Title :
Supply noise insensitive bandgap regulator using capacitive charge pump DC-DC converter
Author :
Lee, Chang-Hyeon ; McCellan, K. ; Choma, John, Jr.
Author_Institution :
Dept. of Electr. Eng.-Electrophys., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
This paper presents a supply noise insensitive bandgap regulator using a capacitive charge pump DC-DC converter (BRCC) with -50 dB power supply noise rejection (PSNR) in a 0.35 μm CMOS process. This proposed BRCC promises to reduce temperature sensitivities and suppress low/high frequency power supply noise using stacked cascoded N-type output transistors. In particular, since the operational amplifiers inside BRCC for a solid BRCC regulation receive a supply voltage from the pre-regulated output, they are immune to supply changes on the main power line. This allows the BRCC to have a very high degree of regulation and a high PSNR
Keywords :
CMOS analogue integrated circuits; DC-DC power convertors; voltage regulators; 0.35 micron; CMOS process; PSNR; capacitive charge pump DC-DC converter; operational amplifiers; power supply noise; power supply noise rejection; stacked cascoded N-type output transistors; supply noise insensitive bandgap regulator; temperature sensitivities; CMOS process; Charge pumps; DC-DC power converters; Frequency; Noise reduction; PSNR; Photonic band gap; Power supplies; Regulators; Temperature sensors;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.780102
