Intersil Intros ISL6530CB-T/ISL6531CB-T PWM ICs

Intersil Corp. (Irvine, CA) introduced its latest dual-pulse-width modulation (PWM) regulator ICs that are able to power DDR SDRAM on computer motherboards and systems, according to the company. The new Endura ICs, the ISL6530 and ISL6531, are intended for use in server and workstation applications.

The ICs provide three regulated voltage sources: a VDDQ chip voltage that provides the main power to the memory, a Vref low-power reference source that tracks the middle point of VDDQ, and a VTT voltage source that powers parallel termination resistors and also tracks the middle point of the VDDQ voltage. Both devices use a cascaded approach where the DDR memory line termination voltage, VTT, is created from the DDR memory voltage, VDDQ.

Both ICs are sampling now. The cost per device on tape-and-reel is $2.35 for the ISL6530CB-T and $2.40 for the ISL6531CB-T in quantities of 100.