A high accuracy and configurable voltage (1.2/1.8/2.5/3.3 V) bandgap reference with base current compensation for DC–DC converters
Abstract Presented is an improved bandgap reference (BGR), which has the performance of high accuracy and can generate the required voltage reference. In this BGR, the improved base current compensation is proposed to eliminate the effect of the base current. Meanwhile, a high reference voltage gene...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-07-01
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| Series: | Electronics Letters |
| Online Access: | https://doi.org/10.1049/ell2.12559 |
| Summary: | Abstract Presented is an improved bandgap reference (BGR), which has the performance of high accuracy and can generate the required voltage reference. In this BGR, 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 1.2/1.8/2.5/3.3 V needed by DC–DC converters. The BGR is realized in a standard 180‐nm Complementary Metal Oxide Semiconductor (CMOS) process with an area of 0.05 mm × mm. Among the five sample chips of the reference, in the temperature range of −40°C to 125°C, the temperature coefficients (TCs) of all the reference voltages range from 3 to 38 ppm/°C. The best average value of TCs is 6.03 ppm/°C when the reference voltage is 2.5 V. The best line sensitivities (LS) are 0.23%/V when the reference voltage is 1.8 V with the power consumption of 150μW, when the supply voltage (VDD) is =5 V. |
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| ISSN: | 0013-5194 1350-911X |