快速反應之低壓降線性穩壓器-使用電壓偵測模式之自適應參考控制電路

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

林天安(Tien-An Lin)

指導教授 ： 江正雄

共同指導教授 ： 余繁

淡江大學/工學院/電機工程學系碩士在職專班/碩士(2012年)

https://doi.org/10.6846/TKU.2012.00313

摘要

隨著可攜式電子產品的發展與盛行，低功率高效率成為可移動式電子產品的首要考量，因此利用電池提供電源的電子電路必須工作在低電壓低電流以降低能量消耗，使得電池可以長時間的工作。此外，在製程技術不斷進步的同時，由於可靠度的考量，其工作電壓也必須隨著製程進步而降低，為了節省功率的消秏，穩壓器常被用來降低工作電壓。
本論文之內容為設計及實現一個具有快速暫態響應之低壓差線性穩壓器，利用電壓偵測模式實現一個自適應參考控制電路，改善低壓降線性穩壓器的暫態響應,透過電壓偵測暫態時的輸出電壓與穩態電壓的變化，藉由自適應參考控制電路調整帶差能隙參考電壓來微調輸出電壓，加快鎖定時間使額定電壓穩定輸出，透過前/後模擬可以看出改善的部份，的確可以避免因鎖定電壓時間過久所造成不必要的功耗。此電壓偵測電路及ARC控制電路將透過CIC，使用台灣積體電路的CMOS 0.35um 2P4M 3.3V/5V mixed-mode製程投片驗證，此佈局面積約為1.2143 mm * 0.93465mm，工作電壓範圍為3.1V至5V固定輸出3 V，設計最大輸出電流為100mA。

關鍵字

電壓偵測模式 ； 快速反應 ； 低壓降線性穩壓器

並列摘要

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.

並列關鍵字

Voltage detection mode ； fast transient response LDO ； Adaptive Reference control

參考文獻

[14] 沈宗模，應用於動態多電壓調整之高效能低壓降線性穩壓器，碩士論文，淡江大學電機工程研究所。.

[1] Hoi Lee, Philip K. T. Mok, and Ka Nang Leung, “Design of low-power analog drivers based on slew-rate enhancement circuits for CMOS low-dropout regulators ”, IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS—II: EXPRESS BRIEFS, VOL. 52, NO. 9, SEPTEMBER 2005

[2] Jeongjin Roh, “High-Performance Error Amplifier for Fast Transient DC–DC ConvertersPower Supply Cookbook”, IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS—II: EXPRESS BRIEFS, VOL. 52, NO. 9, SEPTEMBER 2005

, “On-Chip Compensated Error Amplifier for Fast Transient DC-DC Converter” , IEEE International Conference on Electro/information Technology, May 2006.

[4] Yao, K.; Lee, K.; Xu, M.; Lee, F.C., “Optimal design of the active droop control method for the transient response”, Applied Power Electronics Conference and Exposition, 2003. APEC '03. Eighteenth Annual IEEE, Feb 2003.