| 摘要 |
In described examples of circuits and methods for providing short-circuit protection in a voltage regulator, a voltage regulator (200) includes a pass switch (205), a voltage error amplifier (210), a driver circuit (220), and a short-circuit protection circuit (225). The pass element (205) is coupled to a power supply (234) and a load, and generates an output voltage in response to a drive signal. The voltage error amplifier (210) generates an error voltage based on a difference of a reference voltage and the output voltage, and the driver circuit (220) generates the drive signal in response to the error voltage. The short-circuit protection circuit (225) senses the drive signal and provides a high-resistance path to the driver circuit (220) in a short-circuit event. In a short-circuit event, the high-resistance path clamps current in the driver circuit (220), clamps a voltage difference between the first and third terminals, and limits a load current (232) in the short-circuit event. |
