ICL422-1 4-phase vrd/pol inductor specifications subject to change without notice. (07/11) ICL422-1-1 electrical specifications at 25?c unless noted otherwise. features design for use with ikors proprietary coupled inductor multi-phase dc-dc converter topology ? low height and small size allows use in both imbedded (vrd) and module (vrm) applications ? integrated design lowers cost and simplifies assembly ? suitable for high temperature rohs reflow processes ? applications vrds (imbedded) ? vrms (module) ? pols ? vrm 10.x / vrm11 based designs ? ddr2/3 memory ? the ICL422-1, a 4-phase inductor assembly using ikors coupled inductor technology, solves the most pressing problem facing ia-32 vrds. this patented technology solves the trade-off between efficiency and elimination of bulk capacitors by dramatically lowering the vrm output inductance while using industry-standard components and relatively low switching frequencies. this technology provides superior transient response performance to higher frequency solutions due to the unique method of coupling between phases, and enables high-current designs with little or no electrolytic output bypass capacitance. the ICL422-1 4-phase coupled inductor assembly is designed for vrd applications. its integrated design allows it to fit the inductors very close to the cpu socket in vrd applications. this device can also be used in high cur - rent system vrm (svrm) applications where small size, high efficiency, and low total bom cost is critical. single inductor electrical specifcations parameter test conditions min typ max unit l s 1.0 vrms @ 500 khz 124 146 168 nh ll 1.0 vrms @ 500 khz 162 180 198 nh inductor assembly electrical specifcations parameter test conditions min typ max unit l s (1-3) 1.0 vrms @ 500 khz 248 310 372 nh l s (2-5) 1.0 vrms @ 500 khz 248 310 372 nh l s (4-7) 1.0 vrms @ 500 khz 248 310 372 nh l s (6-8) 1.0 vrms @ 500 khz 248 310 372 nh dcr (1-3) 25 c .387 .43 .473 m dcr (2-5) 25 c .477 .53 .583 m dcr (4-7) 25 c .477 .53 .583 m dcr (6-8) 25 c .387 .43 .473 m
800.729.2099 tel www.icecomponents.com (07/11) ICL422-1-2 specifcations subject to change without notice. vrd/pol inductor icl451-1 ICL422-1 vrd/pol inductor ? front view top view side view schematic layout application schematic ? 5 . 0 8 8 . 8 9 2 1 . 5 9 1 8 d i a 1 . 3 ( x 8 ) 8 . 7 m a x 4 . 0 + / - 0 . 2 5 5 0 . 8 + / - 0 . 2 5 4 1 0 . 2 + / - 0 . 2 5 4 t o p v i e w i k o r i ce i c l 4 5 1 - 1 h y y w w f o o t p r i n t 1 2 3 4 5 6 7 8 5 . 0 8 ( x 4 ) 7 . 6 2 ( x 3 ) units: mm units: mm the technology utilized in conjunction with the coupled inductor (the cl) described in this data sheet includes intellectual property (the ip) owned by iwatt, inc. and is covered by one or more of the following u.s. patents: 6,545,450; 6,686,727; 6,696,823. in con - nection with the end customers purchase of the cl from ice components, inc., the end customer is hereby granted a non-exclusive, worldwide, royalty-free license (without rights to sublicense) to use and incorporate the ip in the end customers product that also incorporates the cl. in no way does this license extend to customer end products which do not incorporate the cl to implement the ip. inductor assembly single inductor 0 . 2 5 m i n 6 . 8 t y p . 3 . 0 + / - 0 . 2 5 s ch e m a t i c 4 2 1 3 5 7 6 8 phase 1 1 phase 2 4 phase 3 5 phase 4 8 single inductor 3 2 7 6 vout
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