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公开(公告)号：US11863069B2
公开(公告)日：2024-01-02
申请号：US17537802
申请日：2021-11-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Puneet Sareen , Michael Känner , Christian Harder , Narayanan Seetharaman
CPC classification number: H02M3/157 , H02M1/0041
Abstract: A switching converter controller includes: a stopband controller having a stopband controller input and a stopband controller output, the stopband controller is configured to provide stopband information at the stopband controller output responsive to a reference signal; a pulse-frequency modulation (PFM) controller having a first PFM controller input, a second PFM controller input and a PFM controller output, the first PFM controller input configured to receive a feedback error signal, the second PFM controller input coupled to the stopband controller output, and the PFM controller configured to selectively adjust a clock signal at the PFM controller output based on the feedback error signal and the stopband information; and a driver circuit having a driver circuit input coupled to the PFM controller output and configured to receive the clock signal, and having a driver circuit output adapted to be coupled to a power stage switch.
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公开(公告)号：US11196339B1
公开(公告)日：2021-12-07
申请号：US17123195
申请日：2020-12-16
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Eduardas Jodka , Julian Becker Ferreira , Christian Harder , Florian Schimkat
IPC: H02M1/08 , H02M3/07 , H03K17/687
Abstract: A switching converter having a voltage input, a voltage output and a transistor connected between the voltage input and the voltage output, the switching converter including a control circuit comprising: a gate driver having an input, a first voltage supply input, a second voltage supply input and an output operable to be connected to a control terminal of the transistor; a bootstrap capacitor connected between the first voltage supply input and the second voltage supply input; and a charge pump having an input operable to be connected to the voltage input and an output connected to the first voltage supply input.
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公开(公告)号：US11552566B2
公开(公告)日：2023-01-10
申请号：US17176077
申请日：2021-02-15
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Joerg Kirchner , Stefan Dietrich , Ivan Shumkov , Christian Harder
Abstract: To facilitate current sensing for valley current-controlled power converters, an example apparatus includes a comparator having a first terminal, a second terminal, and an output. A first transistor has a first drain coupled to the first terminal of the comparator. A second transistor has a second drain coupled to the first terminal of the comparator. A third transistor has a third drain coupled to the second terminal of the comparator.
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公开(公告)号：US11303210B2
公开(公告)日：2022-04-12
申请号：US16708066
申请日：2019-12-09
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ivan Shumkov , Christian Harder , Erich-Johann Bayer , Joerg Kirchner , Gaetano Petrina
Abstract: Aspects of the present disclosure provide for a circuit. In at least some examples, the circuit includes a first switch coupled between a first node and a second node and a second switch coupled between a third node and the second node. The circuit further includes a resistor coupled between the second node and a fourth node and a capacitor comprising a first terminal coupled to the fourth node and a second terminal. The circuit further includes a transistor comprising a drain terminal coupled to the third node, a source terminal coupled to a fifth node, and a gate terminal and an amplifier comprising a first input terminal coupled to the fifth node, a second input terminal coupled to the fourth node, and an output terminal coupled to a sixth node.
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公开(公告)号：US20210083583A1
公开(公告)日：2021-03-18
申请号：US17000854
申请日：2020-08-24
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Julian Becker , Christian Harder , Eduardas Jodka , Stefan Dietrich , Puneet Sareen
IPC: H02M3/158 , H03K5/24 , H02M1/14 , G05F3/26 , G01R19/165
Abstract: A converter operable to convert an input voltage at an input node to an output voltage at an output node coupled to a load by switching on and off a transistor at a switching frequency, the converter comprising: an error amplifier circuit having a first input coupled to a reference voltage, a second input coupled to the output node through a resistive divider, a first output operable to output a control current and a second output operable to output a current equivalent to the control current; a peak current comparator circuit having a first input coupled to the second output of the error amplifier circuit, a second input and an output, the second input is coupled to the input node through an inductor; an off-time timer circuit having an input coupled to the first output of the error amplifier circuit and an output, the off-time timer circuit operable to set the switching frequency based on the control current; and a control circuit having a first input coupled to the output of the peak current comparator circuit, a second input coupled to the output of the off-time timer circuit and an output coupled to a control terminal of the transistor.
