1

®

FN9028.1

ISL6160

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.

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

•0.125

Ω 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

•1

µs 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

Ordering Information

PART NUMBER

TEMP. RANGE

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.

FIGURE 1. TYPICAL APPLICATION USAGE

+

VB(ulk)

DC-DC EN

VA_FLTn

VA_ENn

VB_ON

VA_IN

VA_Out

ISET

ISEN

GATE

VB_IN

VB_Ret

+ VA(ux)

(OPT.)

VA_Ret

LOCAL PWR EN

VBxEN_L

VB SECONDARY RAIL TO DC-DC

TO DC-DC

CTIM

(OPT.)

GATE

VB_Ret

VB_IN

CTIM

DC-DC ENABLE

ISET

VA_FLTn

1

2

3

4

5

6

7

14

13

12

11

10

9

8

ISEN

VA_OUT

VA_ENn

VA_IN

NC

VA_Ret

VB_ON

Data Sheet

July 2004

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143

Copyright © Intersil Americas Inc. 2001, 2004. All Rights Reserved

All other trademarks mentioned are the property of their respective owners.