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公开(公告)号：US11264983B1
公开(公告)日：2022-03-01
申请号：US17087262
申请日：2020-11-02
Applicant: Texas Instruments Incorporated
Inventor： Cetin Kaya , Nathan Richard Schemm
IPC: H03K17/16 , H03K17/30 , H03K17/284
Abstract: Methods, apparatus, systems and articles of manufacture are described to parallelize transistors. An example apparatus includes a first transistor on a first die and a second transistor on a second die. The example apparatus includes a parallel feedback terminal coupled to the first die and the second die and a current sensor including a first contact and a second contact. The example apparatus includes a resistor coupled to the current sensor and at least one of the switched terminal or a ground terminal. The example apparatus includes an active drive controller including a first input coupled to the resistor, a second input coupled to the parallel feedback terminal, and an output coupled to the parallel feedback terminal. The example apparatus includes an edge delay controller adapted to be coupled to a gate driver and an error amplifier, and a control contact adapted to be coupled to the gate driver.
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2.发明申请公开(公告)号：US20200313421A1
公开(公告)日：2020-10-01
申请号：US16366813
申请日：2019-03-27
Applicant: Texas Instruments Incorporated
Inventor： Serkan Dusmez , Nathan Richard Schemm , Salil Chellappan
Abstract: Methods, systems, and apparatus to facilitate a fault triggered diode emulation mode of a transistor. An example apparatus includes a driver to output a control signal to a gate terminal of a transistor of a power converter; and a diode emulation control circuit to, in response to determining a fault corresponding to the transistor, enable the transistor when current flows in a direction from a source terminal of the transistor to a drain terminal of the transistor.
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3.发明授权公开(公告)号：US10250192B2
公开(公告)日：2019-04-02
申请号：US15708168
申请日：2017-09-19
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aritra Banerjee , Joonhoi Hur , Baher Haroun , Nathan Richard Schemm , Rahmi Hezar , Lei Ding
Abstract: An outphasing amplifier includes a first class-E power amplifier having an output coupled to a first conductor and an input receiving a first RF drive signal. A first reactive element is coupled between the first conductor and a second conductor. A second reactive element is coupled between the second conductor and a third conductor. A second class-E power amplifier includes an output coupled to a fourth conductor and an input coupled to a second RF drive signal, a third reactive element coupled between the second and fourth conductors. Outputs of the first and second power amplifiers are combined by the first, second and third reactive elements to produce an output current in a load. An efficiency enhancement circuit is coupled between the first and fourth conductors to improve power efficiency at back-off power levels. Power enhancement circuits are coupled to the first and fourth conductors, respectively.
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4.发明授权公开(公告)号：US09806673B2
公开(公告)日：2017-10-31
申请号：US15165339
申请日：2016-05-26
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aritra Banerjee , Joonhoi Hur , Baher Haroun , Nathan Richard Schemm , Rahmi Hezar , Lei Ding
CPC classification number: H03F1/0205 , H03F1/0294 , H03F3/193 , H03F3/211 , H03F3/217 , H03F3/2171 , H03F3/2173 , H03F3/2176 , H03F3/45179 , H03F2200/391 , H03F2200/451 , H03F2203/21139 , H03F2203/21142
Abstract: An outphasing amplifier includes a first class-E power amplifier (16-1) having an output coupled to a first conductor (31-1) and an input receiving a first RF drive signal (S1(t)). A first reactive element (CA-1) is coupled between the first conductor and a second conductor (30-1). A second reactive element (LA-1) is coupled between the second conductor and a third conductor (32-1). A second class-E power amplifier (17-1) includes an output coupled to a fourth conductor (31-2) and an input coupled to a second RF drive signal (S2(t)), a third reactive element (CA-3) coupled between the second and fourth conductors. Outputs of the first and second power amplifiers are combined by the first, second and third reactive elements to produce an output current in a load (R). An efficiency enhancement circuit (LEEC-1) is coupled between the first and fourth conductors to improve power efficiency at back-off power levels. Power enhancement circuits (20-1,2) are coupled to the first and fourth conductors, respectively.
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公开(公告)号：US11614478B2
公开(公告)日：2023-03-28
申请号：US17226924
申请日：2021-04-09
Applicant: Texas Instruments Incorporated
Inventor： Nathan Richard Schemm
IPC: G01R31/26 , H03K17/687 , H03K5/24
Abstract: A fault detection circuit includes a short circuit comparison circuit which has a first input connected to the source of the second NFET, a second input, and an output. The circuit includes an over-current comparison circuit which has a first input connected to the source of the second NFET, a second input, and an output. The circuit includes a voltage divider circuit which has a first terminal connected to first input of the short circuit comparison circuit, a second terminal connected to the first input of the over-current comparison circuit, and a third terminal connected to a ground terminal. The circuit includes a delay circuit which has an input connected to the output of the over-current comparison circuit and has an output.
