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公开(公告)号：US12294298B2
公开(公告)日：2025-05-06
申请号：US18398802
申请日：2023-12-28
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Zejing Wang , Zhujun Li , Songming Zhou , Yu Wang
Abstract: A system includes: 1) a battery configured to provide an input voltage (VIN); 2) switching converter circuitry coupled to the battery, wherein the switching converter circuitry includes a power switch; 3) a load coupled to an output of the switching converter circuitry; and 4) a control circuit coupled to the power switch. The control circuit includes: 1) a switch driver circuit coupled to the power switch; 2) a summing comparator circuit configured to output a first control signal that indicates when to turn the power switch on; and 3) an analog on-time extension circuit configured to extend an on-time of the power switch by gating a second control signal with the first control signal, wherein the second control signal indicates when to turn the power switch off.
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公开(公告)号：US20240283285A1
公开(公告)日：2024-08-22
申请号：US18171480
申请日：2023-02-20
Applicant: Texas Instruments Incorporated
Inventor： Jing Ji , Jian Liang , Shih-chao Hsu , Zejing Wang
CPC classification number: H02J9/061 , H02J7/0013 , H02J7/005 , H02J7/007182 , H02M3/158 , H02J2207/20
Abstract: A power system includes a transistor device (e.g., one or more NFETs) is coupled between input voltage and switching node terminals, to provide a variable sense resistance. The system may further include low-side and high-side switching elements, with the low-side switching element coupled between a ground terminal and the switching node terminal, and the high-side switching element coupled between the switching node terminal and an output voltage terminal. The system may be configured to determine its mode of operation, based on primary and backup battery voltages, and enable a corresponding control loop based on that determined mode. With a control loop enabled, the system may be further configured to control the transistor device to provide a variable sense resistor based on a given control parameter. The low-side switching element may be shared by the modes, and external to a chip that includes the high-side switching element and transistor device.
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公开(公告)号：US20210313883A1
公开(公告)日：2021-10-07
申请号：US17010418
申请日：2020-09-02
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Zejing Wang , Zhujun Li , Songming Zhou , Yu Wang
Abstract: A system includes: 1) a battery configured to provide an input voltage (VIN); 2) switching converter circuitry coupled to the battery, wherein the switching converter circuitry includes a power switch; 3) a load coupled to an output of the switching converter circuitry; and 4) a control circuit coupled to the power switch. The control circuit includes: 1) a switch driver circuit coupled to the power switch; 2) a summing comparator circuit configured to output a first control signal that indicates when to turn the power switch on; and 3) an analog on-time extension circuit configured to extend an on-time of the power switch by gating a second control signal with the first control signal, wherein the second control signal indicates when to turn the power switch off.
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Patent Agency Ranking
公开(公告)号：US11557969B2
公开(公告)日：2023-01-17
申请号：US17010418
申请日：2020-09-02
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Zejing Wang , Zhujun Li , Songming Zhou , Yu Wang
Abstract: A system includes: 1) a battery configured to provide an input voltage (VIN); 2) switching converter circuitry coupled to the battery, wherein the switching converter circuitry includes a power switch; 3) a load coupled to an output of the switching converter circuitry; and 4) a control circuit coupled to the power switch. The control circuit includes: 1) a switch driver circuit coupled to the power switch; 2) a summing comparator circuit configured to output a first control signal that indicates when to turn the power switch on; and 3) an analog on-time extension circuit configured to extend an on-time of the power switch by gating a second control signal with the first control signal, wherein the second control signal indicates when to turn the power switch off.
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公开(公告)号：US20240128867A1
公开(公告)日：2024-04-18
申请号：US18398802
申请日：2023-12-28
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Zejing Wang , Zhujun Li , Songming Zhou , Yu Wang
CPC classification number: H02M3/157 , H02M1/08 , H02M3/158 , H02J7/007 , H02J2207/20
Abstract: A system includes: 1) a battery configured to provide an input voltage (VIN); 2) switching converter circuitry coupled to the battery, wherein the switching converter circuitry includes a power switch; 3) a load coupled to an output of the switching converter circuitry; and 4) a control circuit coupled to the power switch. The control circuit includes: 1) a switch driver circuit coupled to the power switch; 2) a summing comparator circuit configured to output a first control signal that indicates when to turn the power switch on; and 3) an analog on-time extension circuit configured to extend an on-time of the power switch by gating a second control signal with the first control signal, wherein the second control signal indicates when to turn the power switch off.
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公开(公告)号：US10969808B2
公开(公告)日：2021-04-06
申请号：US16685357
申请日：2019-11-15
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Zejing Wang , Zhujun Li
Abstract: A switching converter controller includes an on-time timer circuit coupled to a switch driver circuit. The on-time timer circuit includes an up/down counter with a clock input node. The on-time timer circuit also includes a latch with an input coupled to an external clock signal and with an output coupled to the clock input node. The on-time timer circuit also includes an on-time capacitor array with a control terminal coupled an output of the up/down counter.
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公开(公告)号：US11916479B2
公开(公告)日：2024-02-27
申请号：US18082274
申请日：2022-12-15
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Zejing Wang , Zhujun Li , Songming Zhou , Yu Wang
CPC classification number: H02M3/157 , H02M1/08 , H02M3/158 , H02J7/007 , H02J2207/20
Abstract: A system includes: 1) a battery configured to provide an input voltage (VIN); 2) switching converter circuitry coupled to the battery, wherein the switching converter circuitry includes a power switch; 3) a load coupled to an output of the switching converter circuitry; and 4) a control circuit coupled to the power switch. The control circuit includes: 1) a switch driver circuit coupled to the power switch; 2) a summing comparator circuit configured to output a first control signal that indicates when to turn the power switch on; and 3) an analog on-time extension circuit configured to extend an on-time of the power switch by gating a second control signal with the first control signal, wherein the second control signal indicates when to turn the power switch off.
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公开(公告)号：US20230208293A1
公开(公告)日：2023-06-29
申请号：US18082274
申请日：2022-12-15
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Zejing Wang , Zhujun Li , Songming Zhou , Yu Wang
CPC classification number: H02M3/157 , H02M3/158 , H02M1/08 , H02J2207/20 , H02J7/007
Abstract: A system includes: 1) a battery configured to provide an input voltage (VIN); 2) switching converter circuitry coupled to the battery, wherein the switching converter circuitry includes a power switch; 3) a load coupled to an output of the switching converter circuitry; and 4) a control circuit coupled to the power switch. The control circuit includes: 1) a switch driver circuit coupled to the power switch; 2) a summing comparator circuit configured to output a first control signal that indicates when to turn the power switch on; and 3) an analog on-time extension circuit configured to extend an on-time of the power switch by gating a second control signal with the first control signal, wherein the second control signal indicates when to turn the power switch off.
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