Invention Grant
- Patent Title: Short-circuit protection for voltage regulators
- Patent Title (中): 稳压器短路保护
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Application No.: US14453059Application Date: 2014-08-06
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Publication No.: US09429971B2Publication Date: 2016-08-30
- 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
- Agent John R. Pessetto; Frank D. Cimino
- Main IPC: H02H3/00
- IPC: H02H3/00 ; G05F1/569

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
- US20160043539A1 SHORT-CIRCUIT PROTECTION FOR VOLTAGE REGULATORS Public/Granted day:2016-02-11
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