ISL6566CRZ-TR5184 Intersil, ISL6566CRZ-TR5184 Datasheet - Page 27
![IC CTRLR PWM 3PHASE BUCK 40-QFN](/photos/6/88/68851/40-qfn_pkg_sml.jpg)
ISL6566CRZ-TR5184
Manufacturer Part Number
ISL6566CRZ-TR5184
Description
IC CTRLR PWM 3PHASE BUCK 40-QFN
Manufacturer
Intersil
Datasheet
1.ISL6566CRZ-TR5184.pdf
(29 pages)
Specifications of ISL6566CRZ-TR5184
Applications
Controller, Intel VRM9, VRM10, and AMD Hammer Applications
Voltage - Input
3 ~ 12 V
Number Of Outputs
1
Voltage - Output
0.84 ~ 1.6 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
40-VFQFN, 40-VFQFPN
Rohs Compliant
YES
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ISL6566CRZ-TR5184
ISL6566CRZ-TR5184TR
ISL6566CRZ-TR5184TR
ISL6566
Thermal Management
For maximum thermal performance in high current, high
switching frequency applications, connecting the thermal
GND pad of the ISL6566 to the ground plane with multiple
vias is recommended. This heat spreading allows the part to
achieve its full thermal potential. It is also recommended
that the controller be placed in a direct path of airflow if
possible to help thermally manage the part.
Suppressing MOSFET Gate Leakage
With VCC at ground potential, UGATE is high impedance. In
this state, any stray leakage has the potential to deliver
charge to the gate of the upper MOSFET. If UGATE receives
sufficient charge to bias the device on, a low impedance path
will be connected between the upper MOSFET drain and
PHASE. If this occurs and the input power supply is present
and active, the system could see potentially damaging
current. Worst-case leakage currents are on the order of
pico-amps; therefore, a 10kΩ resistor, connected from
UGATE to PHASE, is more than sufficient to bleed off any
stray leakage current. This resistor will not affect the normal
performance of the driver or reduce its efficiency.
27
FN9178.4
March 9, 2006