Power chipsets save heat and space for servers

International Rectifier has three DC/DC power management chipsets optimised to power Intel's new ultra-low-voltage Pentium III processor in ultradense servers.

International Rectifier has three DC/DC power management chipsets optimised to power Intel's new ultra-low-voltage Pentium III processor for the emerging category of low-power, space-saving ultradense servers.

The chipsets provide up to 2% higher efficiency compared to the nearest competitive solution at the 1.1V required by Intel's new processors IR's three power management chipsets are based on its cost-effective IRU3013 power management IC.

This IC integrates a 5bit programmable synchronous buck converter controller with triple LDO controllers and is compatible with Intel VRM 8.5 specification recommended for the new ultra low voltage processor.

The IRU3013 IC combines with IR's optimised 30 or 20V HEXFET power mosfets to provide the best performance while matching the customer's budget.

The first chipset combines the IRU3013 controller IC with compact SO-8, 30V, IRF7811W mosfet as the control FET and SO-8, 30V IRF7822 mosfet as the synchronous FET for the 13 to 15A current range.

This chipset provides peak efficiencies of up to 91% at 1.1VOUT and 300kHz, or 2% higher efficiency than nearest competitive solutions.

The alternative for the 13 to 15A current range is to combine the IRU3013 IC with the D-Pak, 20V, IRLR3715 mosfet as the control FET and the D-Pak, 20V, IRFR3704 mosfet as the synchronous FET.

The 20V, IRFR3704 and IRLR3715 HEXFET mosfets are manufactured using IR's rugged stripe planar technology, and are designed to replace more expensive 30V devices in 12V input buck converters for applications where cost is more important than performance.

Finally, IR offers a high efficiency, cost effective chipset for the 8 to 10A, low-current range that consists of the IRU3013 IC combined with the SO-8, 20V, IRF7456 synchronous mosfet and the SO-8, 20V, IRF7459 control mosfet.

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