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2017•AIP conference proceedingsOpen access

High PSRR bandgap reference used in boost circuit

Yi Li, Baoxing Duan, Yong Wang, Yintang Yang

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Abstract

Based on pre-regulated voltage structure, a voltage bandgap reference with high power supply rejection ratio (PSRR) is presented in this paper. A pre-regulated voltage structure is used in the circuit to achieve isolating the supply voltage of the bandgap core circuit from VDD to reach a high PSRR. The circuit was designed and simulated in 0.35um BCD technology. The results show the output voltage variation versus temperature (-50°C -100°C) is 8.8 ppm/°C, bandgap reference voltage is 1.236V, current consumption is 30.3 µA. Noise is 53.54 µV/Hz-1/2 at 1Hz. PSRR is -91dB at low frequency, -90.3dB at 1 kHz and -30.3dB at 1MHz. thus, the circuit maintains a good performance in PSRR through a broad frequency.

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What this paper is about

Based on pre-regulated voltage structure, a voltage bandgap reference with high power supply rejection ratio (PSRR) is presented in this paper. A pre-regulated voltage structure is used in the circuit to achieve isolating the supply voltage of the bandgap core circuit from VDD to reach a high PSRR. The circuit was designed and simulated in 0.35um BCD technology. The results show the output voltage variation versus temperature (-50°C -100°C) is 8.8 ppm/°C, bandgap reference voltage is 1.236V, current consumption is 30.3 µA. Noise is 53.54 µV/Hz-1/2 at 1Hz. PSRR is -91dB at low frequency, -90.3dB at 1 kHz and -30.3dB at 1MHz. thus, the circuit maintains a good performance in PSRR through a broad frequency.

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Available abstract

Based on pre-regulated voltage structure, a voltage bandgap reference with high power supply rejection ratio (PSRR) is presented in this paper. A pre-regulated voltage structure is used in the circuit to achieve isolating the supply voltage of the bandgap core circuit from VDD to reach a high PSRR. The circuit was designed and simulated in 0.35um BCD technology. The results show the output voltage variation versus temperature (-50°C -100°C) is 8.8 ppm/°C, bandgap reference voltage is 1.236V, current consumption is 30.3 µA. Noise is 53.54 µV/Hz-1/2 at 1Hz. PSRR is -91dB at low frequency, -90.3dB at 1 kHz and -30.3dB at 1MHz. thus, the circuit maintains a good performance in PSRR through a broad frequency.

Key concepts: Power supply rejection ratio, Bandgap voltage reference, Voltage, Electrical engineering, Materials science, Voltage reference, Electronic engineering, Optoelectronics

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