Patent ID: 11916481
Assignee: FREMONT MICRO DEVICES CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. The application circuit of a Buck constant voltage driver according to claim 10, wherein the output voltage acquisition module comprises a first voltage dividing resistor and a second voltage dividing resistor, wherein the output voltage control module comprises an error amplifier, a compensation resistor, a compensation capacitor, a loop comparator, and a sampling amplification module;
wherein the first voltage dividing resistor and the second voltage dividing resistor are connected in series between the chip ground and a chip internal power supply terminal, wherein a negative input terminal of the error amplifier is connected between the first voltage dividing resistor and the second voltage dividing resistor, and a positive input terminal of the error amplifier is connected with an output terminal of the output voltage compensation module, an output terminal of the error amplifier is connected with the chip ground through the compensation resistor and the compensation capacitor, the output terminal of the error amplifier is further connected with a negative input terminal of the loop comparator, and a positive input terminal of the loop comparator is connected with an output terminal of the sampling amplification module, wherein an input terminal of the sampling amplification module is connected between the sampling resistor and the power tube, and an output terminal of the loop comparator is connected with the power tube control module.