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公开(公告)号：US10581325B1
公开(公告)日：2020-03-03
申请号：US16183375
申请日：2018-11-07
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Michael James Munroe
Abstract: A converter circuit includes a power stage circuit configured to convert an input voltage received by an inductor to an output voltage provided at an output; a control circuit configured to generate input pulses to control the power stage circuit; a slope compensation circuit configured to provide a compensation signal to the control circuit for overcoming a sub-harmonic oscillation in the converter circuit, wherein the control circuit is configured to generate the input pulses based at least in part on the compensation signal; a slope compensation adjustment circuit configured to determine a rate of change of a current at the inductor and to provide a slope compensation adjustment signal based on the determined rate of change; and a modulation circuit configured to modulate the compensation signal with the slope compensation adjustment signal to produce the adjusted slope compensation signal.
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公开(公告)号：US20190204366A1
公开(公告)日：2019-07-04
申请号：US15858564
申请日：2017-12-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Siyuan Zhou , Michael James Munroe , Stephen Isaac Brink
CPC classification number: G01R19/2509 , G01R19/2513 , H02M3/158 , H02M2001/0009
Abstract: A device for averaging a sensed current includes a sampling circuit that samples at least two sampling points of each cycle of a front-end alternating current (AC) sensed signal. The two sampling points is substantially symmetrical with respect to a midpoint of each respective cycle of the front-end AC sensed signal. The device also includes a timing circuit that controls a timing of the sampling circuit to sample the front-end AC sensed signal on the at least two sampling points based on a timing signal generated by the timing circuit. The device further includes an averaging circuit that averages the two sampling points for a given cycle of the front-end AC sensed signal to produce an average sensed current.
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Patent Agency Ranking
3.发明申请公开(公告)号：US20180278160A1
公开(公告)日：2018-09-27
申请号：US15927442
申请日：2018-03-21
Applicant: Texas Instruments Incorporated
Inventor： Michael James Munroe , Stephen Isaac Brink
CPC classification number: H02M3/158 , H02M1/088 , H02M3/157 , H02M2001/0012 , H02M2001/0025 , H03M1/124
Abstract: An integrated circuit having at least one electrically-controlled control loop that includes one or more loop error amplifiers also includes an analog-to-digital converter having both an input that operably couples to two inputs of each loop error amplifier and an output that couples to an off-chip hardware component comprising a control circuit. This control circuit reads digital versions that correspond to the loop error amplifier inputs. When a particular first input is greater than a second input, the control circuit sources a calibration signal to modify and offset for the loop error amplifier in a first direction. When the first input is less than the second input, the control circuit sources a calibration signal to modify the offset for the loop error amplifier in a second direction that is different from the aforementioned first direction. By one approach the control circuit also controls a sampling rate of the analog-to-digital converter.
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公开(公告)号：US11381167B2
公开(公告)日：2022-07-05
申请号：US16773239
申请日：2020-01-27
Applicant: Texas Instruments Incorporated
Inventor： Michael James Munroe
Abstract: A converter circuit includes a power stage circuit configured to convert an input voltage received by an inductor to an output voltage provided at an output; a control circuit configured to generate input pulses to control the power stage circuit; a slope compensation circuit configured to provide a compensation signal to the control circuit for overcoming a sub-harmonic oscillation in the converter circuit, wherein the control circuit is configured to generate the input pulses based at least in part on the compensation signal; a slope compensation adjustment circuit configured to determine a rate of change of a current at the inductor and to provide a slope compensation adjustment signal based on the determined rate of change; and a modulation circuit configured to modulate the compensation signal with the slope compensation adjustment signal to produce the adjusted slope compensation signal.
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公开(公告)号：US20200161975A1
公开(公告)日：2020-05-21
申请号：US16773239
申请日：2020-01-27
Applicant: Texas Instruments Incorporated
Inventor： Michael James Munroe
Abstract: A converter circuit includes a power stage circuit configured to convert an input voltage received by an inductor to an output voltage provided at an output; a control circuit configured to generate input pulses to control the power stage circuit; a slope compensation circuit configured to provide a compensation signal to the control circuit for overcoming a sub-harmonic oscillation in the converter circuit, wherein the control circuit is configured to generate the input pulses based at least in part on the compensation signal; a slope compensation adjustment circuit configured to determine a rate of change of a current at the inductor and to provide a slope compensation adjustment signal based on the determined rate of change; and a modulation circuit configured to modulate the compensation signal with the slope compensation adjustment signal to produce the adjusted slope compensation signal.
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公开(公告)号：US10578654B2
公开(公告)日：2020-03-03
申请号：US15858564
申请日：2017-12-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Siyuan Zhou , Michael James Munroe , Stephen Isaac Brink
Abstract: A device for averaging a sensed current includes a sampling circuit that samples at least two sampling points of each cycle of a front-end alternating current (AC) sensed signal. The two sampling points is substantially symmetrical with respect to a midpoint of each respective cycle of the front-end AC sensed signal. The device also includes a timing circuit that controls a timing of the sampling circuit to sample the front-end AC sensed signal on the at least two sampling points based on a timing signal generated by the timing circuit. The device further includes an averaging circuit that averages the two sampling points for a given cycle of the front-end AC sensed signal to produce an average sensed current.
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公开(公告)号：US10481193B2
公开(公告)日：2019-11-19
申请号：US15887531
申请日：2018-02-02
Applicant: Texas Instruments Incorporated
Inventor： Daniel Alexander Katz , Michael James Munroe
IPC: G01R31/00 , G01R31/02 , G01R19/165 , H03K19/003 , G01R31/30 , G01R31/319 , G01R31/28 , G01R31/3185 , H02M1/00
Abstract: A programmable load transient circuit includes a switchable power device for coupling a DUT output to its non-control node in series with a current sense device. A feedback loop is between the current sense device and the power device's control node that includes an integrator including an amplifier coupled to receive a signal that is a function of an average load current (IDavg) supplied by the DUT from the current sense device and to receive a reference voltage (Vref). The integrator provides an output drive voltage that is coupled to an input of a level shifter which receives a pulse signal or DC level at another of its inputs. The level shifter provides an output waveform or DC voltage to the power device's control node that is a function of IDavg.
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