Coreless planar Printed-Circuit-Board (PCB) transformers - A fundamental concept for signal and energy transfer

IEEE Transactions on Power Electronics

Volumn 15, Issue 5, 2000, Pages 931-941

  Tang, S C ^a,b   Hui, S Y ^a,b   Chung, Henry Shu Hung ^a,b  

^a IEEE   (Hong Kong)

^b CITY UNIVERSITY OF HONG KONG   (Hong Kong)

Author keywords

Coreless printed circuit board transformer; High frequency magnetics; Microcircuits; Passive components; Power conversion

Indexed keywords

ELECTRIC LOSSES; EQUIVALENT CIRCUITS; MAGNETIC CORES; POWER CONVERTERS; PRINTED CIRCUIT BOARDS;

CORELESS PLANAR PRINTED CIRCUIT BOARD TRANSFORMERS; HIGH FREQUENCY MAGNETICS; MICROCIRCUITS;

ELECTRIC TRANSFORMERS;

EID: 0034272060     PISSN: 08858993     EISSN: None     Source Type: Journal    
DOI: 10.1109/63.867683     Document Type: Article

References (14)

1. S. Hayano, Y. Nakajima, H. Saotome, and Y. Saito, "A new type high frequency transformer," IEEE Trans. Magn., vol. 27, pp. 5205-5207, Nov. 1991.
2. W. Roshen, "Effect of finite thickness of magnetic substrate on planar inductors," IEEE Trans. Magn., vol. 26, no. 1, pp. 270-275, January 1990.
3. K. Yamaguchi, S. Ohnuma, T. Imagawa, J. Toriu, H. Matsuki, and K. Murakami, "Characteristic of athin-film microtransformer with circular spiral coils," IEEE Trans. Magn., vol. 29, pp. 2232-2237, Sept. 1993.
4. M. Mino, T. Yachi, A. Tago, K. Yanagisawa, and K. Sakakibara, "A new planar microtransformer for use in micro-switching converters," IEEE Trans. Magn., vol. 28, pp. 1969-1973, July 1992.
5. C. H. Ahn and M. G. Allen, "Micromachined planar inductors on silicon wafers for MEMS applications," IEEE Trans. Ind. Electron., vol. 45, pp. 866-875, Dec. 1998.
6. C. R. Sullivan and S. R. Sanders, "Design of microfabricated transformers and inductors for high-frequency power conversion," IEEE Trans. Power Electron., vol. 11, no. 2, pp. 228-238, 1996.
7. _, "Measured performance of a high-power-density microfabricated transformer in a DC-DC converter," in IEEE Technology Update Series: Power Electronics and Applications II. New York: IEEE Press, 1997, pp. 104-111.
8. Balakrishnan, W. D. Palmer, W. Joines, and T. G. Wilson, "The inductance of planar structures," in Proc. IEEE Power Electron. Specialists Conf., 1993, pp. 912-921.
9. W. G. Hurley, M. C. Duffy, S. O'Reilly, and S. C. O'Mathuna, "Impedance formulas for planar magnetic structures with spiral windings," in Proc. IEEE PESC, 1997, pp. 627-633.
10. I. Marinova, Y. Midorrikawa, S. Hayano, and Y. Saito, "Thin film transformer and its analysis by integral equation method," IEEE Trans. Magn., vol. 31, pp. 2432-2437, July 1995.
11. S. Y. R. Hui, S. C. Tang, and H. Chung, "Coreless printed-circuit-board (PCB) transformers for signal and energy transfer," IEE Electronics Lett., vol. 34, pp. 1052-1054, Nov. 1998.
12. _, "Coreless PCB-based transformers for power MOSFET/IGBT gate drive circuits," IEEE Trans. Power Electron., vol. 14, pp. 422-430, May 1999.
13. _, "Coreless printed circuit board (PCB) transformers with multiple secondary windings for complementary gate drive circuits," IEEE Trans. Power Electron., vol. 14, pp. 431-137, May 1999.
14. _, "Optimal operation of coreless PCB transformer-isolated gate drive circuits with wide switching frequency range," IEEE Trans. Power Electron., vol. 14, pp. 506-514, May 1999.