ICL813-1 VRM/POL Inductor Features Applications •Designed for use with IDT’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 ICL813-1 using IDT’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 ICL813-1 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 high-current System VRM (SVRM) applications where small size, high efficiency, and low total BOM cost is critical. Electrical Specifications Parameter Test Conditions Turns Ratio (1 - 2) : (4 - 3) 1Vrms @ 10kHz Ls (1-2) Ls (4-3) 100mV @ 100 kHz 650 100mV @ 100 kHz 650 LL (1-2) short 4+3, 1.0 Vrms @1 MHz 209 DCR (each winding) Min Typ Max Unit 1:1 - 813 976 nH 813 976 nH 313 nH 0.306 0.340 0.374 mΩ 1. Electrical specifications at 25˚C unless noted otherwise. 2. DC current, PCB layout, trace thickness and width, airflow, and proximity to other devices will affect inductor temerature rise. 3. Operating temperature range: 0°C to 100°C. 4. Meets UL 94V-0. Specifications subject to change without notice. 800.729.2099 tel www.icecomponents.com (11/11) ICL813-1-1 ICL813-1 VRM/POL Inductor • Front View • units: mm Schematic Top View IDT ice • units: mm Inductance vs. Current Layout Inductance % (1-2) 120.00 100.00 80.00 60.00 40.00 20.00 0.00 0A 1A 2A 3A 4A 5A 6A 7A 8A 9A 10A DC Current (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 IDT, 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 (11/11) ICL813-1-2