公开(公告)号：US20050207080A1

公开(公告)日：2005-09-22

申请号：US10875697

申请日：2004-06-24

申请人： James Leith ,  Gustavo Mehas ,  Brandon Day

发明人： James Leith ,  Gustavo Mehas ,  Brandon Day

IPC分类号： H02H3/00 ,  H02H7/12 ,  H02M1/32

CPC分类号： H02M1/32 ,  H02H7/1213

摘要： Apparatus for providing over-current protection in a power converter device includes a first circuit for providing high-side sinking over-current protection for the power converter device responsive to a phase signal and a high-side over-current signal of the power converter device. A second circuit provides low-side sinking over-current protection for the power converter device responsive to the phase signal and the low-side over-current signal of the power converter device. Finally, a third circuit provides low-side sourcing over-current protection responsive to the phase signal, the low-side over-current protection signal and a power ground signal of the power converter device.

摘要翻译： 用于在功率转换器装置中提供过电流保护的装置包括：第一电路，用于响应于功率转换器装置的相位信号和高侧过电流信号，为功率转换器装置提供高侧吸收过电流保护 。 第二电路响应于功率转换器装置的相位信号和低侧过电流信号，为功率转换器装置提供低边吸收过电流保护。 最后，第三电路响应于相位信号，低侧过流保护信号和功率转换器装置的电源接地信号，提供低端采样过电流保护。

公开(公告)号：US20050206360A1

公开(公告)日：2005-09-22

申请号：US10915906

申请日：2004-08-11

申请人： Gustavo Mehas ,  James Leith ,  Brandon Day

发明人： Gustavo Mehas ,  James Leith ,  Brandon Day

IPC分类号： G05F1/40 ,  H02M1/36

CPC分类号： H02M1/36 ,  Y10S323/901

摘要： An apparatus for reducing surge currents during startup of a voltage regulator is disclosed that includes circuitry for maintaining a voltage at an FB pin of the voltage regulator substantially equivalent to an output voltage of the voltage regulator.

摘要翻译： 公开了一种用于在电压调节器启动期间减小浪涌电流的装置，其包括用于将电压调节器的FB引脚上的电压维持在基本上等于电压调节器的输出电压的电路。

公开(公告)号：USD448690S1

公开(公告)日：2001-10-02

申请号：US29134057

申请日：2000-12-12

申请人： Brandon Day

设计人： Brandon Day

公开(公告)号：US20050200389A1

公开(公告)日：2005-09-15

申请号：US10925744

申请日：2004-08-25

申请人： Brandon Day ,  James Leith ,  Gustavo Mehas

发明人： Brandon Day ,  James Leith ,  Gustavo Mehas

IPC分类号： H03C3/00

CPC分类号： H03K4/502

摘要： A frequency programmable feed forward oscillator and triangular wave generator is disclosed having a first input for receiving an input voltage and a second input for receiving an input current. Circuitry within the device responsive to the input voltage scales the amplitude of a triangle wave form according to the provided input voltage and provides the scaled output voltage at a first output. In conjunction, the circuitry also generates a scaled PWM frequency responsive to the provided input current and provides this at a second output.

摘要翻译： 公开了一种频率可编程前馈振荡器和三角波发生器，其具有用于接收输入电压的第一输入端和用于接收输入电流的第二输入端。 根据输入电压，器件内的电路根据提供的输入电压对三角形波形的幅度进行缩放，并在第一输出端提供缩放的输出电压。 结合起来，电路还响应于所提供的输入电流产生定标的PWM频率，并将其提供给第二输出。

公开(公告)号：US20050194951A1

公开(公告)日：2005-09-08

申请号：US10865373

申请日：2004-06-10

申请人： Gustavo Mehas ,  James Leith ,  Brandon Day

发明人： Gustavo Mehas ,  James Leith ,  Brandon Day

IPC分类号： G05F1/40 ,  H02M3/07 ,  H02M3/10 ,  H02M3/155

CPC分类号： H02M1/36 ,  Y10S323/901

摘要： A method of starting a DC-DC converter into a precharged output voltage including generating a reference voltage having a linear relationship with the output voltage such that the reference voltage ranges between a minimum and maximum voltage level of a PWM triangular waveform as the output voltage ranges between zero and an input voltage level, and enabling output switching of the DC-DC converter when the reference voltage is approximately equal to a compensation signal generated by an error amplifier comparing the reference voltage with a feedback signal representative of the output voltage. Generating a reference voltage may include applying a first current based on the input voltage through two resistors to develop the minimum and maximum voltage levels, applying the first current in one direction through a third resistor, and applying a second current based on the output voltage through the third resistor in the opposite direction.

