ICL501-1
vRD/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 ICL 501-1 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 ICL501-1 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 Radio (1 - 2) : (4 - 3)
L
s
(1-2)
L
s
(4-3)
LL (1-2)
DCR (each winding)
100mV @ 500 kHz rms
100mV @ 500 kHz rms
short 4+3, 1.0 Vrms @ 1 MHz
350
350
45
500
500
Test Conditions
Min
Typ
Max
1:1
650
650
60
0.3
Unit
-
nH
nH
nH
m
Ω
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
22
(03/08) ICL501-1-1
ICL501-1
vRD/POL Inductor
•
Front view
Dot for pin 1
Schematic
IKOR
ICL501-1
YYWW
7.5 MAX
1
4
1.6 +/- 0.25 0.1 max
for coplanarity
10 +/- 0.25
2
3
units: mm
Top view
9.8 MAX
Side view
4
3
2
11.0 MAX
1
1.5 +/- 0.1
5.3 +/- 0.3
units: mm
Layout
Inductance vs. Current
3.3
2.0
4
1
5.0
3
Inductance % (1-2)
120.0
100.0
80.0
60.0
40.0
20.0
0.0
0A
1A
2A
3A
4A
5A
6A
7A
8A
9A
10A
2
1.6
TOP VIEW
DC Current (3-4)
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.
23
(03/08) ICL501-1-2
Specifications subject to change without notice.
800.729.2099 tel
www.icecomponents.com
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