公开(公告)号：US20040178779A1

公开(公告)日：2004-09-16

申请号：US10806605

申请日：2004-03-23

Applicant: INTERSIL AMERICAS INC.

Inventor： Michael M. Walters ,  Matthew B. Harris ,  Bogdan M. Duduman

IPC: H02M003/24

CPC classification number: H02M3/1588 ,  H02M3/156 ,  H02M3/1584 ,  H02M3/285 ,  H02M2001/0009 ,  Y02B70/1466

Abstract: A DC-to-DC converter includes one or more power switches, a pulse width modulation circuit for generating control pulses for the power switches, and an output inductor connected to the power switches. A thermally compensated current sensor is connected to an intrinsic current sensing element exhibiting a temperature-based parameter non-linearity. The thermally compensated current sensor has a temperature coefficient that substantially matches a temperature coefficient of an intrinsic power converter element used to measure current flow, thus linearizing the current measurement. Also, a current feedback loop circuit cooperates with the pulse width modulation circuit to control the power switches responsive to the thermally compensated current sensor.

公开(公告)号：US20040070382A1

公开(公告)日：2004-04-15

申请号：US10673684

申请日：2003-09-29

Applicant: Intersil Americas Inc.

Inventor： Michael M. Walters ,  Xuening Li ,  Thomas A. Jochum

IPC: G05F001/40

CPC classification number: H02J1/102 ,  H02M3/156 ,  H02M3/1584

Abstract: A multiphase ripple voltage regulator generator employs a hysteretic comparator referenced to upper and lower voltage thresholds. The hysteretic comparator monitors a master ripple voltage waveform developed across a capacitor supplied with a current proportional to the difference between the output voltage and either the input voltage or ground. The output of the hysteretic comparator generates a master clock signal that is sequentially coupled to PWM latches, the states of which define the durations of respective components of the synthesized ripple voltage. A respective PWM latch has a first state initiated by a selected master clock signal and terminated by an associated phase voltage comparator that monitors a respective phase node voltage.

Abstract translation: 多相纹波电压调节器采用基于上限和下限电压阈值的滞后比较器。 迟滞比较器监视在电容器上产生的主纹波电压波形，其电流与输出电压和输入电压或地之间的差成比例。 迟滞比较器的输出产生顺序耦合到PWM锁存器的主时钟信号，其状态限定合成纹波电压的各个分量的持续时间。 相应的PWM锁存器具有由所选择的主时钟信号启动的第一状态，并且由相关联的相位电压比较器终止，监视相应的相位节点电压。

公开(公告)号：US20040217744A1

公开(公告)日：2004-11-04

申请号：US10858586

申请日：2004-06-02

Applicant: INTERSIL AMERICAS INC.

Inventor： Michael M. Walters ,  Matthew B. Harris ,  Bogdan M. Duduman

IPC: H02M001/00

CPC classification number: H02M3/1588 ,  H02M3/156 ,  H02M3/1584 ,  H02M3/285 ,  H02M2001/0009 ,  Y02B70/1466

Abstract: A DC-to-DC converter includes one or more power switches, a pulse width modulation circuit for generating control pulses for the power switches, and an output inductor connected to the power switches. A thermally compensated current sensor is connected to an intrinsic current sensing element exhibiting a temperature-based parameter non-linearity. The thermally compensated current sensor has a temperature coefficient that substantially matches a temperature coefficient of an intrinsic power converter element used to measure current flow, thus linearizing the current measurement. Also, a current feedback loop circuit cooperates with the pulse width modulation circuit to control the power switches responsive to the thermally compensated current sensor.

公开(公告)号：US20030142519A1

公开(公告)日：2003-07-31

申请号：US10236787

申请日：2002-09-06

Applicant: Intersil Americas Inc.

Inventor： Michael M. Walters ,  Vladimir Muratov ,  Stefan Wlodzimierz Wiktor

IPC: H02M007/04

CPC classification number: H02M3/156

Abstract: A synthetic ripple regulator for a DC-DC converter generates an auxiliary voltage waveform that effectively replicates the waveform ripple current through an output inductor, and uses the auxiliary voltage waveform to control toggling of a hysteretic comparator. In a non-limiting implementation, a transconductance amplifier monitors the voltage across the inductor, and supplies an inductor voltage-representative current to a ripple waveform capacitor, so as to produce the auxiliary voltage waveform. Using the replicated inductor current for ripple regulation results in low output ripple, input voltage feed forward, and simplified compensation.

Abstract translation: 用于DC-DC转换器的合成脉动调节器产生辅助电压波形，可有效地复制通过输出电感器的波形纹波电流，并使用辅助电压波形来控制迟滞比较器的切换。 在非限制性实现中，跨导放大器监测电感器两端的电压，并将电感电压代表电流提供给纹波波形电容器，以产生辅助电压波形。 使用复制电感电流进行纹波调节可以实现低输出纹波，输入电压前馈和简化补偿。

公开(公告)号：US20030038614A1

公开(公告)日：2003-02-27

申请号：US10219555

申请日：2002-08-15

Applicant: Intersil Americas Inc.

Inventor： Michael M. Walters ,  Matthew B. Harris ,  Bogdan M. Duduman

IPC: G05F001/40

CPC classification number: H02M3/1588 ,  H02M3/156 ,  H02M3/1584 ,  H02M3/285 ,  H02M2001/0009 ,  Y02B70/1466

Abstract: A DC-to-DC converter includes one or more power switches, a pulse width modulation circuit for generating control pulses for the power switches, and an output inductor connected to the power switches. A thermally compensated current sensor is connected to an intrinsic current sensing element exhibiting a temperature-based parameter non-linearity. The thermally compensated current sensor has a temperature coefficient that substantially matches a temperature coefficient of an intrinsic power converter element used to measure current flow, thus linearizing the current measurement. Also, a current feedback loop circuit cooperates with the pulse width modulation circuit to control the power switches responsive to the thermally compensated current sensor.

Abstract translation: DC-DC转换器包括一个或多个电源开关，用于产生功率开关的控制脉冲的脉冲宽度调制电路和连接到电源开关的输出电感器。 热补偿电流传感器连接到呈现基于温度的参数非线性的本征电流感测元件。 热补偿电流传感器具有与用于测量电流的本征功率转换器元件的温度系数基本匹配的温度系数，从而线性化电流测量。 此外，电流反馈回路电路与脉宽调制电路配合，以响应于热补偿电流传感器来控制功率开关。