Novel high-precision band-gap reference source

• Main Authors: ZHUANG HAOYU, LI YIZHAN, HUANG LIANGCHEN, LI QIANG, WANG XINGYU
• Format: Patent
• Language: Chinese; English
• Published: 26.01.2024
• Subjects: CONTROLLING; PHYSICS; REGULATING; SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES

The invention discloses a novel high-precision band-gap reference source, which belongs to the technical field of analog integrated circuits and comprises a switch module, a PTAT current generation and high-temperature turn-off module, a base current compensation module, an output driver, a nonlinear compensation current generation module and a Vref generator. The switch module, the PTAT current generation and high-temperature turn-off module, the output driver, the nonlinear compensation current generation module and the Vref generator are connected in sequence; the base current compensation module is also connected with the Vref generator and the output driver; and the output driver is also connected with the Vref generator to form a negative feedback loop. The circuit has the characteristics of low temperature coefficient, no operational amplifier, high load capacity and wide working voltage range, has the function of automatic turn-off at high temperature, plays a role in saving power consumption at high