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公开(公告)号：US20190028031A1
公开(公告)日：2019-01-24
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
CPC classification number: H02M3/1588 , H02M3/158 , H02M7/483 , H02M2001/0006
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：US10141845B2
公开(公告)日：2018-11-27
申请号：US15366264
申请日：2016-12-01
Applicant: Texas Instruments Incorporated
Inventor： Saurav Bandyopadhyay , Robert A. Neidorff
Abstract: Disclosed examples provide DC-DC converters and control circuits to provide high and low-side driver signals and to selectively adjust a delay time between a low-side switching device turning off and a high-side switching device turning on according to a comparator signal, including a clocked comparator circuit referenced to a switching node to sample the voltage across the high-side switching device in response to a first edge of the high-side driver signal, and to generate the comparator signal indicating a polarity of the sampled high-side switch voltage to facilitate zero voltage switching of the high-side switching device.
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23.发明申请公开(公告)号：US20170302178A1
公开(公告)日：2017-10-19
申请号：US15366264
申请日：2016-12-01
Applicant: Texas Instruments Incorporated
Inventor： Saurav Bandyopadhyay , Robert A. Neidorff
IPC: H02M3/158 , H03K17/284
CPC classification number: H02M3/158 , H02M1/08 , H02M1/38 , H02M3/1588 , H02M2001/0058 , H03K17/133 , H03K17/284 , H03K2217/0063 , H03K2217/0072
Abstract: Disclosed examples provide DC-DC converters and control circuits to provide high and low-side driver signals and to selectively adjust a delay time between a low-side switching device turning off and a high-side switching device turning on according to a comparator signal, including a clocked comparator circuit referenced to a switching node to sample the voltage across the high-side switching device in response to a first edge of the high-side driver signal, and to generate the comparator signal indicating a polarity of the sampled high-side switch voltage to facilitate zero voltage switching of the high-side switching device.
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Patent Agency Ranking
公开(公告)号：US12191861B2
公开(公告)日：2025-01-07
申请号：US18169138
申请日：2023-02-14
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Nilanjan Pal , Saurav Bandyopadhyay
Abstract: A circuit includes a comparator having first and second comparator inputs and a comparator output. A discharge switch is coupled between the first comparator input and a ground terminal. A capacitor has first and second capacitor terminals, in which the first capacitor terminal is coupled to the first comparator input. A delay correction circuit includes a sample-hold circuit coupled to the first capacitor terminal and the second capacitor terminal. An amplifier has a first amplifier input coupled to a hold output of the sample-hold circuit and a second amplifier input coupled to the second comparator input. A variable resistor is coupled between the second capacitor terminal and the ground terminal, and has a control input coupled to the amplifier output.
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公开(公告)号：US10075080B1
公开(公告)日：2018-09-11
申请号：US15697275
申请日：2017-09-06
Applicant: Texas Instruments Incorporated
Inventor： Kevin Scoones , Orlando Lazaro , Alvaro Aguilar , Jeffrey Anthony Morroni , Reza Sharifi , Saurav Bandyopadhyay
CPC classification number: H02M3/1588 , H02M3/158 , H02M7/483 , H02M2001/0006
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：US20180191271A1
公开(公告)日：2018-07-05
申请号：US15395971
申请日：2016-12-30
Applicant: Texas Instruments Incorporated
Inventor： Salvatore Giombanco , Saurav Bandyopadhyay , Salvatore Vincenzo Capici
CPC classification number: H02M7/4826 , H02M1/4241 , H02M3/07 , H02M3/33576 , H02M7/043 , H02M7/217 , H02M7/523 , H02M2001/0009 , H02M2001/0058 , H02M2007/4811 , H02M2007/4815 , H02M2007/4818 , Y02B70/1433 , Y02B70/1441 , Y02B70/1491
Abstract: Embodiments includes systems, methods, and apparatuses for determining a resonant frequency of an LLC converter via a primary side of the LLC converter. In one embodiment, a circuit comprises an LLC converter and a resonant frequency determination unit, the resonant frequency determination unit configured to monitor electrical current on the primary side of the LLC converter, isolate a portion of the electrical current, determine, based on the portion of the electrical current, a crossing point, and determine, based on the crossing point, a resonant frequency of the LLC converter.
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公开(公告)号：US20180191256A1
公开(公告)日：2018-07-05
申请号：US15396031
申请日：2016-12-30
Applicant: Texas Instruments Incorporated
CPC classification number: H02M3/33546 , H02M1/08 , H02M3/33592 , H02M2001/0009 , H02M2001/0035 , H02M2001/0058 , Y02B70/1475 , Y02B70/1491 , Y02B70/16
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：US09660531B1
公开(公告)日：2017-05-23
申请号：US14932705
申请日：2015-11-04
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Monodeep Kar , Saurav Bandyopadhyay , Jeffrey Morroni
IPC: H02M3/158
CPC classification number: H02M3/1588 , Y02B70/1466
Abstract: A power converter includes a power stage having a switch-node of a switched-mode power supply that is coupled to an input voltage node by a power field-effect transistor (FET) to energize an inductive circuit and is coupled to a ground node by a synchronous rectifier in parallel with the inductive circuit. The power converter also includes a controller coupled to the power stage. The controller controls switching of the power FET and synchronous rectifier in a complimentary manner. The controller switches on the power FET during a first switching cycle. Subsequently, the controller switches on the synchronous rectifier and, in response to a current through the inductive circuit being approximately zero, switches off the synchronous rectifier. Subsequently, the controller switches on the synchronous rectifier again to generate a negative current through the inductive circuit prior to entering a second switching cycle.
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