Bidirectional current-mode capacitor multipliers for on-chip compensation

被引:61
作者
Chen, Ke-Horng [1 ]
Chang, Chia-Jung [1 ]
Liu, Te-Hsien [1 ,2 ]
机构
[1] Natl Chiao Tung Univ, Dept Elect & Control Engn, Hsinchu 30010, Taiwan
[2] Novatek Corp, Hsinchu, Taiwan
关键词
capacitor multiplier; compensator; current mode; dc-dc converter; on-chip compensation;
D O I
10.1109/TPEL.2007.911776
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Single-ended and two-ended bidirectional capacitor multipliers for providing on-chip compensation, soft-start, and fast transient mechanisms are proposed in this paper. The bidirectional current mode capacitor multiplier technique can effectively move the crossover frequency toward to the origin in the start-up period for a smoothly rising of the output voltage. Besides, the small time constant is set by the fast transient control circuit in order to get a higher crossover frequency. Thus, the output voltage can be regulated to its stable value as fast as it can when large load current changes. A test chip fabricated by the Taiwan Semiconductor Manufacturing Corporation (TSMC) 0.35-mu m process verifies the correctness of the bidirectional current mode capacitor multiplier technique. Experimental results demonstrate the transient speed by our proposed technique is faster than that by conventional. control by about 2 times, and there is only about 76% dropout voltage of the conventional design with off-chip compensation. The proposed circuits consume more quiescent current about 10 mu A in single-ended capacitor multiplier and 20 mu A in two-ended capacitor multiplier. With the proposed bidirectional current mode capacitor multiplier technique, the performance of dc-dc converters is improved significantly and the external pins and footprint area are minimized.
引用
收藏
页码:180 / 188
页数:9
相关论文
共 17 条
[1]  
Chang CJ, 2005, Fifth International Workshop on System-on-Chip for Real-Time Applications, Proceedings, P111
[2]  
Erickson R. W., 2007, Fundamentals of power electronics
[3]   Dithering skip modulator with a width controller for ultra-wride-load high-efficiency DC-DC converters [J].
Huang, Hong-Wei ;
Ho, Hsin-Hsin ;
Chien, Chieh-Ching ;
Chen, Ke-Horng ;
Ma, Gin-Kou ;
Kuo, Sy-Yen .
PROCEEDINGS OF THE IEEE 2006 CUSTOM INTEGRATED CIRCUITS CONFERENCE, 2006, :643-646
[4]   Adaptive frequency control technique for enhancing transient performance of DC-DC converters [J].
Huang, Hong-Wei ;
Hsieh, Chun-Yu ;
Chen, Ke-Horng ;
Kuo, Sy-Yen .
ESSCIRC 2007: PROCEEDINGS OF THE 33RD EUROPEAN SOLID-STATE CIRCUITS CONFERENCE, 2007, :174-+
[5]  
Huang HW, 2006, PROC EUR SOLID-STATE, P324
[6]  
Huang HW, 2006, INT CONF ELECTRO INF, P103
[7]   A monolithic current-mode CMOS DC-DC converter with on-chip current-sensing technique [J].
Lee, CF ;
Mok, PKT .
IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2004, 39 (01) :3-14
[8]   Integrating power inductors onto the IC -: SOC implementation of inductor multipliers for DC-DC converters [J].
Makharia, A ;
Rincón-Mora, GA .
IECON'03: THE 29TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY, VOLS 1 - 3, PROCEEDINGS, 2003, :556-561
[9]  
Mohan N., 2003, Power electronics: converters, applications, and design, V3
[10]  
Palumbo G., 1998, P IEEE INT C EL CIRC, V2, P21