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公开(公告)号：US11689350B2
公开(公告)日：2023-06-27
申请号：US17833971
申请日：2022-06-07
CPC分类号： H04L7/0016 , H04L7/06
摘要： A system includes a first controller configured to transmit a synchronization signal to a second controller. The second controller is configured to produce a PWM signal. The system also includes a counter configured to provide a count for the second controller, where the second controller is configured to initiate rising edges and falling edges of the PWM signal based on the count from the counter. The second controller is also configured to measure an error between a time when the synchronization signal is received at the second controller and an expected time of receipt for the synchronization signal. The second controller is also configured to adjust a period of the counter based at least in part on the error.
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公开(公告)号：US11888482B2
公开(公告)日：2024-01-30
申请号：US17565110
申请日：2021-12-29
摘要： A system comprises a first comparator, a second comparator, a pulse-width modulation (PWM) controller, and a ramp generator. The first comparator has a positive input coupled to a first ramp output of the ramp generator and a negative input configured to receive an input voltage. The second comparator has a positive input configured to receive the input voltage and a negative input coupled to a second ramp output of the ramp generator. The PWM controller is coupled to outputs and control signal inputs of the first and second comparators and has a control output. In some implementations, the ramp generator generates a high-side falling ramp for the first comparator and a low-side rising ramp for the second comparator. In some implementations, the ramp generator includes a first ramp generator for the high-side falling ramp and a second ramp for the low-side rising ramp.
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公开(公告)号：US20180145584A1
公开(公告)日：2018-05-24
申请号：US15876351
申请日：2018-01-22
发明人： Shamim Choudhury , Zhenyu Yu , Zhong Ye
CPC分类号： H02M1/4208 , H02M1/088 , H02M1/4225 , H02M7/217 , H02M2001/009 , Y02B70/126 , Y10T307/406
摘要： A multiple-output integrated power factor correction system includes, for example, a processor that is formed in a substrate and is arranged to monitor each voltage output of two or more output stages of a power supply and in response to generate an individual voltage error signal for each monitored output stage. A combined output voltage error signal is generated in response to each of the individual voltage error signals. The voltage input to the power supply and the total inductor current of the power supply are monitored and used to generate a combined output voltage control signal in response to the monitored input voltage total inductor current as well as the combined output voltage error control signal. Each individual output voltage control signal for each monitored output stage is generated in response to each of the respective generated individual voltage error signals.
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公开(公告)号：US09912229B2
公开(公告)日：2018-03-06
申请号：US14167945
申请日：2014-01-29
发明人： Shamim Choudhury , Zhenyu Yu , Zhong Ye
CPC分类号： H02M1/4208 , H02M1/088 , H02M1/4225 , H02M7/217 , H02M2001/009 , Y02B70/126 , Y10T307/406
摘要： A multiple-output integrated power factor correction system includes, for example, a processor that is formed in a substrate and is arranged to monitor each voltage output of two or more output stages of a power supply and in response to generate an individual voltage error signal for each monitored output stage. A combined output voltage error signal is generated in response to each of the individual voltage error signals. The voltage input to the power supply and the total inductor current of the power supply are monitored and used to generate a combined output voltage control signal in response to the monitored input voltage total inductor current as well as the combined output voltage error control signal. Each individual output voltage control signal for each monitored output stage is generated in response to each of the respective generated individual voltage error signals.
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5.发明公开公开(公告)号：US20240275267A1
公开(公告)日：2024-08-15
申请号：US18167319
申请日：2023-02-10
发明人： Shamim Choudhury , Sheng-Yang Yu
IPC分类号： H02M1/32 , H02M1/00 , H02M3/335 , H03K17/0812
CPC分类号： H02M1/32 , H02M1/0009 , H02M3/33573 , H02M3/33576 , H03K17/08122
摘要： An electronic system for controlling a power converter having an active clamping circuit includes a current sensor configured to sense current through a primary side of a transformer within the power converter, and a comparator sub-system. The comparator sub-system is configured to receive a transformer current signal from the current sensor and generate a trip signal based on a difference between the transformer current signal and a reference signal. The electronic system also includes a pulse width modulator configured to generate a gate input signal for the active clamping circuit based at least in part on the trip signal.
