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11.发明授权公开(公告)号：US10097089B2
公开(公告)日：2018-10-09
申请号：US15599579
申请日：2017-05-19
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Reza Sharifi , Kevin Scoones , Orlando Lazaro
Abstract: A voltage converter includes a high side transistor, a low side transistor coupled to the high side transistor at a switching node, and an inductor coupled to the switching node and providing an output node. A controller is provided that is coupled to the high side transistor and the low side transistor. The controller is configured to selectively turn on and off the high and low side transistors in a repeat cycle. The controller is configured to control the high and low side transistors to cause a sequence of packets of charge to be delivered to the inductor. Also included is an adaptive timer circuit coupled to the output node and the controller and configured to adaptively adjust the amount of charge in each packet based on the voltage ripple of the output node.
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公开(公告)号：US20240372462A1
公开(公告)日：2024-11-07
申请号：US18617020
申请日：2024-03-26
Applicant: Texas Instruments Incorporated
Inventor： Kevin Scoones , Orlando Lazaro , Ntiamoah Kwarteng
Abstract: Control circuits for DC-DC power converters. In one example, a control circuit includes a voltage control loop configured to produce a control voltage based on an output voltage of a DC-DC converter and a reference voltage, and a current control loop configured to produce a control current based on the control voltage. The current control loop may be further configured to adjust the control current based on a signal proportional to an input voltage of the DC-DC converter to provide an adjusted control current that is inversely proportional to the input voltage, and to produce, based on the adjusted control current and an inductor current in an inductor of the DC-DC converter, a drive signal to drive one or more power transistors of the DC-DC converter.
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公开(公告)号：US11916426B2
公开(公告)日：2024-02-27
申请号：US17114081
申请日：2020-12-07
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Hakan Oner , Kevin Scoones
CPC classification number: H02J7/007182 , H02H3/066 , H02J7/00714 , H02J2207/30
Abstract: A system includes: a switching converter circuit adapted to be coupled between an input voltage source and a load; and an integrated circuit adapted to be coupled between the input voltage source and a battery and configured to charge the battery. The integrated circuit has: a monitoring circuitry adapted to be coupled to the battery and configured to detect a transient fault condition of the integrated circuit; a power stage adapted to be coupled between the input voltage source and the battery, the power stage having a power switch; and a control circuit coupled between the monitoring circuitry and the power stage, the control circuit configured to provide a control signal to adjust a conductivity of the power switch responsive to a detected transient fault condition.
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公开(公告)号：US11362587B2
公开(公告)日：2022-06-14
申请号：US15858640
申请日：2017-12-29
Applicant: Texas Instruments Incorporated
Inventor： Orlando Lazaro , Kevin Scoones , Alvaro Aguilar , Jeffrey Anthony Morroni , Sombuddha Chakraborty
Abstract: In described examples of methods and control circuitry to control a multi-level power conversion system, the control circuitry generates PWM signals having a duty cycle to control an output signal. The duty cycle is adjustable in different switching cycles. States of the system's switches are adjustable in one or more intervals within the switching cycles. In response to a voltage across a capacitor of the system being outside a non-zero voltage range, the control circuitry adjusts states of the switches in two intervals to discharge or charge the capacitor in a given switching cycle.
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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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Patent Agency Ranking
16.发明授权公开(公告)号：US10651736B1
公开(公告)日：2020-05-12
申请号：US16233189
申请日：2018-12-27
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Orlando Lazaro , Alvaro Aguilar , Jeffrey Morroni , Kevin Scoones , Reza Sharifi
Abstract: A power converter device includes a set of switches configured to switch between at least three input-side voltage levels to provide output pulses. The power converter device also includes a control circuit for the set of switches, wherein the control circuit configured to selectively switch the power converter device between a continuous conduction mode of operation (CCM) having a first charge per pulse and a discontinuous conduction mode of operation (DCM) having a second charge per pulse, the second charge per pulse being greater than the first charge per pulse.
