公开(公告)号：US10423188B1

公开(公告)日：2019-09-24

申请号：US16029648

申请日：2018-07-09

Applicant: Faraday Technology Corp.

Inventor： Jin-Sheng Chen

IPC: G05F3/26 ,  G05F3/24 ,  G05F1/46 ,  H02M1/00 ,  H02M1/36

Abstract: In a voltage generating circuit, a bandgap voltage generator has a first operational amplifier to receive a first voltage and a second voltage, and generate a bias voltage by comparing the first voltage and the second voltage, wherein the bandgap voltage generator generates a bandgap current according to the bias voltage and generates an output voltage according to the bandgap current. In a start-up circuit, a comparison circuit compares the first voltage or the second voltage with a reference voltage to generate a first comparison result, and generates a first current according to the first comparison result. A voltage regulator generates a second current according to the first current, and compares the second current with a reference current to generate a second comparison result, and adjusts a voltage value of the bias voltage according to the second comparison result.

公开(公告)号：US20190310676A1

公开(公告)日：2019-10-10

申请号：US16029648

申请日：2018-07-09

Applicant: Faraday Technology Corp.

Inventor： Jin-Sheng Chen

IPC: G05F3/26

Abstract: In a voltage generating circuit, a bandgap voltage generator has a first operational amplifier to receive a first voltage and a second voltage, and generate a bias voltage by comparing the first voltage and the second voltage, wherein the bandgap voltage generator generates a bandgap current according to the bias voltage and generates an output voltage according to the bandgap current. In a start-up circuit, a comparison circuit compares the first voltage or the second voltage with a reference voltage to generate a first comparison result, and generates a first current according to the first comparison result. A voltage regulator generates a second current according to the first current, and compares the second current with a reference current to generate a second comparison result, and adjusts a voltage value of the bias voltage according to the second comparison result.