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公开(公告)号：US11011976B2
公开(公告)日：2021-05-18
申请号：US16846494
申请日：2020-04-13
发明人： Manish Bhardwaj , Shamim Choudhury
摘要： A drive circuit includes a transient detector that includes a detector input to receive a loop error signal from a phased locked loop (PLL) and generates a transient detected output signal if a transient is detected in an alternating current (AC) input voltage. A controller includes a controller input to receive the transient detected output signal from the transient detector and a feedback input to sense the AC input voltage provided to a bridge circuit. The controller is configured to apply a PLL angle output signal from the PLL to control switch output signals to the bridge circuit if the transient detected output signal is not generated and configured to apply the AC input voltage sensed from the feedback input to control the switch output signals to the bridge circuit if the transient detected output signal is generated.
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公开(公告)号：US20150188413A1
公开(公告)日：2015-07-02
申请号：US14167945
申请日：2014-01-29
发明人： Shamim Choudhury , Zhenyu Yu , Zhong Ye
CPC分类号： H02M1/4208 , H02M1/088 , H02M1/4225 , H02M7/217 , H02M2001/009 , Y02B70/126 , Y10T307/406
摘要： A multiple-output integrated power factor correction system includes, for example, a processor that is formed in a substrate and is arranged to monitor each voltage output of two or more output stages of a power supply and in response to generate an individual voltage error signal for each monitored output stage. A combined output voltage error signal is generated in response to each of the individual voltage error signals. The voltage input to the power supply and the total inductor current of the power supply are monitored and used to generate a combined output voltage control signal in response to the monitored input voltage total inductor current as well as the combined output voltage error control signal. Each individual output voltage control signal for each monitored output stage is generated in response to each of the respective generated individual voltage error signals.
摘要翻译： 多输出集成功率因数校正系统包括例如形成在衬底中的处理器，并且被配置为监视电源的两个或多个输出级的每个电压输出，并且响应于产生单独的电压误差信号 对于每个监控的输出级。 响应于每个单独的电压误差信号而产生组合的输出电压误差信号。 对电源输入的电压和电源的总电感电流进行监控，并用于响应于监控的输入电压总电感电流以及组合的输出电压误差控制信号，产生组合的输出电压控制信号。 每个被监视的输出级的每个单独的输出电压控制信号响应于每个相应产生的各个电压误差信号而产生。
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公开(公告)号：US11356238B1
公开(公告)日：2022-06-07
申请号：US17328561
申请日：2021-05-24
摘要： A system includes a first controller configured to transmit a synchronization signal to a second controller. The second controller is configured to produce a PWM signal. The system also includes a counter configured to provide a count for the second controller, where the second controller is configured to initiate rising edges and falling edges of the PWM signal based on the count from the counter. The second controller is also configured to measure an error between a time when the synchronization signal is received at the second controller and an expected time of receipt for the synchronization signal. The second controller is also configured to adjust a period of the counter based at least in part on the error.
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公开(公告)号：US20200313548A1
公开(公告)日：2020-10-01
申请号：US16846494
申请日：2020-04-13
发明人： Manish Bhardwaj , Shamim Choudhury
IPC分类号： H02M1/42
摘要： A drive circuit includes a transient detector that includes a detector input to receive a loop error signal from a phased locked loop (PLL) and generates a transient detected output signal if a transient is detected in an alternating current (AC) input voltage. A controller includes a controller input to receive the transient detected output signal from the transient detector and a feedback input to sense the AC input voltage provided to a bridge circuit. The controller is configured to apply a PLL angle output signal from the PLL to control switch output signals to the bridge circuit if the transient detected output signal is not generated and configured to apply the AC input voltage sensed from the feedback input to control the switch output signals to the bridge circuit if the transient detected output signal is generated.
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公开(公告)号：US10476375B2
公开(公告)日：2019-11-12
申请号：US15876351
申请日：2018-01-22
发明人： Shamim Choudhury , Zhenyu Yu , Zhong Ye
摘要： A multiple-output integrated power factor correction system includes, for example, a processor that is formed in a substrate and is arranged to monitor each voltage output of two or more output stages of a power supply and in response to generate an individual voltage error signal for each monitored output stage. A combined output voltage error signal is generated in response to each of the individual voltage error signals. The voltage input to the power supply and the total inductor current of the power supply are monitored and used to generate a combined output voltage control signal in response to the monitored input voltage total inductor current as well as the combined output voltage error control signal. Each individual output voltage control signal for each monitored output stage is generated in response to each of the respective generated individual voltage error signals.
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