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公开(公告)号：US10439494B2
公开(公告)日：2019-10-08
申请号：US15909078
申请日：2018-03-01
Applicant: Texas Instruments Incorporated
Inventor： Reza Sharifi , Kevin Scoones , Orlando Lazaro , Alvaro Aguilar
Abstract: In described examples of methods and control circuitry to control a power conversion system, a regulator circuit is coupled to provide switching control signals according to a regulation signal to operate a plurality of converter switches to generate a voltage signal at a switching node. A compensation sense circuit is coupled to provide a compensation pulse signal having a duty cycle that represents a percentage of time that a current flowing through the switching node is above a threshold value. A current compensation circuit adjusts the regulation signal according to the compensation pulse signal.
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公开(公告)号：US20190058405A1
公开(公告)日：2019-02-21
申请号：US15858648
申请日：2017-12-29
Applicant: Texas Instruments Incorporated
Inventor： Orlando Lazaro , Kevin Scoones , Jeffrey Anthony Morroni , Alvaro Aguilar , Reza Sharifi
CPC classification number: H02M3/33569 , G05F1/575 , H02M1/08 , H02M3/06 , H02M3/158 , H02M2001/0003 , H02M2001/0009 , H03K7/08
Abstract: In described examples of methods and control circuitry to control a multi-level power conversion system with a flying capacitor, a power circuit regulates a regulator input voltage signal to provide a supply voltage signal to the control circuitry. A power switching circuit couples the regulator input to a first terminal of the flying capacitor in response to a second terminal of the flying capacitor being coupled to a reference voltage node in a given switching cycle, and couples the regulator input to the second terminal in response to the first terminal being coupled to an input node of the power conversion system in the given switching cycle.
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公开(公告)号：US20190058385A1
公开(公告)日：2019-02-21
申请号：US15858640
申请日：2017-12-29
Applicant: Texas Instruments Incorporated
Inventor： Orlando Lazaro , Kevin Scoones , Alvaro Aguilar , Jeffrey Anthony Morroni , Sombuddha Chakraborty
Abstract: In described examples of methods and control circuitry to control a multi-level power conversion system, the control circuitry generates PWM signals having a duty cycle to control an output signal. The duty cycle is adjustable in different switching cycles. States of the system's switches are adjustable in one or more intervals within the switching cycles. In response to a voltage across a capacitor of the system being outside a non-zero voltage range, the control circuitry adjusts states of the switches in two intervals to discharge or charge the capacitor in a given switching cycle.
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公开(公告)号：US09210748B2
公开(公告)日：2015-12-08
申请号：US14085765
申请日：2013-11-20
Applicant: Texas Instruments Incorporated
Inventor： David Wayne Evans , Kevin Scoones , James Larry Krug , Pradeep Katikaneni
IPC: H05B33/08
CPC classification number: H05B33/0815 , H05B33/0827 , Y10T307/406
Abstract: Systems and methods of driving multiple outputs are provided in which a single inductor may be used to drive multiple output such as independent strings of LEDs or white LEDs (WLEDs). In an example embodiment, a boost DC to DC converter may be used with a single inductor to drive multiple outputs. In an example embodiment, the error voltage of each of the multiple outputs is sampled during each cycle of the DC to DC converter and the largest error voltage is determined for that cycle. Power from the DC to DC converter is then supplied to that output during that cycle.
Abstract translation: 提供了驱动多个输出的系统和方法，其中可以使用单个电感器来驱动多个输出，例如独立的LED串或白色LED（WLED）。 在示例性实施例中，升压DC-DC转换器可以与单个电感器一起用于驱动多个输出。 在一个示例实施例中，在DC-DC转换器的每个周期期间对多个输出中的每一个的误差电压进行采样，并确定该周期的最大误差电压。 在该周期期间，从DC到DC转换器的电力被提供给该输出。
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