Coupled inductor current sensing apparatus and systems

    公开(公告)号:US09726697B2

    公开(公告)日:2017-08-08

    申请号:US14588394

    申请日:2014-12-31

    CPC classification number: G01R19/10 G01R1/203 G01R19/0092 G01R31/40

    Abstract: A voltage proportional to a sum of currents flowing though first and second coupled inductors is developed across a first capacitor common to first and second series RC networks if the RC networks are time constant-matched to the inductors. The first and second inductors are coupled between a first and second switched drive phase input terminal, respectively, and an apparatus output terminal. The first and second RC networks are coupled in parallel with the first and second inductor, respectively. Inverting and non-inverting inputs of an amplifier are coupled to junctions of third and fourth time constant-matched series RC networks coupled in parallel with the first and second inductors, respectively. The amplifier subtracts voltages sensed at the junctions to generate a difference signal proportional to a magnitude difference of the currents flowing through the inductors.

    Unidirectional ring mitigation in a voltage converter

    公开(公告)号:US11081955B2

    公开(公告)日:2021-08-03

    申请号:US15716647

    申请日:2017-09-27

    Abstract: A system includes a high side transistor switch coupled to a first voltage node and a low side transistor switch coupled to the high side transistor switch at a switch node. The system further includes a unidirectional decoupling capacitor circuit including a capacitive component. The unidirectional decoupling capacitor circuit is coupled between the first voltage node and a common potential. Responsive to a voltage on the first voltage node being more than a threshold greater than an input voltage to the first voltage node, the unidirectional decoupling capacitor circuit is configured to sink current from the first voltage node to the capacitive component. The capacitive component can therefore be charged, with the charge used to subsequently power a load.

    METHODS AND APPARATUS TO IMPROVE PERFORMANCE OF POWER PATH PROTECTION DEVICES

    公开(公告)号:US20210066909A1

    公开(公告)日:2021-03-04

    申请号:US17011522

    申请日:2020-09-03

    Abstract: An example integrated circuit includes: a substrate and a first metal fuse layer on the substrate, the first metal fuse layer having first and second electrical contacts, the first electrical contact adapted to be coupled to an input terminal, the second electrical contact adapted to be coupled to a diode. The example integrated circuit further includes a second metal fuse layer on the substrate, the second metal fuse layer having third and fourth electrical contacts, the third electrical contact coupled to the second electrical contact and adapted to be coupled to the diode, the fourth electrical contact coupled to a shunt circuit.

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