Current Mode Converter

1. Current Mode Converter Shen-Yaur Chen

2. Limited value of error voltage provides peak current protection • No Soft-start mechanism is required • Modules share a common error voltage • Peak Current in each is kept the same

5. Limited value of error voltage provides peak current protection • No Soft-start mechanism is required • Modules share a common error voltage • Peak Current in each is kept the same

8. Average Model • R. D. Middlebrook, “Topics in Multiple-Loop Regulations and Current-Mode Programming,” in proc. IEEE Power Electron. Spec. Conf., Rec., 1985, pp. 716-732.

12. Complete Small Signal Model

13. Exact Average • G. C. Verghese, C. A. Bruzos, and K. N. Mahabir, “Averaged and Sampled-Data Models for PCM Control: A Reexamination,” in proc. IEEE Power Electron. Spec. Conf., Rec., 1989, pp. 3-13.

16. Ridley’s Model • R. B. Ridley, A New small-signal Model for Current-Mode Control, Ridley Engineering, Inc.,July 1999.

23. Modulation Gain

24. Sampling Gain

42. Buck Converter

43. Buck Converter