公开(公告)号：US06495995B2

公开(公告)日：2002-12-17

申请号：US09802840

申请日：2001-03-09

申请人： Terry J. Groom ,  Stuart Pullen ,  Kwang H. Liu

发明人： Terry J. Groom ,  Stuart Pullen ,  Kwang H. Liu

IPC分类号： G05F140

CPC分类号： H02M3/1584 ,  H02M3/1588 ,  H02M2003/1586 ,  Y02B70/1466

摘要： A ripple-mode controller provides reliable operation in multi-phase power supply circuits, over a variety of operating conditions. Cross-phase blanking allows the controller to preserve the desired phase relationship between the switching pulses its provides to the different output phases, and permits the controller to operate each output phase at nearly 100% duty cycles. Active current sharing compliments blanking operations by adjusting the width of switching pulses the controller provides to one or more of the output phases based on detecting load current imbalances between the different output phases. With active current sharing, the controller prevents one or more output phases from carrying excessive portions of the load current. Further complimenting its operation, the controller may include virtual ripple generation to increase the noise immunity of its ripple-mode regulation.

摘要翻译： 纹波模式控制器在多种工作条件下，可在多相电源电路中提供可靠的操作。 相位消隐允许控制器保持其提供给不同输出相位的开关脉冲之间所需的相位关系，并且允许控制器以近100％的占空比操作每个输出相位。 有源电流分配通过基于检测不同输出相之间的负载电流不平衡来调节控制器提供给一个或多个输出相位的开关脉冲的宽度来进行消隐操作。 通过有源电流共享，控制器可防止一个或多个输出相承载过载部分负载电流。 进一步补充其操作，控制器可以包括虚拟纹波生成以增加其纹波模式调节的抗噪声性。

公开(公告)号：US06861824B1

公开(公告)日：2005-03-01

申请号：US10193381

申请日：2002-07-10

申请人： Kwang H. Liu ,  Sorin L. Negru ,  Fu-Yuan Shih

发明人： Kwang H. Liu ,  Sorin L. Negru ,  Fu-Yuan Shih

IPC分类号： H02J7/00 ,  H02J7/06

CPC分类号： H02J7/0068

摘要： A charging system that concurrently charges a main system and a battery for powering the main system when the charging system is connected to an adapter. The charging system includes a current sensing resistor, a first current control circuit for regulating the current in a linear battery charger and a second current control circuit for controlling the maximum adapter current. The charging system further includes a first temperature control circuit for regulating the current in the battery charger and a second temperature control circuit for controlling the maximum power dissipation of the charging system. The charging system further includes a linear regulator for providing power to the main system from the adapter and a main system voltage control circuit and a battery voltage control circuit. The charging system apportions the adapter current between the main system and the battery charger giving priority to the main system.

摘要翻译： 充电系统，当充电系统连接到适配器时，同时对主系统和电池供电，为主系统供电。 充电系统包括电流检测电阻器，用于调节线性电池充电器中的电流的第一电流控制电路和用于控制最大适配器电流的第二电流控制电路。 充电系统还包括用于调节电池充电器中的电流的第一温度控制电路和用于控制充电系统的最大功率耗散的第二温度控制电路。 充电系统还包括线性调节器，用于从适配器向主系统供电，以及主系统电压控制电路和电池电压控制电路。 充电系统对主系统和电池充电器之间的适配器电流进行分配，优先考虑主系统。

公开(公告)号：US06903535B2

公开(公告)日：2005-06-07

申请号：US10414952

申请日：2003-04-16

申请人： Kwang H. Liu ,  Sorin L. Negru

发明人： Kwang H. Liu ,  Sorin L. Negru

IPC分类号： H02M3/158 ,  H03K17/06 ,  G05F1/652

CPC分类号： H03K17/063 ,  H02M3/1588 ,  H02M2001/008 ,  Y02B70/1466

摘要： A gate drive supply circuit generating a high-level supply voltage and a low-level supply voltage for driving N-type high-side and low-side power MOSFETs in a multiple-output, low-voltage DC-DC converter integrated circuit. The gate drive supply circuit includes a boost regulator for generating the low-level supply voltage and a charge pump doubler for generating the high-level supply voltage. Both the high-level supply voltage and the low-level supply voltage are distributed to one or more regulators, including but not limited to buck or boost type regulators.

