ISL6160 Datasheet, PDF (1/11 Pages) Intersil Corporation – InfiniBand +12V Bulk and +5V Auxiliary Power Controller

®
Data Sheet
July 2004
ISL6160
FN9028.1
InfiniBand +12V Bulk and +5V Auxiliary
Power Controller
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.
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.
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.
See Figure 1 for typical application usage.
Ordering Information
TEMP. RANGE
PART NUMBER
(^oC)
PACKAGE
PKG.
DWG. #
ISL6160CB
-40 to 85 14 Ld SOIC M14.15
ISL6160CBZA
(See Note)
-40 to 85
14 Ld SOIC
(Pb-free)
M14.15
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.
VB SECONDARY RAIL TO DC-DC
ISET
ISEN
GATE
DC-DC EN
VB_ON
CTIM
TO DC-DC
VBxEN_L
LOCAL PWR EN
(OPT.)
+
VB(ulk)
VB_IN
VB_Ret
VA_Ret
VA_FLTn
VA_ENn
VA_IN
VA_Out
(OPT.)
+ VA(ux)
FIGURE 1. TYPICAL APPLICATION USAGE
Features
• VB Programmable Overcurrent Protection Regulation
Level for 25W and 50W Ports
• 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
• 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
• 1µs Response Time to VB Secondary Rail Dead Short
• Pb-free available
Applications
• InfiniBand VB and VA Voltage Control
• -48V and 5V Telecom
Pinout
ISL6160
(14 LEAD SOIC)
TOP VIEW
ISET 1
ISEN 2
GATE 3
VB_Ret 4
VA_Ret 5
VA_IN 6
VA_ENn 7
14 VB_ON
13 DC-DC ENABLE
12 CTIM
11 _{VB_IN}
10 VA_FLTn
9 VA_OUT
8 _NC
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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