-
公开(公告)号：US20130002219A1
公开(公告)日：2013-01-03
申请号：US13174225
申请日：2011-06-30
申请人： Kevin D'Angelo , Andrew Whyte , Gustavo Mehas
发明人： Kevin D'Angelo , Andrew Whyte , Gustavo Mehas
IPC分类号： G05F1/00
CPC分类号： H05B33/0815 , H05B33/0812 , H05B33/0848
摘要： An integrated circuit contains a current sink that is used to control a channel of varying forward voltage, with a goal of maintaining a minimally sufficient voltage across the current sink. A target voltage for the current sink return is determined, and a switched inductor is used to maintain said voltage. Various target determination schemes are possible, and various enhancements improve startup time, efficiency, and effectiveness.
摘要翻译： 集成电路包含用于控制正向电压变化的通道的电流吸收器，其目标是在电流吸收器两端保持最低的电压。 确定电流吸收器返回的目标电压，并且使用开关电感器来维持所述电压。 各种目标确定方案是可能的，并且各种增强可以提高启动时间，效率和有效性。
-
2.发明申请Apparatus for offset correcting high-side and low-side sinking/sourcing over-current protection 有权用于偏移校正高边和低侧沉/源过电流保护的装置公开(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
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：US20050088212A1
公开(公告)日：2005-04-28
申请号：US10775560
申请日：2004-02-10
申请人： James Leith , Gustavo Mehas
发明人： James Leith , Gustavo Mehas
CPC分类号： H02M1/36 , H02M3/156 , Y10S323/901
摘要： A startup circuit for a power converter including an amplifier circuit, a comparator, and startup logic. The power converter includes an error amplifier that compares an output sense signal with a startup reference signal and that provides a compensation signal. The amplifier circuit charges the startup reference signal to a predetermined reference level based on a second reference signal in response to a start signal. The comparator determines when the compensation signal reaches a predetermined ramp level and asserts a startup complete signal indicative thereof. The startup logic provides the start signal and provides an output enable signal in response to the startup complete signal. The output enable signal enables output switching to initiate normal regulation operation of the output voltage. In one embodiment, the predetermined ramp level is approximately the center voltage of a sawtooth regulation waveform used for PWM modulation.
摘要翻译： 一种用于功率转换器的启动电路，包括放大器电路，比较器和启动逻辑。 功率转换器包括误差放大器，其将输出感测信号与启动参考信号进行比较，并提供补偿信号。 放大器电路响应于起始信号，基于第二参考信号将启动参考信号充电到预定参考电平。 比较器确定补偿信号何时达到预定的斜坡电平并且断言指示其的启动完成信号。 启动逻辑提供启动信号，并响应于启动完成信号提供输出使能信号。 输出使能信号使输出开关能够启动输出电压的正常调节操作。 在一个实施例中，预定斜坡电平近似为用于PWM调制的锯齿调节波形的中心电压。
-
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
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：US20050206355A1
公开(公告)日：2005-09-22
申请号：US10919152
申请日：2004-08-16
申请人： James Leith , Gustavo Mehas , Bogdan Duduman
发明人： James Leith , Gustavo Mehas , Bogdan Duduman
IPC分类号： G05F1/40
CPC分类号： G05F1/40
摘要： A voltage regulator includes a voltage source for providing an input voltage. The regulator includes circuitry responsive to the input voltage for generating a regulated output voltage. The circuitry enables selection of one of internal linear voltage regulation or external linear voltage regulation for generating the regulated output voltage.
摘要翻译： 电压调节器包括用于提供输入电压的电压源。 调节器包括响应于输入电压以产生调节输出电压的电路。 该电路可选择内部线性电压调节或外部线性电压调节，以产生稳压输出电压。
-
公开(公告)号：US08810216B2
公开(公告)日：2014-08-19
申请号：US13174225
申请日：2011-06-30
申请人： Kevin D'Angelo , Andrew Whyte , Gustavo Mehas
发明人： Kevin D'Angelo , Andrew Whyte , Gustavo Mehas
CPC分类号： H05B33/0815 , H05B33/0812 , H05B33/0848
摘要： An integrated circuit contains a current sink that is used to control a channel of varying forward voltage, with a goal of maintaining a minimally sufficient voltage across the current sink. A target voltage for the current sink return is determined, and a switched inductor is used to maintain said voltage. Various target determination schemes are possible, and various enhancements improve startup time, efficiency, and effectiveness.
摘要翻译： 集成电路包含用于控制正向电压变化的通道的电流吸收器，其目标是在电流吸收器两端保持最低的电压。 确定电流吸收器返回的目标电压，并且使用开关电感器来维持所述电压。 各种目标确定方案是可能的，并且各种增强可以提高启动时间，效率和有效性。
-
7.发明申请公开(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
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：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
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
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.
-
-
-
-
-
-
-
-
-
搜索结果
10 条记录 (耗时 0.01 秒)
