-
公开(公告)号：US20210285989A1
公开(公告)日：2021-09-16
申请号：US16820658
申请日：2020-03-16
Applicant: Apple Inc.
Inventor： Jonathan F. Bolus
Abstract: A circuit and method for current sensing in DC-DC converters having coupled inductors is disclosed. A DC-DC converter includes a first and second inductors coupled to first and second switching nodes, respectively. The DC-DC converter further includes a current sensing circuit. The current sensing circuit includes a first current sensing circuit coupled to the first switching node and having a first sense node, and further includes a second sensing circuit coupled to the second switching node and having a second sense node. The circuit further includes a first capacitor coupled between the first sensing circuit and the second sensing circuit.
-
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.
Inventor： Fabio Gozzini , Jonathan F. Bolus
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.
-
公开(公告)号：US10135338B2
公开(公告)日：2018-11-20
申请号：US15850122
申请日：2017-12-21
Applicant: Apple Inc.
Inventor： Jonathan F. Bolus , Jitendra K. Agrawal
Abstract: An apparatus includes an inductor coupled to a load circuit, a control circuit, and a driver circuit. The control circuit may be configured to select a first operating mode in response to a determination that a value of current flowing through the inductor is greater than a threshold, and to otherwise select a second operating mode. In the first operating mode, the driver circuit may be configured to source current to the load circuit through the inductor for a first duration, based on a comparison of a supply voltage level to a voltage level across the load circuit. In the second operating mode, the driver circuit may be configured to source current to the load circuit through the inductor at a number of time points. At each time point the current may be sourced for a second duration that is based on an allowable peak current flowing through the inductor.
-
Patent Agency Ranking
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.
Inventor： Jonathan F. Bolus , Alberto Alessandro Angelo Puggelli , Fabio Gozzini , Hao Zhou
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.
-
公开(公告)号：US20240014739A1
公开(公告)日：2024-01-11
申请号：US18474677
申请日：2023-09-26
Applicant: Apple Inc.
Inventor： Sanjay Pant , Fabio Gozzini , Hubert Attah , Jonathan F. Bolus , Wenxun Huang , Koushik Vaithyanathan , Alberto Puggelli
IPC: H02M3/158 , H02M3/157 , G06F1/3203 , H03M1/12
CPC classification number: H02M3/1584 , H02M3/157 , G06F1/3203 , H03M1/12 , H02M3/1586
Abstract: A power converter with slew rate detection is disclosed. A power converter comprises a plurality of phase circuits coupled to a regulated power supply line via corresponding ones of a plurality of inductors. A first control loop generates, using digital samples and based on comparisons of a reference voltage to a voltage on the regulated power supply line, a first plurality of control signals. A second control loop, using the digital samples, generates a second plurality of control signals based on a rate of change of the voltage of the regulated power supply line. The second control loop causes the first control loop to control the plurality of phase circuits in response to detecting that the rate of change is within a specified range, and causes the second control loop to control the plurality of phase circuits, in response to detecting that the rate of change exceeds the specified range.
-
公开(公告)号：US20200350822A1
公开(公告)日：2020-11-05
申请号：US16877260
申请日：2020-05-18
Applicant: Apple Inc.
Inventor： Sanjay Pant , Fabio Gozzini , Hubert Attah , Jonathan F. Bolus , Wenxun Huang
IPC: H02M3/158 , H02M3/157 , G06F1/3203 , H03M1/12
Abstract: A voltage regulator circuit included in a computer system may include multiple phase circuits each coupled to a regulated power supply node via a corresponding inductor. The phase circuits may modify a voltage level of the regulated power supply node using respective control signals generated by a digital control circuit that processes multiple data bits. An analog-to-digital converter circuit may compare the voltage level of the regulated power supply node to multiple reference voltage levels and sample the resultant comparisons to generate the multiple data bits.
-
公开(公告)号：US20180115244A1
公开(公告)日：2018-04-26
申请号：US15850122
申请日：2017-12-21
Applicant: Apple Inc.
Inventor： Jonathan F. Bolus , Jitendra K. Agrawal
CPC classification number: H02M3/158 , H02M1/08 , H02M3/156 , H02M2001/0009 , H02M2001/0032 , H02M2001/0035
Abstract: An apparatus includes an inductor coupled to a load circuit, a control circuit, and a driver circuit. The control circuit may be configured to select a first operating mode in response to a determination that a value of current flowing through the inductor is greater than a threshold, and to otherwise select a second operating mode. In the first operating mode, the driver circuit may be configured to source current to the load circuit through the inductor for a first duration, based on a comparison of a supply voltage level to a voltage level across the load circuit. In the second operating mode, the driver circuit may be configured to source current to the load circuit through the inductor at a number of time points. At each time point the current may be sourced for a second duration that is based on an allowable peak current flowing through the inductor.
-
公开(公告)号：US09876429B1
公开(公告)日：2018-01-23
申请号：US15268425
申请日：2016-09-16
Applicant: Apple Inc.
Inventor： Jonathan F. Bolus , Jitendra K. Agrawal
CPC classification number: H02M3/158 , H02M1/08 , H02M3/156 , H02M2001/0009 , H02M2001/0032 , H02M2001/0035
Abstract: An apparatus including an inductor coupled to a load circuit, a control circuit, and a driver circuit. The control circuit may be configured to select a first operating mode in response to a determination that a value of current flowing through the inductor is greater than a threshold, and to otherwise select a second operating mode. In the first operating mode, the driver circuit may be configured to source current to the load circuit through the inductor for a first duration, based on a comparison of a supply voltage level to a voltage level across the load circuit. In the second operating mode, the driver circuit may be configured to source current to the load circuit through the inductor at a number of time points. At each time point the current may be sourced for a second duration that is based on an allowable peak current flowing through the inductor.
-
-
-
-
-
-
-
Search Results
18
records
(took 0.016 seconds)
