TY - GEN
T1 - A low dropout voltage regulator with programmable output
AU - Wu, Ying Cheng
AU - Huang, Chun Yueh
AU - Liu, Bin Da
PY - 2009
Y1 - 2009
N2 - In this paper, we present a low dropout voltage regulator (LDO) which can be programmed to generate four output voltages (3.3 V, 2.5 V, 1.8 V, and 0 V) by the external control signals. Between the error amplifier and the power transistor, we place a simple buffer so that the power supply rejection (PSR) of LDO can be improved. The design specification of the maximum load current is 100mA. The proposed LDO is designed by the 0.35μm CMOS 2P4M process technology and simulated by HSPICE. Simulation results show that the maximum transient-output variation (overshoot voltage) is about 50 mV with full-load step change of 100 mA and the PSR is larger than 60dB for different output voltages. Therefore, the proposed LDO can be applied for power management systems in system-on-chip (SOC), where the output voltage can be changed by control logic to optimize the power consumption of supplied device.
AB - In this paper, we present a low dropout voltage regulator (LDO) which can be programmed to generate four output voltages (3.3 V, 2.5 V, 1.8 V, and 0 V) by the external control signals. Between the error amplifier and the power transistor, we place a simple buffer so that the power supply rejection (PSR) of LDO can be improved. The design specification of the maximum load current is 100mA. The proposed LDO is designed by the 0.35μm CMOS 2P4M process technology and simulated by HSPICE. Simulation results show that the maximum transient-output variation (overshoot voltage) is about 50 mV with full-load step change of 100 mA and the PSR is larger than 60dB for different output voltages. Therefore, the proposed LDO can be applied for power management systems in system-on-chip (SOC), where the output voltage can be changed by control logic to optimize the power consumption of supplied device.
UR - http://www.scopus.com/inward/record.url?scp=70349308716&partnerID=8YFLogxK
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U2 - 10.1109/ICIEA.2009.5138825
DO - 10.1109/ICIEA.2009.5138825
M3 - Conference contribution
AN - SCOPUS:70349308716
SN - 9781424428007
T3 - 2009 4th IEEE Conference on Industrial Electronics and Applications, ICIEA 2009
SP - 3357
EP - 3361
BT - 2009 4th IEEE Conference on Industrial Electronics and Applications, ICIEA 2009
T2 - 2009 4th IEEE Conference on Industrial Electronics and Applications, ICIEA 2009
Y2 - 25 May 2009 through 27 May 2009
ER -