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公开(公告)号：US09548651B2
公开(公告)日：2017-01-17
申请号：US14330102
申请日：2014-07-14
Applicant: Texas Instruments Incorporated
Inventor： Song Guo
CPC classification number: H02M3/158 , H02M1/08 , H02M1/14 , H02M3/1588 , H02M2001/0009 , H02M2001/0025 , H02M2001/0032 , Y02B70/1466 , Y02B70/16
Abstract: A circuit for controlling a switched-mode DC-DC converter. An inductor is connected between a switching node and an output node, and an output capacitor is connected in series with the inductor. An RC circuit is connected in parallel with the inductor to compensate for ripple voltage. In a discontinuous current mode, a pulse is applied to the switching node and then removed. In this mode, an RC time constant for the RC circuit is increased during the falling edge of a difference signal such that the difference signal does not drop below zero.
Abstract translation: 一种用于控制开关模式DC-DC转换器的电路。 电感器连接在开关节点和输出节点之间，输出电容与电感串联。 RC电路与电感并联，以补偿纹波电压。 在不连续电流模式下，将脉冲施加到交换节点，然后去除。 在该模式中，RC电路的RC时间常数在差分信号的下降沿期间增加，使得差分信号不下降到零以下。
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公开(公告)号：US20240405676A1
公开(公告)日：2024-12-05
申请号：US18204278
申请日：2023-05-31
Applicant: Texas Instruments Incorporated
Inventor： Song Guo
Abstract: An example apparatus includes: a first switch having a first terminal coupled to a switch terminal and a second terminal coupled to a current sense positive (CSP) terminal; a second switch coupled to the CSP terminal and to a first resistor; the first resistor coupled to the second switch and to ground; a first capacitor having a positive terminal coupled to the CSP terminal and a negative terminal coupled to ground; a second resistor coupled to the CSP terminal and to a current sense negative (CSN) terminal; a second capacitor coupled to the CSN terminal and coupled to ground; a third switch coupled to the CSP terminal and a third resistor; the third resistor having coupled to the third switch and a voltage source; and the voltage source coupled to the third resistor and to ground.
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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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Patent Agency Ranking
公开(公告)号：US10931196B2
公开(公告)日：2021-02-23
申请号：US15226292
申请日：2016-08-02
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Song Guo
Abstract: A circuit includes an inductor that receives a switched input voltage to provide an output for driving a load. A driver circuit drives the switched input voltage to the inductor in response to input pulses. A ramp circuit coupled to the inductor generates a ramp signal emulating current of the inductor. A control circuit generates the input pulses to control the driver circuit based on the ramp signal and the output for driving the load. A transient monitoring circuit monitors the output with respect to a predetermined threshold and adjusts the ramp circuit based on the output relative to the predetermined threshold to control the emulated current of the inductor to facilitate jitter and load transient performance.
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公开(公告)号：US20170194862A1
公开(公告)日：2017-07-06
申请号：US15408134
申请日：2017-01-17
Applicant: Texas Instruments Incorporated
Inventor： Song Guo
CPC classification number: H02M3/158 , H02M1/08 , H02M1/14 , H02M3/1588 , H02M2001/0009 , H02M2001/0025 , H02M2001/0032 , Y02B70/1466 , Y02B70/16
Abstract: A voltage converter (FIG. 4) for a power supply circuit is disclosed. The voltage converter comprises a control circuit (400) coupled to receive an enable (EN) signal. The control circuit produces a first control signal (PWM) to provide a load current (IL) in response to the enable signal. A sample and hold circuit (408) is arranged to produce a third control signal (CSP) to emulate the load current and a fourth control signal (CSN′) to sample and hold value of the third control signal. A comparator circuit (416) is arranged to compare the third and fourth control signals and produce the enable signal in response to a result of the comparison.
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公开(公告)号：US20140239924A1
公开(公告)日：2014-08-28
申请号：US13774496
申请日：2013-02-22
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Song Guo
IPC: G05F1/46
Abstract: A voltage converter (FIG. 4) for a power supply circuit is disclosed. The voltage converter comprises a control circuit (400) coupled to receive an enable (EN) signal. The control circuit produces a first control signal (PWM) to provide a load current (IL) in response to the enable signal. A sample and hold circuit (408) is arranged to produce a third control signal (CSP) to emulate the load current and a fourth control signal (CSN′) to sample and hold value of the third control signal. A comparator circuit (416) is arranged to compare the third and fourth control signals and produce the enable signal in response to a result of the comparison.
Abstract translation: 公开了一种用于电源电路的电压转换器（图4）。 电压转换器包括耦合以接收使能（EN）信号的控制电路（400）。 控制电路产生第一控制信号（PWM），以响应于使能信号提供负载电流（IL）。 采样和保持电路（408）被布置成产生模拟负载电流的第三控制信号（CSP）和用于采样和保持第三控制信号的值的第四控制信号（CSN'）。 比较器电路（416）被布置为比较第三和第四控制信号，并响应于比较结果产生使能信号。
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公开(公告)号：US09317049B2
公开(公告)日：2016-04-19
申请号：US13774496
申请日：2013-02-22
Applicant: Texas Instruments Incorporated
Inventor： Song Guo
Abstract: A voltage converter (FIG. 4) for a power supply circuit is disclosed. The voltage converter comprises a control circuit (400) coupled to receive an enable (EN) signal. The control circuit produces a first control signal (PWM) to provide a load current (IL) in response to the enable signal. A sample and hold circuit (408) is arranged to produce a third control signal (CSP) to emulate the load current and a fourth control signal (CSN′) to sample and hold value of the third control signal. A comparator circuit (416) is arranged to compare the third and fourth control signals and produce the enable signal in response to a result of the comparison.
Abstract translation: 公开了一种用于电源电路的电压转换器（图4）。 电压转换器包括耦合以接收使能（EN）信号的控制电路（400）。 控制电路产生第一控制信号（PWM），以响应于使能信号提供负载电流（IL）。 采样和保持电路（408）被布置成产生模拟负载电流的第三控制信号（CSP）和用于采样和保持第三控制信号的值的第四控制信号（CSN'）。 比较器电路（416）被布置为比较第三和第四控制信号，并响应于比较结果产生使能信号。
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公开(公告)号：US20140320104A1
公开(公告)日：2014-10-30
申请号：US14330102
申请日：2014-07-14
Applicant: Texas Instruments Incorporated
Inventor： Song Guo
CPC classification number: H02M3/158 , H02M1/08 , H02M1/14 , H02M3/1588 , H02M2001/0009 , H02M2001/0025 , H02M2001/0032 , Y02B70/1466 , Y02B70/16
Abstract: A circuit for controlling a switched-mode DC-DC converter. An inductor is connected between a switching node and an output node, and an output capacitor is connected in series with the inductor. An RC circuit is connected in parallel with the inductor to compensate for ripple voltage. In a discontinuous current mode, a pulse is applied to the switching node and then removed. In this mode, an RC time constant for the RC circuit is increased during the falling edge of a difference signal such that the difference signal does not drop below zero.
Abstract translation: 一种用于控制开关模式DC-DC转换器的电路。 电感器连接在开关节点和输出节点之间，输出电容与电感串联。 RC电路与电感并联，以补偿纹波电压。 在不连续电流模式下，将脉冲施加到交换节点，然后去除。 在该模式中，RC电路的RC时间常数在差分信号的下降沿期间增加，使得差分信号不下降到零以下。
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