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公开(公告)号：US11671022B2
公开(公告)日：2023-06-06
申请号：US17308634
申请日：2021-05-05
Applicant: Texas Instruments Incorporated
Inventor： Salvatore Giombanco , Saurav Bandyopadhyay , Rosario Stracquadaini
CPC classification number: H02M3/33571 , H02M1/0035 , H02M3/01
Abstract: Embodiments include systems, methods, and apparatuses for controlling off-time during a burst mode in an LLC converter. In one embodiment, a circuit comprises an LLC converter having a primary side and a burst mode controller, the burst mode controller configured to monitor, on the primary side of the LLC converter, electrical current, and in response to a determination that the electrical current is below a first threshold, increase an off-time for switches in the LLC converter and in response to a determination that the electrical current is above a second threshold that is higher than the first threshold, decrease the off-time for the switches in the LLC converter.
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公开(公告)号：US11101735B2
公开(公告)日：2021-08-24
申请号：US16584610
申请日：2019-09-26
Applicant: Texas Instruments Incorporated
Inventor： Kevin Scoones , Orlando Lazaro , Alvaro Aguilar , Jeffrey Anthony Morroni , Reza Sharifi , Saurav Bandyopadhyay
Abstract: In a described example, an apparatus includes a first switch coupled between a terminal for receiving an input voltage and a top plate node, and having a first control terminal; a second switch coupled between the top plate node and a switching node, and having a second control terminal; a third switch coupled between the switching node and a bottom plate node and having a third control terminal; a fourth switch coupled between the bottom plate node and a ground terminal, and having a fourth control terminal; a flying capacitor coupled between the top plate node and the bottom plate node; a fifth switch coupled between the top plate node and an auxiliary node; a sixth switch coupled between the auxiliary node and the bottom plate node; and an auxiliary capacitor coupled between the auxiliary control terminal and a ground terminal.
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公开(公告)号：US20170302179A1
公开(公告)日：2017-10-19
申请号：US15396466
申请日：2016-12-31
Applicant: Texas Instruments Incorporated
Inventor： Saurav Bandyopadhyay , Thomas Matthew LaBella
CPC classification number: H02M3/158 , H02M1/08 , H02M2001/0058
Abstract: An example apparatus includes a first switch having a control terminal, coupled to a voltage source and coupled to a switch node; a second switch having a control terminal, coupled to the switch node and to a voltage reference; a first inductor coupled to the switch node and to a load; a third switch having a control terminal, coupled to the voltage source and to an auxiliary node; a fourth switch having a control terminal, coupled to the auxiliary node and to the voltage reference; a second inductor coupled to the switch node and the auxiliary node; a fifth switch having a control terminal, coupled to the switch node and to the auxiliary node; and timing circuitry configured to output signals to the control terminals of the first switch, the second switch, the third switch, the fourth switch and the fifth switch to supply current to the load.
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公开(公告)号：US11614368B2
公开(公告)日：2023-03-28
申请号：US16050949
申请日：2018-07-31
Applicant: Texas Instruments Incorporated
Inventor： Robert Allan Neidorff , Saurav Bandyopadhyay , Thomas Matthew LaBella
Abstract: Methods and apparatus to provide an adaptive gate driver for switching devices are disclosed. An example apparatus includes an electrical switch to drive an electrical system; a condition characterizer to select a drive strength based on a first system parameter corresponding to the electrical system, the first system parameter including at least one of an input voltage corresponding to the electrical switch, an output current corresponding to the electrical switch, or a process variation of the electrical switch; and a driver to generate an output having a current corresponding to the selected drive strength.
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公开(公告)号：US11031873B2
公开(公告)日：2021-06-08
申请号：US15396031
申请日：2016-12-30
Applicant: Texas Instruments Incorporated
Abstract: Embodiments include systems, methods, and apparatuses for controlling off-time during a burst mode in an LLC converter. In one embodiment, a circuit comprises an LLC converter having a primary side and a burst mode controller, the burst mode controller configured to monitor, on the primary side of the LLC converter, electrical current, and in response to a determination that the electrical current is below a first threshold, increase an off-time for switches in the LLC converter and in response to a determination that the electrical current is above a second threshold that is higher than the first threshold, decrease the off-time for the switches in the LLC converter.
