DC-DC变换器带隙基准电压的设计

2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference Pub Date : 2013-07-21 DOI:10.1109/CSQRWC.2013.6657429

Zhou Qianneng, Xue Rong, Li Hongjuan, Lin Yunsong, Tang Liang, Zhai Pengpeng

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引用次数: 1

摘要

本文采用预稳压技术，设计了一种用于DC-DC变换器的高PSRR带隙基准电压。在CSMC 0.5μm CMOS混合信号处理中对所设计的BGR进行了分析和仿真。温度在-30℃~ 75℃范围内，BGR输出电压Vref的温度系数仅为19ppm/℃。当电源电压VDD由2.5V变为9V时，Vref只有0.29mV的偏差。通过采用预稳压技术，设计的BGR输出电压Vref在10Hz、100Hz、1kHz、10kHz和100kHz时的PSRR分别达到-98.41dB、-98.38dB、-96.28dB、-78.24dB和-43.39dB。

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Design of bandgap voltage reference for DC-DC converter

In this paper, a high PSRR bandgap voltage reference (BGR) is designed for DC-DC converter by adopting pre-regulator technique. The designed BGR is analyzed and simulated in CSMC 0.5μm CMOS mixed signal process. When temperature is in the range from -30°C to 75°C, the temperature coefficient of the BGR output voltage V_ref is only 19ppm/°C. V_ref has only deviation of 0.29mV when power supply voltage V_DD changes from 2.5V to 9V. By adopting pre-regulator technique, the PSRR of the designed BGR output voltage V_ref at 10Hz, 100Hz, 1kHz, 10kHz and 100kHz achieves -98.41dB, -98.38dB, -96.28dB, -78.24dB and -43.39dB respectively.

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2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference

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