ICL701-4 VRD/POL Inductor Features Applications • Designed for use with IKOR’s proprietary coupled inductor multi-phase DC-DC converter topology • Low height and small size allows use in both imbedded (VRD) and module (VRM) applications • Robust SMD package is compatible with SMT assembly process handling • VRDs (Imbedded) • VRMs (Module) • POLs • VRM 10.x / VRM11 based designs. • DDR2/3 memory The ICL701-4 using IKOR’s coupled inductor technology solves the most pressing problem facing IA-32 VRDs and VRMs. This patented technology solves the trade-off between efficiencyand 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 ICL701-4 coupled inductor can be used in both VRD and module VRM applications. Its small size and low height make it possible to design high-density VRMs and to fit the inductors very close to the CPU socket in VRD applications. This device can also be used in highcurrent System VRM (SVRM) applications where small size, high efficiency, and low total BOM cost is critical. Electrical Specifications Parameter Test Conditions Min Typ Max Turns Radio (1 - 2) : (4 - 3) 1Vrms @100 kHz Ls (1-2) 0.1Vrms @ 500 kHz 525 675 825 nH Ls (4-3) 0.1Vrms @ 500 kHz 525 675 825 nH LL (1-2) short 4+3, 1.0 Vrms @ 1 MHz DCR (each winding) 25˚C 1:1 - 140 0.27 0.30 Unit nH 0.33 mΩ 1. This is RoHS Compliant product. 2. The nominal DCR is measured from point (a) to point (b), as shown on the mechanical drawing. 3. Operating temperature range: 0°C to 100°C. 4. Isat is the current at which the inductance drops by 25% max. 5. Meets UL 94V-0. Specifications subject to change without notice. 800.729.2099 tel www.icecomponents.com 34 (03/08) ICL701-4-1 ICL701-4 VRD/POL Inductor • Front View Schematic 14.8 MAX 12.5 MAX 1 4 2 3 4.8 MAX 1.8 +/-0.1 8.0 units: mm Top View Side View 12.5 MAX 4 1 IKOR ice ICL701-4 YYWW 2 0.1 MAX for coplanarity 3 (a) (b) 2.0 +/- 0.25 units: mm Layout Inductance vs. Current 4 120.0 2.6 12.5 3.0 2 3 Inductance % (1-2) 1 100.0 80.0 60.0 40.0 20.0 0.0 0A 10.6 1A 2A 3A 4A 5A 6A 7A DC Current (3-4) 8A 9A 10A Magnetizing inductance (1-2) vs. DC current applied (3-4) 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 connection with the end customer’s 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 customer’s 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. Specifications subject to change without notice. 800.729.2099 tel www.icecomponents.com 35 (03/08) ICL701-4-2