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公开(公告)号：US20170317674A1
公开(公告)日：2017-11-02
申请号：US15653562
申请日：2017-07-19
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Yogesh Kumar Ramadass
IPC: H03K17/687
CPC classification number: H03K17/687 , H03K17/162 , H03K17/567 , H03K2217/0036
Abstract: Embodiment of the inventive subject matter include an apparatus comprising a first switch, a second switch, a third switch, and a transistor. The first switch is coupled to a first voltage device and the transistor to selectively electrically connect the first voltage device to the transistor to provide a first charge to the transistor. The second switch is coupled to a second voltage device and the transistor to selectively electrically connect the second voltage device to the transistor to remove charge from the transistor. The third switch is coupled to the third voltage device and the transistor to selectively couple the third voltage device to the transistor to provide a second charge to the transistor.
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公开(公告)号：US20240194574A1
公开(公告)日：2024-06-13
申请号：US18585629
申请日：2024-02-23
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Benjamin Stassen Cook , Yogesh Kumar Ramadass , Salvatore Frank Pavone , Mahmud Halim Chowdhury
IPC: H01L23/495 , H01L23/00
CPC classification number: H01L23/49589 , H01L23/4951 , H01L23/49524 , H01L24/32 , H01L24/73 , H01L24/11 , H01L24/13 , H01L24/16 , H01L24/92 , H01L2224/11462 , H01L2224/13147 , H01L2224/13564 , H01L2224/1357 , H01L2224/16245 , H01L2224/32265 , H01L2224/73203 , H01L2224/73253 , H01L2224/9211 , H01L2924/19015 , H01L2924/19041 , H01L2924/19103 , H01L2924/19104
Abstract: Disclosed embodiments include an integrated circuit (IC) comprising a silicon wafer, first and second conductive lines on the silicon wafer. There are first, second and third insulation blocks with portions on the first and second conductive lines and the silicon wafer, a metal pillar on the surface of the first conductive line opposite the silicon wafer, and a conductive adhesive block on the surface of the second conductive line opposite the silicon wafer. The IC also has a lead frame having first and second leads, and a capacitor having first and second capacitor terminals in which the first capacitor terminal is connected to the second lead using conductive adhesive, the second capacitor terminal is connected to the second conductive line through the conductive adhesive block, and the first lead is coupled to the first conductive line.
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公开(公告)号：US11616433B2
公开(公告)日：2023-03-28
申请号：US17223786
申请日：2021-04-06
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ashish Kumar , Yogesh Kumar Ramadass , Manish Bhardwaj
Abstract: In a described example, a circuit includes a sensor, a controller and an amplifier. The sensor has a sensor input and a sensor output. The sensor input is adapted to be coupled to a chassis of a switch-mode power supply (SMPS). The controller has an input, a timing output and a level output. The input of the control circuit is coupled to the sensor output. The amplifier has a timing control input, a level control input and an amplifier output. The level control input is coupled to the level output of the controller. The timing control input is coupled to the timing output, and the amplifier output is coupled to the sensor input. The amplifier is configured to provide compensation pulses at the amplifier output having magnitude and timing to reduce common-mode noise on the chassis.
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公开(公告)号：US20210305893A1
公开(公告)日：2021-09-30
申请号：US17138660
申请日：2020-12-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ashish Kumar , Haoquan Zhang , Yogesh Kumar Ramadass
Abstract: Capacitively isolated current-loaded or current-driven charge pump circuits and related methods transfer electrical energy from a primary side to a secondary side over a capacitive isolation boundary, using a controlled current source to charge isolation capacitors with constant current, as opposed to current impulses, while maintaining output voltage within tolerance. The charge pump circuits provide DC-to-DC converters that can be used in isolated power supplies, particularly in low-power applications and in such devices as sensor transmitters that have separate electrical ground planes. The devices and methods transfer electrical energy over an isolated capacitive barrier in a manner that is efficient, inexpensive, and reduces electromagnetic interference (EMI).
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公开(公告)号：US10965279B2
公开(公告)日：2021-03-30
申请号：US16360927
申请日：2019-03-21
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Yogesh Kumar Ramadass , Bhushan Talele , Shailendra Kumar Baranwal , Yinglai Xia , Junmin Jiang
Abstract: A multi-level ramp generator comprises three ramp generators. The first ramp generator generates a first ramp signal, comprising a sawtooth voltage waveform with a first common mode voltage and a first peak to peak voltage. The second ramp generator generates a second ramp signal, comprising a sawtooth voltage waveform with a second common mode voltage and a second peak-to-peak voltage. The third ramp generator generates a third ramp signal, comprising a sawtooth voltage waveform with a third common mode voltage and the second peak-to-peak voltage. The second and third ramp signals are in phase with each other and the first ramp signal is 180° out of phase with the second and third ramp signals. In some implementations, each of the first, second, and third ramp generators comprise a respective delay locked loop and a respective voltage controlled oscillator.
