1. IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 28, NO. 11, NOVEMBER 2013 Yuanmao Ye and K. W. E. Cheng A Family of Single-Stage Switched-Capacitor–Inductor PWM Converters 1 Reporter: Yu-Kai Lin

2. Outline 2 1. Introduction 2. Configuration(New Family of SCI Converters) 3. Detailed Analysis and Design Considerations 4. Simulation and Experimental Results 5. Conclusion 6. Personal Remark

3. 1.Introduction(1/4) 3 A family of single-stage-switched-capacitor–inductor converters with different voltage conversion features and similar structures is presented in this paper. Unlike conventional switched-capacitor/switched- inductor converters that are produced by cascade operation, all of the proposed converters are operated in single-stage mode.

4. 1.Introduction(2/4 ) 4 The basic switched-mode dc–dc converters including (buck, boost, buck–boost, cuk, zeta, and sepic) have been used in various electronic applications due to their numerous advantages such as simple structure, good performance, high efficiency, easy design, and simple control circuit.

5. 1.Introduction(3/4 ) 5 A small resonant inductor has been added in SC converters to eliminate the current peak, therefore, the SC converters have good performance and high efficiency as well. Even though these converters have different structures and can provide different voltage conversion ratios, they have a characteristic in common which is that all of them are multistage combination of switched- inductor cells and SC cells

6. 1.Introduction(4/4 ) 6

7. 2.Configuration(1/8) 7 Fig. 2. New family of SCI converters. (a) Dual-input step-up converter. (b) Single-input step-up converter. (c) Dual-input step-down converter. (d) Single-input step-down converter. (e) Inverting step-up converter.

8. 2.Configuration(2/8) 8

9. 2.Configuration(3/8) 9

10. 2.Configuration(4/8) 10

11. 2.Configuration(5/8) 11

12. 2.Configuration(6/8) 12

13. 2.Configuration(7/8) 13 Fig. 3. Two new members of the proposed SCI converters family. (a) High step- down SCI converter. (b) Inverting step-down SCI converter. However, there is no member in Fig. 2 that can provide high step-down and inverting step-down output levels. To compensate for the two deficiencies, two new members are developed to expand the proposed family as shown in Fig. 3.

14. 2.Configuration(8/8) 14

15. 3.Analysis and Design(1/4) 15

16. 3.Analysis and Design(2/4) 16

17. 3.Analysis and Design(3/4) 17

18. 3.Analysis and Design(4/4) 18

19. 4.Simulation(1/5) 19

20. 4.Simulation(2/5) 20

21. 4.Simulation(3/5) 21 duty ratio is 0.5. (a) Simulated results. (b) Experimental results.

22. 4.Simulation(4/5) 22 V1 = 30 V, V2 = 20 V, d = 0.5, IO = 2.4 A

23. 4.Simulation(5/5) 23 (a) Efficiency versus output power. (b) Output voltage versus output power.

24. 5.Conclusion(1/2) 24 The proposed converters employ two energy transfer components (one SC and one inductor) and do not use the cascade method like conventional SC/switched-inductor converters. This design can meet the high efficiency requirement with a simple structure. The other members of the proposed family have also been simulated and their operations have been confirmed.

25. 5.Conclusion(2/2) 25 Fig. 2(b) is always higher than twice the input voltage and is only suitable for high voltage gain applications. Similar problem is also found in the high step-down member [see Fig. 3(a)]. proposed step-up converters can provide both higher and lower voltage levels than input voltage under different duty ratios.

26. 6.Personal Remark 26 In this paper the experimental circuit switch use IRFI540N,but simulated didn’t use this so the result will different. In this paper author propose seven’s different circuit, but only experiment one circuit.

27. 6.Personal Remark 27

28. 28 Thank your for listening