ISL6160
®
Data Sheet
July 2004
FN9028.1
InfiniBand +12V Bulk and +5V Auxiliary
Power Controller
Features
• VB Programmable Overcurrent Protection Regulation
Level for 25W and 50W Ports
The ISL6160 is designed to address the unique power
requirements of the InfiniBand (IB) industry initiative
providing independent power control of both the VB(bulk)
(+12V) and the VA(auxiliary) (+5V) power rails for a single
port. This device can be implemented in both IB Class I (non
isolated) and Class II (isolated) Power Topology applications.
• Internal Charge Pump Allows the Use of an N-Channel
MOSFET for VB Control
• VB Adjustable Turn-On Ramp
• Soft Start Overcurrent Protection During Turn-On
• Two Levels of VB Overcurrent Detection and Protection
• VA and VB Undervoltage Lock-Outs
The ISL6160, along with an N-Channel power MOSFET and
a minimal number of passive components provides soft
starting ramps of both the VB and VA voltages for an IB
module. It also provides accurate and consistent current
regulated outputs for a determined period of time before
latch-off in the presence of overcurrent (OC) conditions.
• 0.125Ω Integrated Power N-Channel MOSFET VA Switch
• Accurate VA Current Sensing and Limiting (1A)
• Timed Current Regulation Period (VB Optional)
• VA Controlled Turn-On Ramp Time
In addition the ISL6160 provides the enable signal to the on
module DC-DC converter either upon module insertion to
chassis or from a wake event request.
• 1µs Response Time to VB Secondary Rail Dead Short
• Pb-free available
See Figure 1 for typical application usage.
Applications
Ordering Information
• InfiniBand VB and VA Voltage Control
• -48V and 5V Telecom
TEMP. RANGE
PKG.
DWG. #
o
PART NUMBER
( C)
PACKAGE
ISL6160CB
-40 to 85
-40 to 85
14 Ld SOIC
M14.15
M14.15
ISL6160CBZA
(See Note)
14 Ld SOIC
(Pb-free)
Pinout
ISL6160
(14 LEAD SOIC)
TOP VIEW
ISL6160EVAL2
IB Class I Power Topology Evaluation Platform
*Add “-T” suffix to part number for tape and reel packaging.
NOTE: Intersil Pb-free products employ special Pb-free material sets; molding
compounds/die attach materials and 100% matte tin plate termination finish, which
is compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free
products are MSL classified at Pb-free peak reflow temperatures that meet or
exceed the Pb-free requirements of IPC/JEDEC J Std-020B.
1
2
3
4
5
6
7
14
VB_ON
ISET
ISEN
13 DC-DC ENABLE
12
GATE
CTIM
11
VB_Ret
VA_Ret
VB_IN
VB SECONDARY RAIL TO DC-DC
10
9
VA_FLTn
VA_OUT
NC
TO DC-DC
VBxEN_L
DC-DC EN
VA_IN
ISET
ISEN
VA_ENn
8
VB_ON
CTIM
LOCAL PWR EN
GATE
(OPT.)
VA_FLTn
VA_ENn
(OPT.)
VB_IN
VB_Ret
VA_Ret
+
VA(ux)
VA_IN
VA_Out
+
VB(ulk)
FIGURE 1. TYPICAL APPLICATION USAGE
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1
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