Improvement of transient response in high-current output DC-DC converters

Concerning a low-voltage and high-current output DC-DC converter such as a voltage regulator module used for a 64-bit microprocessor, synchronization with paralleled current-doubler rectifiers has been considered for improvement in dynamic response. As a result, the output voltage deviation of 50 mV at a slew rate of 300 A//spl mu/s has been performed on a prototype with an output of 1.3 V/130 A.

[1]  R. Miftakhutdinov,et al.  Analysis and optimization of synchronous buck converter at high slew-rate load current transients , 2000, 2000 IEEE 31st Annual Power Electronics Specialists Conference. Conference Proceedings (Cat. No.00CH37018).

[2]  F. C. Lee,et al.  A family of novel interleaved DC/DC converters for low-voltage high-current voltage regulator module applications , 2001, 2001 IEEE 32nd Annual Power Electronics Specialists Conference (IEEE Cat. No.01CH37230).

[3]  R. Redl,et al.  Optimizing the load transient response of the buck converter , 1998, APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition.

[4]  P. Alou,et al.  A high efficiency voltage regulator module with single winding self-driven synchronous rectification , 2000, 2000 IEEE 31st Annual Power Electronics Specialists Conference. Conference Proceedings (Cat. No.00CH37018).

[5]  Milan M. Jovanovic,et al.  Design and performance evaluation of low-voltage/high-current DC/DC on-board modules , 1999, APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285).