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公开(公告)号：US12155305B2
公开(公告)日：2024-11-26
申请号：US17936930
申请日：2022-09-30
Applicant: Texas Instruments Incorporated
Inventor： Jian Liang , Chen Feng , Zichen Feng
Abstract: A boost converter that provides a wide average current limiting range includes a switch coupled to an inductor output and a power input, a diode coupled to the inductor output and an output terminal load and configured to conduct current in only one direction away from the inductor output and toward the output terminal, a clamp circuit coupled to the diode and the switch, and a minimum time off module coupled to the diode and the switch. The clamp circuit is configured to clamp an inductor output current to a reference current while the converter is operating in a continuous conduction mode (CCM) of operation. The minimum time off module is configured to cause the inductor output current to be zero for at least a time Toff while the converter is operating in a pulse frequency modulation (PFM) mode of operation.
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公开(公告)号：US20200127565A1
公开(公告)日：2020-04-23
申请号：US16294054
申请日：2019-03-06
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Jian Liang , Yangwei Yu , Chen Feng
Abstract: A voltage regulator circuit includes a first transistor, an inductor, and a diode. The inductor connects to the diode at a switch node. The voltage converter produces an output voltage that is larger than an input voltage. The first transistor has on and off states and electrically couples a node to ground when in the on state. An error amplifier circuit generates an error signal based on a difference between a reference voltage and a voltage indicative of the output voltage. The error signal causes the first transistor to transition from the on to the off state. An adaptive off-time generator circuit couples to the input voltage node, and generates a signal to cause the first transistor to transition from the off to the on state. The time the first transistor is in the off state is inversely proportional to the time the first transistor is in the on state.
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Patent Agency Ranking
公开(公告)号：US12206326B2
公开(公告)日：2025-01-21
申请号：US18525317
申请日：2023-11-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Jian Liang , Yao Lu , Chen Feng
Abstract: A circuit includes a control circuit having a first control circuit input, a second control circuit input, a first control circuit output, and a second control circuit output, and a first transistor having a first current terminal, a second current terminal, and a control terminal, the control terminal coupled to the first control circuit output, the first current terminal coupled to the first control circuit input and to a second transistor, and the second current terminal adapted to be coupled to the second transistor, a logic circuit having a first logic input, a second logic input, and a logic output, the first logic input coupled to the second control circuit output and a switch having a first switch terminal, a second switch terminal, and a switch control terminal, the switch control terminal coupled to the logic output and the first switch terminal coupled to the second current terminal.
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公开(公告)号：US20240113621A1
公开(公告)日：2024-04-04
申请号：US17936930
申请日：2022-09-30
Applicant: Texas Instruments Incorporated
Inventor： Jian Liang , Chen Feng , Zichen Feng
CPC classification number: H02M3/158 , H02M1/0009
Abstract: A boost converter that provides a wide average current limiting range includes a switch coupled to an inductor output and a power input, a diode coupled to the inductor output and an output terminal load and configured to conduct current in only one direction away from the inductor output and toward the output terminal, a clamp circuit coupled to the diode and the switch, and a minimum time off module coupled to the diode and the switch. The clamp circuit is configured to clamp an inductor output current to a reference current while the converter is operating in a continuous conduction mode (CCM) of operation. The minimum time off module is configured to cause the inductor output current to be zero for at least a time Toff while the converter is operating in a pulse frequency modulation (PFM) mode of operation.
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公开(公告)号：US10826392B2
公开(公告)日：2020-11-03
申请号：US16294054
申请日：2019-03-06
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Jian Liang , Yangwei Yu , Chen Feng
Abstract: A voltage regulator circuit includes a first transistor, an inductor, and a diode. The inductor connects to the diode at a switch node. The voltage converter produces an output voltage that is larger than an input voltage. The first transistor has on and off states and electrically couples a node to ground when in the on state. An error amplifier circuit generates an error signal based on a difference between a reference voltage and a voltage indicative of the output voltage. The error signal causes the first transistor to transition from the on to the off state. An adaptive off-time generator circuit couples to the input voltage node, and generates a signal to cause the first transistor to transition from the off to the on state. The time the first transistor is in the off state is inversely proportional to the time the first transistor is in the on state.
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公开(公告)号：US11881770B2
公开(公告)日：2024-01-23
申请号：US17563255
申请日：2021-12-28
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Jian Liang , Yao Lu , Chen Feng
CPC classification number: H02M3/155
Abstract: A voltage converter having a voltage input and a voltage output, the voltage converter including a first and second transistors and an average current control circuit. The first transistor has a first control input, a first current terminal, and a second current terminal. The first current terminal is adapted to be coupled to a switch node. The second transistor has a second control input, a third current terminal, and a fourth current terminal. The third current terminal is adapted to be coupled to an inductor. The average current control circuit is coupled to the third current terminal and the fourth current terminal. The average current control circuit is configured to determine an average current level of current flowing through the second transistor and to control a voltage on the first control input of the first terminal based on the determined average current level.
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公开(公告)号：US20230029559A1
公开(公告)日：2023-02-02
申请号：US17385904
申请日：2021-07-27
Applicant: Texas Instruments Incorporated
Inventor： Chen Feng , Jian Liang , Weicheng Zhang
Abstract: In described examples, a boost converter includes an inductor, a voltage input, a current regulator, an intermediate node, a transistor, and a regulation circuit. The inductor has first and second terminals. The voltage input provides an input voltage, and is coupled to the first inductor terminal. The current regulator has current regulator input and output. The current regulator input is coupled to the second inductor terminal. The current regulator allows current to flow from the current regulator input to the current regulator output, and not vice versa. The intermediate node provides a node voltage. The transistor includes a source, a drain, and a gate. The drain is coupled to the current regulator output via the intermediate node. The regulation circuit includes a first regulation input coupled to receive the input voltage, a second regulation input coupled to the intermediate node, and a regulation output coupled to the gate.
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