Transient Current Compensation For Low-Voltage High-Current Voltage Regulator Modules
The maximum current slew rate of Pentinm 4 microprocessor is 510A/us and it will reach more than IA/ns for future generations. However, voltage regulator module (VRM) is always too slow (50A/us) to react and results in output voltage spikes. The existing of large socket inductance between motherboard and microprocessor package generates large voltage spike under load-change transient due to its current response delay. A new active transient current compensation is presented to limit voltage spike within 1.5% variation in loadchange transient when microprocessor operates at 1V, 100A and 2A/ns of current slew rate with the package capacitance decreasing to less than one-half of Pentium 4 level. Therefore, the total voltage variation is limited within 3%.
Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Number of Pages
Article; Proceedings Paper
Source API URL
Luo, Jia; Batarseh, Issa; and Gao, X. F., "Transient Current Compensation For Low-Voltage High-Current Voltage Regulator Modules" (2002). Scopus Export 2000s. 3006.