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A Chip-Area Efficient Voltage Regulator for VLSI Systems

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3 Author(s)
Ka Nang Leung ; Dept. of Electron. & Comput. Eng., Hong Kong Univ. of Sci. & Technol., Kowloon, China ; Yuan Yen Mai ; Mok, P.K.T.

This paper presents an error amplifier structure to improve load regulation of low-voltage low-dropout regulators. The proposed error amplifier has ultrawide swing to extend the high-gain region so that the size of power transistor can be reduced. Experimental results show that the required power transistor size is reduced by 25% to achieve similar performance in load regulation. Moreover, extra power consumption and increase of silicon area are not significant.

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Very Large Scale Integration (VLSI) Systems, IEEE Transactions on  (Volume:18 ,  Issue: 12 )