Datasheet

ISL6160
InfiniBand +12V Bulk and +5V Auxiliary Power Controller

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Typical Diagram

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Key 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

Description

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.