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公开(公告)号：US10601333B2
公开(公告)日：2020-03-24
申请号：US16109254
申请日：2018-08-22
摘要： An isolated switched-mode power converter converts power from an input source into power for an output load. Power switches within a primary-side power stage control the amount of power input to the power converter and, ultimately, provided to the output load. A digital controller on the secondary side of the power converter generates signals to control the power switches. This generation is based upon closed-loop (feedback) control as well as feedforward control. The feedforward control compensates for variations in the voltage of the input source. The input voltage is estimated by sensing a rectified voltage at a node between a secondary winding of the isolation transformer and an output filter. The feedforward compensation modifies the generated switch control signals based upon the sensed rectified voltage.
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2.发明申请公开(公告)号：US20200083813A1
公开(公告)日：2020-03-12
申请号：US16123364
申请日：2018-09-06
摘要： An isolated switched-mode power converter converts power from an input source into power for an output load. Power switches within a primary-side power stage control the amount of power input to the power converter and, ultimately, provided to the output load. A digital controller on the secondary side of the power converter generates signals to control the power switches. This controller also senses a rectified voltage on the secondary side of the power converter and uses this sensed voltage to detect fault conditions of the primary side. For example, the sensed rectified voltage is used to detect undervoltage or overvoltage conditions of the input power source of the power converter, or faulty power switches within the primary-side power stage.
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公开(公告)号：US10770983B2
公开(公告)日：2020-09-08
申请号：US16211953
申请日：2018-12-06
发明人： Sujata Sen , Ronald Hulfachor , Sue Perranoski , Cha-Fu Tsai
摘要： An isolated switched-mode power converter converts power from an input source into power for an output load. A digital controller senses a secondary-side voltage, such as a rectified voltage, of the power converter. The secondary-side voltage is divided down using a high-impedance voltage divider. The resultant divided-down voltage is provided to a voltage sensor within the digital controller. The voltage sensor level shifts the provided voltage, and buffers the resulting level-shifted voltage. The buffered, level-shifted voltage is provided to a tracking analog-to-digital converter (ADC) for digitization. The buffered signal provided to the tracking ADC has a high current capability, such that the voltage input to the tracking ADC may quickly converge before the tracking ADC outputs a digital value for the sensed secondary-side voltage.
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4.发明申请公开(公告)号：US20200067416A1
公开(公告)日：2020-02-27
申请号：US16109254
申请日：2018-08-22
摘要： An isolated switched-mode power converter converts power from an input source into power for an output load. Power switches within a primary-side power stage control the amount of power input to the power converter and, ultimately, provided to the output load. A digital controller on the secondary side of the power converter generates signals to control the power switches. This generation is based upon closed-loop (feedback) control as well as feedforward control. The feedforward control compensates for variations in the voltage of the input source. The input voltage is estimated by sensing a rectified voltage at a node between a secondary winding of the isolation transformer and an output filter. The feedforward compensation modifies the generated switch control signals based upon the sensed rectified voltage.
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5.发明授权公开(公告)号：US12051974B2
公开(公告)日：2024-07-30
申请号：US16682830
申请日：2019-11-13
发明人： Zhiqing You , Tim Ng , Sue Perranoski , Benjamim Tang
IPC分类号： H02M3/157
CPC分类号： H02M3/157
摘要： A controller for a power converter includes: an estimator configured to estimate or calculate a slew rate of an output voltage of the power converter or a slew rate of an error voltage which corresponds to a difference between the output voltage and a target voltage, during a load transient; and a modulator configured to modify regulation of the output voltage based on the estimated or calculated slew rate. A corresponding voltage regulation method and an electronic system that includes the power converter are also described.
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公开(公告)号：US11632053B2
公开(公告)日：2023-04-18
申请号：US17009313
申请日：2020-09-01
发明人： Sujata Sen , Ronald Hulfachor , Sue Perranoski , Cha-Fu Tsai
摘要： An isolated switched-mode power converter converts power from an input source into power for an output load. A digital controller senses a secondary-side voltage, such as a rectified voltage, of the power converter. The secondary-side voltage is divided down using a high-impedance voltage divider. The resultant divided-down voltage is provided to a voltage sensor within the digital controller. The voltage sensor level shifts the provided voltage, and buffers the resulting level-shifted voltage. The buffered, level-shifted voltage is provided to a tracking analog-to-digital converter (ADC) for digitization. The buffered signal provided to the tracking ADC has a high current capability, such that the voltage input to the tracking ADC may quickly converge before the tracking ADC outputs a digital value for the sensed secondary-side voltage.
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公开(公告)号：US11502595B2
公开(公告)日：2022-11-15
申请号：US16123364
申请日：2018-09-06
摘要： An isolated switched-mode power converter converts power from an input source into power for an output load. Power switches within a primary-side power stage control the amount of power input to the power converter and, ultimately, provided to the output load. A digital controller on the secondary side of the power converter generates signals to control the power switches. This controller also senses a rectified voltage on the secondary side of the power converter and uses this sensed voltage to detect fault conditions of the primary side. For example, the sensed rectified voltage is used to detect undervoltage or overvoltage conditions of the input power source of the power converter, or faulty power switches within the primary-side power stage.
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8.发明申请公开(公告)号：US20210143735A1
公开(公告)日：2021-05-13
申请号：US16682830
申请日：2019-11-13
发明人： Zhiqing You , Tim Ng , Sue Perranoski , Benjamim Tang
IPC分类号： H02M3/157
摘要： A controller for a power converter includes: an estimator configured to estimate or calculate a slew rate of an output voltage of the power converter or a slew rate of an error voltage which corresponds to a difference between the output voltage and a target voltage, during a load transient; and a modulator configured to modify regulation of the output voltage based on the estimated or calculated slew rate. A corresponding voltage regulation method and an electronic system that includes the power converter are also described.
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9.发明申请公开(公告)号：US20200186047A1
公开(公告)日：2020-06-11
申请号：US16211953
申请日：2018-12-06
发明人： Sujata Sen , Ronald Hulfachor , Sue Perranoski , Cha-Fu Tsai
摘要： An isolated switched-mode power converter converts power from an input source into power for an output load. A digital controller senses a secondary-side voltage, such as a rectified voltage, of the power converter. The secondary-side voltage is divided down using a high-impedance voltage divider. The resultant divided-down voltage is provided to a voltage sensor within the digital controller. The voltage sensor level shifts the provided voltage, and buffers the resulting level-shifted voltage. The buffered, level-shifted voltage is provided to a tracking analog-to-digital converter (ADC) for digitization. The buffered signal provided to the tracking ADC has a high current capability, such that the voltage input to the tracking ADC may quickly converge before the tracking ADC outputs a digital value for the sensed secondary-side voltage.
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