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Patent Agency Ranking
公开(公告)号：US20200241071A1
公开(公告)日：2020-07-30
申请号：US16730047
申请日：2019-12-30
Applicant: Texas Instruments Incorporated
Inventor： Yogesh Kumar Ramadass
IPC: G01R31/3185 , G01R31/28 , G01R1/067 , G01R19/145 , G01R19/252
Abstract: An integrated circuit includes a semiconductor die having conductive pads and an electronic component with a first terminal coupled to a third conductive pad and a second terminal coupled to a fourth conductive pad. A resistor has a first terminal coupled to the fourth conductive pad and a second terminal coupled to the fifth conductive pad, and a first transistor has a first terminal coupled to the first conductive pad, a second terminal coupled to the fifth conductive pad, and a control terminal. A second transistor has a first terminal coupled to the first transistor, a second terminal coupled to the third conductive pad, and a control terminal. A pulse generator has an input coupled to the second conductive pad and an output coupled to the control terminal of the second transistor.
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公开(公告)号：US10581312B2
公开(公告)日：2020-03-03
申请号：US15859039
申请日：2017-12-29
Applicant: Texas Instruments Incorporated
Abstract: In described examples, a system regulates provision of DC-DC electrical power. The system includes a DC-DC converter, an input voltage node to receive an input voltage, a current source, a voltage source node, and a ground switch. The DC-DC converter includes a flying capacitor and multiple converter switches. The current source is coupled between the input voltage node and a top plate of the flying capacitor, to provide current to the top plate when the current source is activated by an activation voltage. The voltage source node is coupled to the input voltage node and to the current source, to provide the activation voltage to the current source, such that the activation voltage is not higher than a selected voltage between: a breakdown voltage of the converter switches; and a maximum value of the input voltage minus the breakdown voltage. The ground switch is coupled between a bottom plate of the flying capacitor and a ground.
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公开(公告)号：US10536072B2
公开(公告)日：2020-01-14
申请号：US15944833
申请日：2018-04-04
Applicant: Texas Instruments Incorporated
Inventor： Nachiket Venkappayya Desai , Yogesh Kumar Ramadass
Abstract: A circuit includes a transformer configured with a primary winding and a secondary winding that are driven from a voltage supplied by a thermoelectric generator (TEG). The circuit includes a bipolar startup stage (BSS) coupled to the transformer to generate an intermediate voltage. The BSS includes a first transistor device coupled in series with the primary winding of the transformer to form an oscillator circuit with an inductance of the secondary winding when the voltage supplied by the TEG is positive. A second transistor device coupled to the secondary winding of the transformer enables the oscillator circuit to oscillate when the voltage supplied by the TEG is negative. After startup, a flyback converter stage can be enabled from the intermediate voltage to generate a boosted regulated output voltage.
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公开(公告)号：US10447158B2
公开(公告)日：2019-10-15
申请号：US15200793
申请日：2016-07-01
Applicant: Texas Instruments Incorporated
Inventor： Chih-Wei Chen , Yogesh Kumar Ramadass
Abstract: A method for operating a multi-level converter is disclosed. A multi-level converter is provided with a plurality of switches connected in series and a flying capacitor connected to switch nodes of the plurality of switches. The switch nodes are biased initially to a fraction of an input voltage when the input voltage is initially applied to the plurality of switches. The flying capacitor is then precharged to a flying capacitor operating voltage. The multi-level converter is then operated after the flying capacitor is precharged by activating control signals to the plurality of switches. Diversion of precharge current by the plurality of switches may be performed while the flying capacitor is being precharged.
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公开(公告)号：US20190207505A1
公开(公告)日：2019-07-04
申请号：US15859039
申请日：2017-12-29
Applicant: Texas Instruments Incorporated
Abstract: In described examples, a system regulates provision of DC-DC electrical power. The system includes a DC-DC converter, an input voltage node to receive an input voltage, a current source, a voltage source node, and a ground switch. The DC-DC converter includes a flying capacitor and multiple converter switches. The current source is coupled between the input voltage node and a top plate of the flying capacitor, to provide current to the top plate when the current source is activated by an activation voltage. The voltage source node is coupled to the input voltage node and to the current source, to provide the activation voltage to the current source, such that the activation voltage is not higher than a selected voltage between: a breakdown voltage of the converter switches; and a maximum value of the input voltage minus the breakdown voltage. The ground switch is coupled between a bottom plate of the flying capacitor and a ground.
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