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公开(公告)号：US20240364210A1
公开(公告)日：2024-10-31
申请号：US18309001
申请日：2023-04-28
发明人： Florian Neveu , Stefan Schimonsky , Joerg Kirchner
CPC分类号： H02M1/32 , H02M1/0009 , H02M3/157 , H02M3/1582
摘要： The techniques and circuits, described herein, include solutions for pass-through operation including overcurrent protection in buck-boost converters. In some aspects, first and second switches selectively couple inputs of a peak current comparator to inputs of an error amplifier during pass-through operation. As part of peak current control scheme, one of the peak current comparator inputs is coupled to a current sensor that senses a current through an inductor of the buck-boost converter. As a result, an output of the error amplifier tracks the inductor current during pass-through mode, which may be utilized to implement inductor overcurrent protection in the pass-through mode.
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公开(公告)号：US11569736B2
公开(公告)日：2023-01-31
申请号：US17184721
申请日：2021-02-25
发明人： Joerg Kirchner , Stefan Schimonsky
摘要： A soft-start circuit includes an error amplifier, a reference voltage ramp circuit, and a minimum current clamp circuit. The error amplifier is configured to generate a difference voltage representing a difference of a feedback voltage and a reference voltage ramp. The reference voltage ramp circuit is configured to generate the reference voltage ramp. The minimum current clamp circuit is configured to clamp an output of the error amplifier to a predetermined minimum voltage.
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