A WIDE SUPPLY RANGE BANDGAP VOLTAGE REFERENCE WITH CURVATURE COMPENSATION

作者：Shi, L. F.^*; Ma, X.; Qin, G. H.; Cheng, L. Y.; Lai, X. Q.

来源：Journal of Circuits, Systems, and Computers, 2013, 22(1): 1250068.

DOI：10.1142/S0218126612500685

• Bandgap voltage reference
• wide supply range
• curvature compensation
• temperature coefficient
• PSRR
• BCD process

For the requirement of power management controller chips, a wide supply range bandgap voltage reference circuit is presented. The preregulated circuit based on the regulation characteristic of zener diode extends the supply range and increases power supply rejection ratio (PSRR). Compensated by the base-emitter voltage (V-BE) linearization technique, the temperature stability of the bandgap circuit is improved further. The proposed circuit is implemented in a 0.4 mu m bipolar CMOS DMOS (BCD) process and Spice simulation has been done for validation. The results of simulation and test show that the supply range of this circuit can reach 7.2 V to 40 V and 159 mu V/V of supply voltage dependence; the temperature coefficient is just 3.5 ppm/degrees C over a wide temperature of -40 degrees C to 125 degrees C and PSRR is up to -94 dB at 1 kHz. For the perfective performance, this circuit can be used in wide temperature and wide supply range integrated circuit design.

• 出版日期2013-1
• 单位西安电子科技大学