Invention Application
- Patent Title: SHORT-CIRCUIT PROTECTION FOR VOLTAGE REGULATORS
- Patent Title (中): 电压调节器的短路保护
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Application No.: US14453059Application Date: 2014-08-06
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Publication No.: US20160043539A1Publication Date: 2016-02-11
- Inventor: Suresh Mallala , Somshubhra Paul
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Main IPC: H02H7/12
- IPC: H02H7/12 ; H02M3/158

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.
Public/Granted literature
- US09429971B2 Short-circuit protection for voltage regulators Public/Granted day:2016-08-30
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