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公开(公告)号：US12228954B2
公开(公告)日：2025-02-18
申请号：US17064480
申请日：2020-10-06
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ruchi Shankar , Somshubhra Paul , Gaurang Helekar
Abstract: A system includes a voltage regulator having an output voltage and a power management system, coupled to the voltage regulator. The power management system operable to determine whether the output voltage is within an active range, set the active range to a first range during a first time, or during a first mode, and set the active range to a second range for a second time, or during a second mode.
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公开(公告)号：US10795391B2
公开(公告)日：2020-10-06
申请号：US14845579
申请日：2015-09-04
Applicant: Texas Instruments Incorporated
Inventor： Ruchi Shankar , Somshubhra Paul , Gaurang Helekar
Abstract: A system includes a voltage regulator having an output voltage; a power management system, coupled to the voltage regulator, operable to continuously monitor the output voltage to determine whether the output voltage is within a range; and the power management system is operable to set the range to a normal range during normal operation, and is operable to increase the range beyond the normal range during a low power mode and during a wake-up period from a low power mode.
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公开(公告)号：US20190131967A1
公开(公告)日：2019-05-02
申请号：US15834599
申请日：2017-12-07
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Deep Banerjee , Lokesh Kumar Gupta , Somshubhra Paul
IPC: H03K17/687 , G05F3/26
CPC classification number: H03K17/6871 , G05F3/262 , H03K17/163 , H03K17/302 , H04L12/4013 , H04L2012/40234
Abstract: A driver includes an open drain output transistor, a capacitor, a first current source, and first and second transistors. Upon assertion of a transmit signal to turn on the first transistor, a controller asserts a second control signal to turn on the second transistor responsive to a voltage of the capacitor being less than a threshold voltage of the open drain output transistor to thereby increase the gate voltage for the open drain output transistor at a first time rate. The controller deasserts the second control signal to turn off the second transistor responsive to the capacitor voltage exceeding the threshold voltage. Responsive to the capacitor's voltage exceeding the threshold, the first current source charges the capacitor to further increase the gate voltage at a second time rate that is smaller than the first time rate.
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公开(公告)号：US09429971B2
公开(公告)日：2016-08-30
申请号：US14453059
申请日：2014-08-06
Applicant: Texas Instruments Incorporated
Inventor： Suresh Mallala , Somshubhra Paul
Abstract: Circuits and methods for providing short-circuit protection in a voltage regulator are disclosed. A voltage regulator includes a pass switch, a voltage error amplifier, a driver circuit, and a short-circuit protection circuit. The pass element is coupled to a power supply and a load, and generates an output voltage in response to a drive signal. The voltage error amplifier generates an error voltage based on a difference of a reference voltage and the output voltage and the driver circuit generates the drive signal in response to the error voltage. The short-circuit protection circuit senses the drive signal and provides a high-resistance path to the driver circuit in a short-circuit event. In a short-circuit event, the high-resistance path clamps current in the driver circuit thereby clamping a voltage difference between the first and third terminals and thereby limiting a load current in the short-circuit event.
Abstract translation: 公开了在电压调节器中提供短路保护的电路和方法。 电压调节器包括通过开关，电压误差放大器，驱动电路和短路保护电路。 传递元件耦合到电源和负载，并且响应于驱动信号而产生输出电压。 电压误差放大器基于参考电压和输出电压的差异产生误差电压，并且驱动器电路响应于误差电压产生驱动信号。 短路保护电路感应驱动信号，并在短路事件中提供驱动电路的高电阻路径。 在短路事件中，高电阻路径夹紧驱动电路中的电流，从而钳位第一和第三端子之间的电压差，从而限制短路事件中的负载电流。
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