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A High Accuracy and Configurable Voltage (1.2/1.8/2.5/3.3V) Bandgap Reference with Base Current Compensation for DC-DC Converters
  • Hao Zhou,
  • Yuanfei Wang,
  • Hao Min
Hao Zhou
Fudan University

Corresponding Author:[email protected]

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Yuanfei Wang
Zhuhai UM Science & Technology Research Institute
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Hao Min
Fudan University
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Presented is an improved bandgap reference, which has the performance of high accuracy and can generate the required voltage reference. In this bandgap reference, the improved base current compensation is proposed to eliminate the effect of the base current. Meanwhile, a high reference voltage generator is used to provide configurable output voltages of 1.2/1.8/2.5/3.3V needed by DC-DC converters. The bandgap reference is realized in a standard 180nm CMOS process with an area of 0.05 mm×mm. Among the 5 sample chips of the reference, in the temperature range of -40 oC to 125 oC, the temperature coefficients of all the reference voltages range from 3 ppm/oC to 38 ppm/oC. The best average value of temperature coefficients is 6.03 ppm/oC when the reference voltage is 2.5V. The best line sensitivities (LS) is 0.23%/V when the reference voltage is 1.8V with the power consumption of 150μW@VDD=5V;
17 May 2022Submitted to Electronics Letters
18 May 2022Assigned to Editor
18 May 2022Submission Checks Completed
28 May 2022Reviewer(s) Assigned
07 Jun 2022Review(s) Completed, Editorial Evaluation Pending
07 Jun 2022Editorial Decision: Accept