摘要翻译： 在多输出低压DC-DC转换器集成电路中产生用于驱动N型高侧​​和低端功率MOSFET的高电平电源电压和低电平电源电压的栅极驱动电源电路。 栅极驱动电源电路包括用于产生低电平电源电压的升压调节器和用于产生高电平电源电压的电荷泵倍增器。 高电平电源电压和低电平电源都分配到一个或多个稳压器，包括但不限于降压或升压型稳压器。

公开(公告)号：US5892336A

公开(公告)日：1999-04-06

申请号：US132390

申请日：1998-08-11

申请人： Yung Lin ,  Kwang H. Liu ,  John Chou

发明人： Yung Lin ,  Kwang H. Liu ,  John Chou

IPC分类号： G05F3/04 ,  H05B41/232 ,  G05F1/00

CPC分类号： H05B41/232

摘要： An electrical circuit for simultaneously energizing at least a pair of CCFLs that are connected in series. The circuit also includes a transformer having a primary winding adapted to receive an alternating current. A secondary winding is coupled in series with the CCFLs to energize their operation. A shunt capacitor, connected in parallel across one CCFL, significantly reduces the peak voltage that must be applied across the CCFLs. Usually, the circuit also includes an isolation capacitor connected in series between the CCFLs and the secondary winding of the transformer. The isolation capacitor provides both DC blocking and electrical isolation between the secondary winding and the CCFLs.

摘要翻译： 一种用于同时激励至少一对串联连接的CCFL的电路。 电路还包括具有适于接收交流电的初级绕组的变压器。 次级绕组与CCFL串联耦合以激励它们的操作。 在一个CCFL上并联连接的并联电容器显着降低了跨CCFL必须施加的峰值电压。 通常，电路还包括串联连接在CCFL和变压器的次级绕组之间的隔离电容器。 隔离电容器在次级绕组和CCFL之间提供直流阻塞和电隔离。

公开(公告)号：US06707280B1

公开(公告)日：2004-03-16

申请号：US10238078

申请日：2002-09-09

申请人： Kwang H. Liu ,  Sorin L. Negru ,  Fu-Yuan Shih

发明人： Kwang H. Liu ,  Sorin L. Negru ,  Fu-Yuan Shih

IPC分类号： G05F1618

CPC分类号： G05F1/618

摘要： A voltage regulator for providing a bidirectional current and a regulated voltage to a load. The voltage regulator regulates the output voltage at one half the level of the input voltage using a voltage doubler circuit in reverse. The regulator provides current to the load when the output voltage drops and receives current from the load when the output voltage rises. The voltage regulator is particularly suited to supplying a termination voltage to multiple line drivers in a DDR DRAM system, where the line drives require an active termination voltage to reduce power. Additionally, a pair of linear regulators, one for clamping the output voltage at a predetermined low voltage level and for supplying additional current demanded by the load, and the other for clamping the output voltage at a predetermined high voltage level and for receiving additional current supplied by the load, is included.

摘要翻译： 用于向负载提供双向电流和调节电压的电压调节器。 电压调节器使用相反的倍压器电路将输出电压调节到输入电压电平的一半。 当输出电压下降时，稳压器向负载提供电流，并在输出电压上升时从负载接收电流。 电压调节器特别适用于向DDR DRAM系统中的多个线路驱动器提供终端电压，其中线路驱动器需要主动终端电压以降低功率。 另外，一对线性稳压器，一个用于将输出电压钳位在预定的低电压电平并用于提供由负载所需的额外电流，另一个用于将输出电压钳位在预定的高电压电平并用于接收所提供的附加电流 通过负载被包括。

公开(公告)号：USD425233S

公开(公告)日：2000-05-16

申请号：US099474

申请日：1999-01-20

申请人： Kwang H. Liu

设计人： Kwang H. Liu

公开(公告)号：US07106566B2

公开(公告)日：2006-09-12

申请号：US10615458

申请日：2003-07-08

申请人： Kwang H. Liu ,  Sorin Negru ,  George Hsieh ,  Jacky Chen ,  Frank Shih ,  Scott Wu

发明人： Kwang H. Liu ,  Sorin Negru ,  George Hsieh ,  Jacky Chen ,  Frank Shih ,  Scott Wu

IPC分类号： H02H3/00

CPC分类号： H02H3/202 ,  H02H3/207 ,  H02H11/002

摘要： An integrated circuit (IC) has logic and timing circuits that are coupled to discrete circuitry to provide protection and indications whenever an AC adapter that is faulty or has improper voltage levels or polarity are plugged into a system. In particular, the IC device provides over-voltage, under-voltage, and reversed-polarity protections to an electronic system to keep the electronic system from being damaged by an alternating current (AC) adapter having an improper voltage range or voltage polarity. It also provides a protection that prevents an adapter from powering a host system that has a short-circuit fault.

