Current mode power converter with transient response compensation

    公开(公告)号:US10862388B1

    公开(公告)日:2020-12-08

    申请号:US16509234

    申请日:2019-07-11

    Applicant: Apple Inc.

    Abstract: A power converter circuit that includes a switch node coupled to a regulated power supply node via an inductor may, during a charge cycle, source current to the regulated power supply node. In response to initiating the charge cycle, a control circuit may generate a control current using a voltage level of the regulated power supply node and a reference voltage level. The control circuit may also halt the charge cycle using results from comparisons of the compensated and uncompensated versions of the inductor current to the control current.

    Current Measurement for Power Converter Circuits

    公开(公告)号:US20240126353A1

    公开(公告)日:2024-04-18

    申请号:US18497443

    申请日:2023-10-30

    Applicant: Apple Inc.

    CPC classification number: G06F1/26 G01R15/146 G11C7/1096

    Abstract: A power converter circuit included in a computer system may include a phase circuit and a sample circuit. The phase circuit compares a voltage level of the regulated power supply node to a reference voltage to generate a demand current that is used to adjust the voltage level of the regulated power supply node. The phase circuit also digitizes the demand current and stores the resultant bit stream in a memory circuit. The sample circuit generates timestamp information that points to particular storage locations in the memory circuit that correspond to trigger events, allowing the operation of the power converter circuit to be analyzed during different circumstances as well as to adjust operating parameters of the power converter circuit.

    Power converter with DCR sensing circuit having improved noise immunity

    公开(公告)号:US11949334B2

    公开(公告)日:2024-04-02

    申请号:US17644521

    申请日:2021-12-15

    Applicant: Apple Inc.

    CPC classification number: H02M3/158 H02M1/0009 H02M3/1584

    Abstract: A power converter is disclosed. The power converter includes a switching circuit configured to source current to a switch node that is coupled, via an inductor, to a regulated power supply node. A DC resistance sensing circuit includes a first filter and a second filters. The first filter circuit is configured to filter a voltage level of a first terminal of the inductor to generate a first filtered signal, while the second filter circuit is configured to filter a voltage level of a second terminal of the inductor to generate a second filtered signal. A control circuit is configured to adjust the operation of the switching circuit using a voltage level of the regulated power supply node, the first filtered signal, and the second filtered signal.

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