Voltage droop

Voltage droop is the intentional loss in output voltage from a device as it drives a load. Employing droop in a voltage regulation circuit increases the headroom for load transients.

Although it may seem counterproductive, a series resistor is included between the regulator output and the load. The resistance needs to be chosen so that at maximum output current, the output voltage at the load is the minimum acceptable. Conversely, when the output current is (near) zero, the voltage is near the maximum. This follows simply from Ohm's law. The behaviour of the system with and without the added droop resistor is as follows:

单词	Voltage droop
释义	Voltage droop 英语百科 Voltage droop Voltage droop is the intentional loss in output voltage from a device as it drives a load. Employing droop in a voltage regulation circuit increases the headroom for load transients. Although it may seem counterproductive, a series resistor is included between the regulator output and the load. The resistance needs to be chosen so that at maximum output current, the output voltage at the load is the minimum acceptable. Conversely, when the output current is (near) zero, the voltage is near the maximum. This follows simply from Ohm's law. The behaviour of the system with and without the added droop resistor is as follows:
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