摘要翻译： 集成电路（IC）具有耦合到分立电路的逻辑和定时电路，以便每当故障或具有不正确的电压电平或极性的AC适配器插入系统时提供保护和指示。 特别地，IC器件向电子系统提供过电压，欠压和反向极性保护，以保持电子系统不被具有不正确的电压范围或电压极性的交流（AC）适配器损坏。 它还提供防止适配器为具有短路故障的主机系统供电的保护。

公开(公告)号：US06798177B1

公开(公告)日：2004-09-28

申请号：US10272538

申请日：2002-10-15

申请人： Kwang H. Liu ,  Sorin L. Negru ,  Fu-Yuan Shih ,  George Hsieh

发明人： Kwang H. Liu ,  Sorin L. Negru ,  Fu-Yuan Shih ,  George Hsieh

IPC分类号： G05F1613

CPC分类号： H02M3/1582 ,  H02M2001/007

摘要： A power converter including a first stage, a reservoir capacitor and a second stage. The first stage converts the voltage of a primary energy source, such as a battery, to a voltage on the reservoir capacitor, which stores a large amount of energy in the form of a voltage substantially larger than the voltage of the primary energy source. The second stage converts the voltage on the reservoir capacitor to a substantially constant voltage for a load device that demands current having the form of large, short, current pulses. The cascaded converter prevents the pulsating load currents of the load device, such as a GSM power amplifier, from causing a severe voltage loss at the battery. This increases the power available from the battery and reduces loses from the internal resistance of the battery.

摘要翻译： 一种功率转换器，包括第一级，储存电容器和第二级。 第一阶段将诸如电池的一次能源的电压转换为储存电容器上的电压，其存储大量能量，其形式的电压基本上大于一次能源的电压。 第二阶段将储层电容器上的电压转换为需要具有大的，短的电流脉冲形式的电流的负载装置的基本恒定的电压。 级联转换器可以防止诸如GSM功率放大器之类的负载装置的脉动负载电流在电池上造成严重的电压损失。 这增加了电池的可用功率，并减少了电池的内部电阻的损失。

公开(公告)号：US5903764A

公开(公告)日：1999-05-11

申请号：US850335

申请日：1997-05-02

申请人： You-Yuh Shyr ,  Kwang H. Liu ,  Sterling Du

发明人： You-Yuh Shyr ,  Kwang H. Liu ,  Sterling Du

IPC分类号： G06F1/28 ,  G01R31/36 ,  G06F1/26 ,  H02J7/00 ,  H02J7/02 ,  H02J7/34 ,  H02J9/00 ,  H02J9/06 ,  G06F1/00 ,  H01M10/44 ,  H02J7/04

CPC分类号： H02J7/0022 ,  H02J7/0004 ,  H02J7/0024 ,  G01R31/36 ,  Y10T307/615

摘要： A controller for a smart battery selector included in a portable device has a plurality of switch-drivers at least equal to a plurality of smart batteries. The batteries provide battery-state data via a bus to a host computer included in the portable device. Each switch-driver effects selection of an associated battery. A control electronic-circuit in the controller directs operation of the switch-drivers for selecting the battery so that at any instant only one battery powers the portable device. A bus-snooper circuit permits the controller to independently monitor the bus for battery-condition alarm-messages. The controller may respond to such messages by selecting a different battery. The controller may also select a single battery for recharging, and may terminate charging upon receiving a battery overcharge message.

摘要翻译： 包括在便携式设备中的智能电池选择器的控制器具有至少等于多个智能电池的多个开关驱动器。 电池通过总线向包含在便携式设备中的主计算机提供电池状态数据。 每个开关驱动器都会影响相关电池的选择。 控制器中的控制电子电路引导用于选择电池的开关驱动器的操作，使得在任何时刻只有一个电池为便携式设备供电。 总线监听电路允许控制器独立监控总线的电池状态报警信息。 控制器可以通过选择不同的电池来响应这样的消息。 控制器还可以选择单个电池进行充电，并且可以在接收到电池过充电消息时终止充电。

公开(公告)号：US07057310B2

公开(公告)日：2006-06-06

申请号：US10377781

申请日：2003-03-04

申请人： Kwang H. Liu ,  Sorin L. Negru ,  Terry Groom ,  Fu-Yuan Shih ,  Te-Jen Hsieh

发明人： Kwang H. Liu ,  Sorin L. Negru ,  Terry Groom ,  Fu-Yuan Shih ,  Te-Jen Hsieh

IPC分类号： H01H35/00 ,  H02B1/24

CPC分类号： G05F1/575 ,  Y10T307/469 ,  Y10T307/832

摘要： A dual-output voltage regulator is disclosed, which provides a first terminal voltage and a second terminal voltage to DDR DRAM. The dual-output voltage regulator comprises a first regulator unit for receiving an input voltage and providing the first terminal voltage via a first transistor unit; and a second regulator unit for receiving the input voltage and the first terminal voltage in order to output the second terminal voltage, wherein the second terminal voltage is half of the first terminal voltage.

摘要翻译： 公开了一种双输出电压调节器，其向DDR DRAM提供第一端电压和第二端电压。 双输出电压调节器包括用于接收输入电压并经由第一晶体管单元提供第一端电压的第一调节器单元; 以及第二调节器单元，用于接收输入电压和第一端电压以输出第二端电压，其中第二端电压是第一端电压的一半。