摘要翻译： 一种将DC-DC转换器启动为预充电输出电压的方法，包括产生与输出电压具有线性关系的参考电压，使得参考电压在PWM三角波形的最小和最大电压电平之间的范围内，作为输出电压范围 在零和输入电压电平之间，并且当参考电压近似等于由误差放大器产生的补偿信号时，DC-DC转换器的输出切换，其将参考电压与表示输出电压的反馈信号进行比较。 产生参考电压可以包括基于输入电压施加通过两个电阻器的第一电流以产生最小和最大电压电平，通过第三电阻器将一个电流施加到一个方向，并且基于输出电压通过施加第二电流 第三个电阻器在相反方向。

公开(公告)号：USD462628S1

公开(公告)日：2002-09-10

申请号：US29134067

申请日：2000-12-12

申请人： Brandon Day

设计人： Brandon Day

公开(公告)号：US20050206422A1

公开(公告)日：2005-09-22

申请号：US10917628

申请日：2004-08-13

申请人： Gustavo Mehas ,  Chun Cheung ,  Brandon Day

发明人： Gustavo Mehas ,  Chun Cheung ,  Brandon Day

IPC分类号： H02M3/158 ,  H03K5/153 ,  H03K5/22

CPC分类号： H02M3/1588 ,  H02M2001/0012 ,  H02M2001/0038 ,  Y02B70/1466

摘要： An apparatus for providing programmable hysteresis control using an enable pin of a device is disclosed. An enable pin is configured to receive an input signal to enable and disable an associated device responsive to the input signal. A current sink is attached to the enable pin and is responsive to circuitry that disables the current sink responsive to application of the input signal at a first voltage level and enables the current sink responsive to application of the input signal at a second voltage level.

摘要翻译： 公开了一种使用设备的使能引脚提供可编程滞回控制的装置。 启用引脚被配置为接收输入信号以响应于输入信号来启用和禁用相关联的设备。 电流吸收器连接到使能引脚，并且响应于电路，其响应于在第一电压电平处施加输入信号而禁用电流宿，并且能够使电流宿响应于第二电压电平上的输入信号的应用。

公开(公告)号：US20050110561A1

公开(公告)日：2005-05-26

申请号：US10813254

申请日：2004-03-30

申请人： Gustavo Mehas ,  James Leith ,  Brandon Day

发明人： Gustavo Mehas ,  James Leith ,  Brandon Day

IPC分类号： G01R31/30 ,  G05F1/10 ,  G11C11/34 ,  H02M3/04 ,  H03F3/45

CPC分类号： G01R31/3004 ,  G11C29/12005 ,  H03F3/45174 ,  H03F3/45475 ,  H03F3/45928

摘要： An IC including a margining control amplifier circuit, first and second offset pins, a margining control pin, select logic, and a mirror amplifier circuit. The margining control amplifier circuit drives current at an output to control voltage at an input based on a reference voltage. The first and second offset pins are provided to couple an external margining voltage divider. The margining control pin has at least two states including an up state and a down state. The select logic selectively switches the output of the margining control amplifier circuit between the first and second offset pins and selectively switches the input of the margining control amplifier circuit between the second and first offset pins based on a state of the margining control pin. The mirror amplifier circuit mirrors voltage across the first and second offset pins across a first margining resistor.

公开(公告)号：US20050110472A1

公开(公告)日：2005-05-26

申请号：US10787518

申请日：2004-02-26

申请人： Matthew Harris ,  James Leith ,  Brandon Day

发明人： Matthew Harris ,  James Leith ,  Brandon Day

IPC分类号： G05F1/40 ,  H02M3/158

CPC分类号： H02M3/1584

摘要： A PWM system that minimizes output ripple of a multiphase DC-DC converter which converts N input voltages including at least one dissimilar input voltage. The PWM system includes PWM waveform logic that generates N PWM signals including a PWM signal for each of the N input voltages, and PWM control logic that optimizes relative phases of the N PWM signals based on voltage levels of the N input voltages. Various circuits and/or methods are contemplated for optimizing phase, including, for example, centering pulses for each PWM cycle, distributing pulses based on predetermined optimal phase angles, determining input voltage levels and selecting predetermined optimal phase angles, generating phase signals employing predetermined phase angles, measuring input voltages and calculating optimal phase angles, and using PLL logic or the like to measure and equalize off-times between PWM pulses.

摘要翻译： 一种PWM系统，其最小化多相DC-DC转换器的输出纹波，其转换包括至少一个不同输入电压的N个输入电压。 PWM系统包括产生N个PWM信号的PWM波形逻辑，包括N个输入电压中的每一个的PWM信号，以及基于N个输入电压的电压电平优化N个PWM信号的相对相位的PWM控制逻辑。 考虑各种电路和/或方法来优化相位，包括例如用于每个PWM周期的对中脉冲，基于预定的最佳相位角分配脉冲，确定输入电压电平并选择预定的最佳相位角，使用预定相位产生相位信号 角度，测量输入电压和计算最佳相位角，并使用PLL逻辑等来测量和均衡PWM脉冲之间的关闭时间。