A Fast Response of the Low-Dropout Linear Regulator with the Voltage Detection Mode of the Adaptive Reference Control Circuit

• Main Authors: Tien-An Lin, 林天安
• Other Authors: 江正雄
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/45588404728933214167

碩士 === 淡江大學 === 電機工程學系碩士在職專班 === 100 === The fast growing demand of portable and battery-operated electronic systems has driven the efforts to reduce power consumption or to improve the efficiency of these electronic equipments. Regulator are essential for most electrically powered systems which include the prevalent portable equipments. Regulators are required to reduce the voltage variations of the battery. Besides, regulation are often utilized to provide a lower voltage from a higher input voltage for power reduction. Current trend in portable or battery-powered electronics demands ultra-low-power consumption or high operating efficiency to prolong the service time of these battery-operated equipments. This thesis deals with the design and realization of a low-dropout linear regulator with a fast transient response. It applies voltage detection mode to realize an adaptive reference control circuit for improving the transient response of the linear regulator. The voltage detection circuit and the adaptive reference control circuit is implemented by using a CMOS 0.35 um 2P4M 3.3V5V mixed-mode chip of Taiwan Semiconductor (TSMC). Its layout area is about 1.2143mm x 0.93465mm. Its operating voltage ranges from 3.1V to 5V with fixed output of 3.0V and its maximum output current of the design is 100mA.