are configured to be a boost-inverting converter. To operate the converter in a boost-inverting mode, a control apparatus and method switch the switches such that the inductor is energized in a first phase, the first capacitor is discharged to produce an inverting voltage in a second phase, and the capacitor Cout1 is discharged to produce the inverting voltage and the second capacitor is charged to produce a boost voltage in a third phase. Therefore, the boost-inverting converter has lower peak inductor current and less power loss, and the limitation to the switch design for the boost-inverting converter is relaxed.

Abstract translation: 多个开关，电感器和两个电容器被配置为升压反相转换器。 为了在升压反转模式下操作转换器，控制装置和方法切换开关使得电感器在第一相中通电，第一电容器被放电以产生第二相的反相电压，并且电容器Cout 1 被放电以产生反相电压，并且第二电容器被充电以在第三相中产生升压电压。 因此，升压反相转换器具有较低的峰值电感电流和较小的功率损耗，并且对升压反相转换器的开关设计的限制放宽。

公开(公告)号：US07274219B2

公开(公告)日：2007-09-25

申请号：US11166134

申请日：2005-06-27

Applicant: Chung-Lung Pai

Inventor： Chung-Lung Pai

IPC: G01R19/00

CPC classification number: G11C7/067 ,  G11C7/062 ,  G11C2207/063

Abstract: An offset current independent sense circuit is switchable between a store state and a sense state. In the store state, the sense circuit stores an offset current to a capacitor, and the influence of the offset current is eliminated by a transistor to regenerate the offset current based on a signal provided by the capacitor in the sense state.

公开(公告)号：US07274182B2

公开(公告)日：2007-09-25

申请号：US11211664

申请日：2005-08-26

Applicant: Kent Huang

Inventor： Kent Huang

IPC: G05F1/565 ,  G05F1/575

CPC classification number: H02M3/158

Abstract: A spring modulation is proposed to regulate the output voltage of a voltage regulator. The spring modulation comprises a differential amplifier to generate a pair of voltage signal and current signal varied with the difference between a reference signal and a feedback signal related to the output voltage, and a PWM generator to generate a PWM signal in response to the pair of voltage signal and current signal to regulate the output voltage, in such a manner that, in load transient, the greater the difference between the feedback signal and reference signal is, the greater the on-time duty-cycle of the PWM signal is.

Abstract translation: 提出了一种弹簧调制来调节电压调节器的输出电压。 弹簧调制包括差分放大器，用于产生一对电压信号和随着参考信号和与输出电压有关的反馈信号之间的差异而变化的电流信号;以及PWM发生器，用于响应于一对 电压信号和电流信号调节输出电压，使得在负载瞬变时，反馈信号和参考信号之差越大，PWM信号的导通时间占空比就越大。