Load switch circuit

• Main Authors: XIA XUE, CHEN YONG, REN YUDI, WANG WAN, SUN QUAN
• Format: Patent
• Language: Chinese; English
• Published: 09.02.2024
• Subjects: BASIC ELECTRONIC CIRCUITRY; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; PULSE TECHNIQUE

The invention provides a load switch circuit, which belongs to the technical field of switch control circuits and comprises a first N-type power MOS (Metal Oxide Semiconductor) tube MN2, a second N-type power MOS tube MN2 and a third N-type power MOS tube MN2, a second N-type power MOS tube MN1; the source electrode of the second N-type power MOS tube MN1 is connected with the input end IN of the external power supply; the drain electrode of the second N-type power MOS tube MN1 is connected with the drain electrode of the first N-type power MOS tube MN2; an enabling control signal output end DRV1 of the driver DRIVER is connected with a grid electrode of the second N-type power MOS tube MN1, and an analog control signal output end DRV2 of the driver DRIVER is connected with a grid electrode of the first N-type power MOS tube MN2; the backward voltage detection circuit is connected with the input end IN of the external power supply and the output end OUT of the external power supply; the level detection module