ICL813-1
VRM/POL Inductor
Features
• 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
Applications
• VRDs (Imbedded)
• VRMs (Module)
• POLs
• VRM 10.x / VRM11
based designs.
• DDR2/3 memory
The ICL813-1 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 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
Turns Ratio (1 - 2) : (4 - 3)
Ls
(1-2)
Ls
(4-3)
LL
(1-2)
DCR (each winding)
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.
Test Conditions
1Vrms @ 10kHz
100mV @ 100 kHz
100mV @ 100 kHz
short 4+3, 1.0 Vrms @ 1 MHz
Min
650
650
209
Typ
813
813
Max
1:1
976
976
313
Unit
-
nH
nH
nH
mΩ
0.306 0.340
0.374
Specifications subject to change without notice.
800.729.2099 tel
www.icecomponents.com
(12/09) ICL813-1-1
ICE [ ICE COMPONENTS, INS. ]