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Patent Agency Ranking
6.发明授权公开(公告)号：US11183832B2
公开(公告)日：2021-11-23
申请号：US16366813
申请日：2019-03-27
Applicant: Texas Instruments Incorporated
Inventor： Serkan Dusmez , Nathan Richard Schemm , Salil Chellappan
Abstract: Methods, systems, and apparatus to facilitate a fault triggered diode emulation mode of a transistor. An example apparatus includes a driver to output a control signal to a gate terminal of a transistor of a power converter; and a diode emulation control circuit to, in response to determining a fault corresponding to the transistor, enable the transistor when current flows in a direction from a source terminal of the transistor to a drain terminal of the transistor.
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公开(公告)号：US20190173438A1
公开(公告)日：2019-06-06
申请号：US16259100
申请日：2019-01-28
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aritra Banerjee , Rahmi Hezar , Lei Ding , Nathan Richard Schemm
Abstract: A first branch group circuit includes a first branch circuit receiving a first RF input signal and first control information; and a second branch circuit receiving the first input signal and second control information. Each of the first and second branch circuits includes a power amplifier. The second control information enables the second branch circuit to be switched on or off while the first branch circuit remains on. A second branch group circuit includes: a third branch circuit receiving a second RF input signal and third control information; and a fourth branch circuit receiving the second input signal and fourth control information. Each of the third and fourth branch circuits includes a power amplifier. The fourth control information enables the fourth branch circuit to be switched on or off while the third branch circuit remains on. A combiner combines output signals of the power amplifiers to produce an output signal.
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8.发明申请公开(公告)号：US20180006609A1
公开(公告)日：2018-01-04
申请号：US15708168
申请日：2017-09-19
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aritra Banerjee , Joonhoi Hur , Baher Haroun , Nathan Richard Schemm , Rahmi Hezar , Lei Ding
CPC classification number: H03F1/0205 , H03F1/0294 , H03F3/193 , H03F3/211 , H03F3/217 , H03F3/2171 , H03F3/2173 , H03F3/2176 , H03F3/45179 , H03F2200/391 , H03F2200/451 , H03F2203/21139 , H03F2203/21142
Abstract: An outphasing amplifier includes a first class-E power amplifier having an output coupled to a first conductor and an input receiving a first RF drive signal. A first reactive element is coupled between the first conductor and a second conductor. A second reactive element is coupled between the second conductor and a third conductor. A second class-E power amplifier includes an output coupled to a fourth conductor and an input coupled to a second RF drive signal, a third reactive element coupled between the second and fourth conductors. Outputs of the first and second power amplifiers are combined by the first, second and third reactive elements to produce an output current in a load. An efficiency enhancement circuit is coupled between the first and fourth conductors to improve power efficiency at back-off power levels. Power enhancement circuits are coupled to the first and fourth conductors, respectively.
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公开(公告)号：US20240275374A1
公开(公告)日：2024-08-15
申请号：US18645774
申请日：2024-04-25
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Cetin Kaya , Nathan Richard Schemm , Yong Xie
IPC: H03K17/082 , G01K7/02 , G01R1/20 , G01R19/165 , G05F1/46 , H03K5/24
CPC classification number: H03K17/0822 , G01K7/02 , G01R1/203 , G01R19/16538 , G05F1/461 , H03K5/24
Abstract: A short circuit detection circuit includes a current terminal, a sense resistor, an amplifier, and a resistor-capacitor ladder. The sense resistor is coupled to the current terminal, and is configured to develop a sense voltage proportional to a current through the current terminal. The amplifier is coupled to the sense resistor, and is configured to generate a scaled current proportional to the sense voltage. The resistor-capacitor ladder is coupled to the amplifier, and is configured to generate a measurement voltage that represents a surface temperature rise due to the current through the current terminal.
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公开(公告)号：US11698307B2
公开(公告)日：2023-07-11
申请号：US16731910
申请日：2019-12-31
Applicant: Texas Instruments Incorporated
Inventor： Nathan Richard Schemm
CPC classification number: G01K15/005 , G01K7/16 , G01K15/007 , G05B11/018 , H01L23/34
Abstract: Methods, apparatus, systems and articles of manufacture to trim temperature sensors are disclosed. An example method includes: sampling a first value indicative of a temperature of a first die of a multi-chip module (MCM) with a first temperature sensor, the first die including a first transistor having a channel including a first material; and calibrating a second temperature sensor configured to sample a second value indicative of a temperature of a second die including a second transistor have a second channel including a second material, the calibrating based on the first value.
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