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Patent Agency Ranking
公开(公告)号：US20210050782A1
公开(公告)日：2021-02-18
申请号：US16860511
申请日：2020-04-28
Applicant: Texas Instruments Incorporated
Inventor： Saurav Bandyopadhyay , Thomas Matthew LaBella , Huy Le Nhat Nguyen , Michael G. Amaro , Robert Allan Neidorff
IPC: H02M3/158 , H03K17/082 , G06F1/26
Abstract: A switch-mode power supply circuit includes a low-side switching transistor, a high-side switching transistor, a low-side current sensing circuit, and a gate driver circuit. The low-side current sensing circuit is coupled to the low-side switching transistor and is configured to sense a current flowing through the low-side switching transistor. The gate driver circuit is coupled to the low-side current sensing circuit and the high-side switching transistor. The gate driver circuit is configured to generate a signal having a first drive strength to switch the high-side switching transistor based on current flowing through the low-side switching transistor being less than a threshold current, and to generate a signal having a second drive strength to switch the high-side switching transistor based on current flowing through the low-side switching transistor being greater than the threshold current. The first drive strength is greater than the second drive strength.
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公开(公告)号：US10468988B2
公开(公告)日：2019-11-05
申请号：US16058859
申请日：2018-08-08
Applicant: Texas Instruments Incorporated
Inventor： Kevin Scoones , Orlando Lazaro , Alvaro Aguilar , Jeffrey Anthony Morroni , Reza Sharifi , Saurav Bandyopadhyay
Abstract: In a described example, an apparatus includes a first switch coupled between a terminal for receiving an input voltage and a top plate node, and having a first control terminal; a second switch coupled between the top plate node and a switching node, and having a second control terminal; a third switch coupled between the switching node and a bottom plate node and having a third control terminal; a fourth switch coupled between the bottom plate node and a ground terminal, and having a fourth control terminal; a flying capacitor coupled between the top plate node and the bottom plate node; a fifth switch coupled between the top plate node and an auxiliary node; a sixth switch coupled between the auxiliary node and the bottom plate node; and an auxiliary capacitor coupled between the auxiliary control terminal and a ground terminal.
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公开(公告)号：US10141846B2
公开(公告)日：2018-11-27
申请号：US15396471
申请日：2016-12-31
Applicant: Texas Instruments Incorporated
Inventor： Saurav Bandyopadhyay
IPC: H02M3/158
Abstract: A method of controlling a power converter, including executing a plurality of cycles, including: turning on a first switch during a first period, the first switch coupled to a power supply and a switch node; turning on a second switch during a second period, the second switch coupled to the switch node; turning on a third switch at a first time during the second period and turning the third switch off at a second time after the second period by a first open signal including a high discharge signal followed by a lower discharge signal, the third switch coupled to an auxiliary node and to a second inductor coupled to the auxiliary node; and turning on a fourth switch at a third time after the second time and turning the fourth switch off during the first period of a succeeding cycle, the fourth switch coupled to the auxiliary node.
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公开(公告)号：US09853547B2
公开(公告)日：2017-12-26
申请号：US15396466
申请日：2016-12-31
Applicant: Texas Instruments Incorporated
Inventor： Saurav Bandyopadhyay , Thomas Matthew LaBella
CPC classification number: H02M3/158 , H02M1/08 , H02M2001/0058
Abstract: An example apparatus includes a first switch having a control terminal, coupled to a voltage source and coupled to a switch node; a second switch having a control terminal, coupled to the switch node and to a voltage reference; a first inductor coupled to the switch node and to a load; a third switch having a control terminal, coupled to the voltage source and to an auxiliary node; a fourth switch having a control terminal, coupled to the auxiliary node and to the voltage reference; a second inductor coupled to the switch node and the auxiliary node; a fifth switch having a control terminal, coupled to the switch node and to the auxiliary node; and timing circuitry configured to output signals to the control terminals of the first switch, the second switch, the third switch, the fourth switch and the fifth switch to supply current to the load.
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公开(公告)号：US11799369B2
公开(公告)日：2023-10-24
申请号：US17512842
申请日：2021-10-28
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Song Guo , Saurav Bandyopadhyay
CPC classification number: H02M1/0009 , H02M3/158
Abstract: A current sense circuit includes a sense amplifier, a current mirror circuit, a resistor, a low-pass filter, and a capacitor. The sense amplifier is adapted to be coupled to a switching transistor of a DC-DC converter. The current mirror circuit is coupled to the sense amplifier, and is configured to generate a sense current proportional to a current flowing through the switching transistor. The resistor is coupled to the current mirror circuit, and is configured to generate a sense voltage based on the sense current. The low-pass filter is coupled to the resistor, and is configured to average the sense voltage over an averaging interval. The capacitor is coupled to the resistor, and is configured to store the sense voltage in a blanking interval that precedes the averaging interval, and provide a compensation current in the averaging interval.
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