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公开(公告)号：US20250141333A1
公开(公告)日：2025-05-01
申请号：US18495934
申请日：2023-10-27
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Seetha Seetharaman , Puneet Sareen
Abstract: A circuit includes a compensation terminal, a current feedback terminal, a voltage feedback terminal, a reference voltage terminal, a modulator, an error amplifier, and average current balancing circuitry. A first input of the modulator is coupled to the current feedback terminal. A first input of the error amplifier is coupled to the voltage feedback terminal. A second input of the error amplifier is coupled to the reference voltage terminal. An output of the error amplifier is coupled to the compensation terminal. A first input of the average current balancing circuitry is coupled to the output of the error amplifier and the compensation terminal. A second input of the average current balancing circuitry is coupled to the current feedback terminal. An output of the average current balancing circuitry is coupled to a second input of the modulator.
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公开(公告)号：US12212236B2
公开(公告)日：2025-01-28
申请号：US17853287
申请日：2022-06-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Narayanan Seetharaman , Puneet Sareen
Abstract: A DC-DC converter circuit includes an error amplifier, a comparator, an oscillator, and a control circuit. The error amplifier is configured to generate an error signal. The control circuit is coupled to the error amplifier, the comparator, and the oscillator. The control circuit is configured to generate an oscillator control signal to control a frequency of the oscillator based on the error signal, and to generate a peak control signal provided to the comparator based on the error signal. The control circuit is also configured to switch, based on the error signal, between a first modulation mode and a second modulation mode during a transition mode, and in the transition mode, generate the oscillator control signal based on the peak control signal and the error signal.
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公开(公告)号：US12126260B2
公开(公告)日：2024-10-22
申请号：US17514951
申请日：2021-10-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Puneet Sareen , Narayanan Seetharaman
IPC: H02M3/158 , G01R19/165 , G05F1/56 , H02M1/00 , H03K5/24
CPC classification number: H02M3/1584 , G01R19/16538 , G05F1/561 , H02M1/0009 , H02M1/0012 , H02M1/0025 , H03K5/24
Abstract: In an example, a system includes a switching voltage converter including a first field effect transistor (FET) and a second FET, the switching voltage converter configured to receive an input voltage and provide an output voltage. The system also includes a voltage to current converter coupled to the switching voltage converter and an oscillator, the voltage to current converter configured to receive an error voltage of the output voltage and provide an oscillator current to the oscillator. The system includes a comparator coupled to the oscillator and configured to compare the oscillator current to a reference current, where an output of the comparator is configured to skip a pulse of an oscillator output responsive to the oscillator current being less than the reference current.
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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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Patent Agency Ranking
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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公开(公告)号：US11863073B2
公开(公告)日：2024-01-02
申请号：US17490764
申请日：2021-09-30
Applicant: Texas Instruments Incorporated
IPC: H02M3/158 , H02M1/00 , H03K3/0233
CPC classification number: H02M3/1584 , H02M1/0009 , H02M1/0025 , H03K3/02337
Abstract: A DC-DC converter includes an output terminal, a reference voltage source, an error amplifier, and a compensation circuit. The error amplifier is coupled to the output terminal and the reference voltage source. The error amplifier is configured to generate an error signal representative of a difference between a voltage at the output terminal and a reference voltage provided by the reference voltage source. The compensation circuit is coupled to the error amplifier. The compensation circuit includes a resistor, a capacitor, and a switch control circuit. The resistor is coupled to the error amplifier. The capacitor is coupled to the resistor. The switch control circuit is configured to modulate connection of the resistor to the capacitor based on a switching frequency of the DC-DC converter.
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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：US20210126538A1
公开(公告)日：2021-04-29
申请号：US17038410
申请日：2020-09-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Emiliano Alejandro Puia , Gaetano Maria Walter Petrina , Puneet Sareen
Abstract: A converter having an input adapted to be connected to an input voltage and an output adapted to supply an output voltage, the converter comprising: a high-side switch having a first current terminal, a second current terminal and a first control terminal, the first current terminal is coupled to the input voltage and the second current terminal is coupled to a switching node; a high-side driver circuit having an input, a first supply input, a second supply input and an output coupled to the first control terminal, the second supply input is coupled to the switching node; a bootstrap capacitor having a first terminal and a second terminal, the first terminal coupled to the first supply input and the second terminal coupled to the second supply input; a switch having a first terminal and a second terminal, the first terminal of the switch is coupled to the first terminal of the bootstrap capacitor and the second terminal of the switch is connected to a supply voltage (VDD volts above ground).
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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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