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Patent Agency Ranking
6.发明授权公开(公告)号：US10924015B2
公开(公告)日：2021-02-16
申请号：US15990382
申请日：2018-05-25
Applicant: Texas Instruments Incorporated
Inventor： Joerg Kirchner , Stefan Dietrich , Ivan Shumkov , Christian Harder
Abstract: Methods, systems, and apparatus to facilitate current sensing for valley current-controlled power converters are disclosed. An example apparatus includes a comparator including a first terminal, a second terminal, and an output. The apparatus further includes a first transistor including a first drain coupled to the first terminal of the comparator. The apparatus further includes a second transistor including a second drain coupled to the first terminal of the comparator. The apparatus further includes a third transistor including a third drain coupled to the second terminal of the comparator.
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公开(公告)号：US10020722B2
公开(公告)日：2018-07-10
申请号：US15294329
申请日：2016-10-14
Applicant: Texas Instruments Incorporated
Inventor： Christian Harder , Markus Georg Rommel , Stefan Reithmaier
Abstract: A circuit includes a signal generator to generate an output signal to vary the switching frequency of a switching circuit to mitigate noise in the switching circuit. The signal generator includes a modulation waveform generator (MWG) to generate a ramp signal in response to a numerical input and a switching signal from the switching circuit. The ramp signal is employed to modulate the frequency of the output signal of the signal generator over a range of frequencies from a minimum frequency to a maximum frequency. A frequency adjuster circuit modulates the amplitude of the ramp signal by adjusting at least one of the minimum frequency or the maximum frequency of the range of frequencies.
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公开(公告)号：US20210167687A1
公开(公告)日：2021-06-03
申请号：US17176077
申请日：2021-02-15
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Joerg Kirchner , Stefan Dietrich , Ivan Shumkov , Christian Harder
Abstract: To facilitate current sensing for valley current-controlled power converters, an example apparatus includes a comparator having a first terminal, a second terminal, and an output. A first transistor has a first drain coupled to the first terminal of the comparator. A second transistor has a second drain coupled to the first terminal of the comparator. A third transistor has a third drain coupled to the second terminal of the comparator.
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公开(公告)号：US20240022169A1
公开(公告)日：2024-01-18
申请号：US18374325
申请日：2023-09-28
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Puneet Sareen , Michael Känner , Christian Harder , Narayanan Seetharaman
CPC classification number: H02M3/157 , H02M1/0041
Abstract: A switching converter controller includes: a stopband controller having a stopband controller input and a stopband controller output, the stopband controller is configured to provide stopband information at the stopband controller output responsive to a reference signal; a pulse-frequency modulation (PFM) controller having a first PFM controller input, a second PFM controller input and a PFM controller output, the first PFM controller input configured to receive a feedback error signal, the second PFM controller input coupled to the stopband controller output, and the PFM controller configured to selectively adjust a clock signal at the PFM controller output based on the feedback error signal and the stopband information; and a driver circuit having a driver circuit input coupled to the PFM controller output and configured to receive the clock signal, and having a driver circuit output adapted to be coupled to a power stage switch.
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公开(公告)号：US11563378B2
公开(公告)日：2023-01-24
申请号：US17000854
申请日：2020-08-24
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Julian Becker , Christian Harder , Eduardas Jodka , Stefan Dietrich , Puneet Sareen
IPC: H02M1/08 , H02M3/156 , G05F1/46 , H02M3/158 , H03K5/24 , G05F3/26 , G01R19/165 , H02M1/14 , H02M1/00 , G05F1/575
Abstract: A converter operable to convert an input voltage at an input node to an output voltage at an output node coupled to a load by switching on and off a transistor at a switching frequency, the converter comprising: an error amplifier circuit having a first input coupled to a reference voltage, a second input coupled to the output node through a resistive divider, a first output operable to output a control current and a second output operable to output a current equivalent to the control current; a peak current comparator circuit having a first input coupled to the second output of the error amplifier circuit, a second input and an output, the second input is coupled to the input node through an inductor; an off-time timer circuit having an input coupled to the first output of the error amplifier circuit and an output, the off-time timer circuit operable to set the switching frequency based on the control current; and a control circuit having a first input coupled to the output of the peak current comparator circuit, a second input coupled to the output of the off-time timer circuit and an output coupled to a control terminal of the transistor.
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