Switching power converters with adaptively triggered analog-to-digital converters

A switching power converter includes a power circuit and a control circuit for receiving an analog signal representing a parameter of the power circuit. The control circuit includes an ADC for converting the analog signal into a digital signal, and a switch driver for generating a control signal for...

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Hauptverfasser: Ling, Chung Hang, Li, Zhi Zhi, He, Caiwang
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creator Ling, Chung Hang
Li, Zhi Zhi
He, Caiwang
description A switching power converter includes a power circuit and a control circuit for receiving an analog signal representing a parameter of the power circuit. The control circuit includes an ADC for converting the analog signal into a digital signal, and a switch driver for generating a control signal for controlling a switch in the power circuit over multiple switching cycles. The control circuit is configured to adaptively determine a trigger point for activating the ADC within a switching cycle to sample the analog signal, and activate the ADC at the determined trigger point so a control parameter generated based on the digital signal is provided to the switch driver a minimal period of time before the next switching cycle begins. The adaptively determined trigger point optimizes phrase margin loss and bandwidth in the control circuit. Other example switching power converters and control circuits are also disclosed.
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The control circuit includes an ADC for converting the analog signal into a digital signal, and a switch driver for generating a control signal for controlling a switch in the power circuit over multiple switching cycles. The control circuit is configured to adaptively determine a trigger point for activating the ADC within a switching cycle to sample the analog signal, and activate the ADC at the determined trigger point so a control parameter generated based on the digital signal is provided to the switch driver a minimal period of time before the next switching cycle begins. The adaptively determined trigger point optimizes phrase margin loss and bandwidth in the control circuit. 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subjects APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DECODING
ELECTRICITY
GENERATION
title Switching power converters with adaptively triggered analog-to-digital converters
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