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ISL6142

Intersil Corporation
Part Number ISL6142
Manufacturer Intersil Corporation
Description Negative Voltage Hot Plug Controller
Published Apr 7, 2005
Detailed Description ISL6142, ISL6152 ® Data Sheet Negative Voltage Hot Plug Controller The ISL6142/52 are 14 pin, negative voltage hot plu...
Datasheet PDF File ISL6142 PDF File

ISL6142
ISL6142

Overview
ISL6142, ISL6152 ® Data Sheet Negative Voltage Hot Plug Controller The ISL6142/52 are 14 pin, negative voltage hot plug controllers that allow a board to be safely inserted and removed from a live backplane.
Inrush current is limited to a programmable value by controlling the gate voltage of an external N-channel pass transistor.
The pass transistor is turned off if the input voltage is less than the Under-Voltage threshold, or greater than the OverVoltage threshold.
The PWRGD/PWRGD outputs can be used to directly enable a power module.
When the Gate and DRAIN voltages are both considered good the output is latched in the active state.
The IntelliTripTM electronic circuit breaker and programmable current limit features protect the system against short circuits.
When the Over-Current threshold is exceeded, the output current is limited for a time-out period before the circuit breaker trips and shuts down the FET.
The time-out period is programmable with an external capacitor connected to the CT pin.
If the fault disappears before the programmed time-out, normal operation resumes.
In addition, the IntelliTripTM electronic circuit breaker has a fast Hard Fault shutdown, with a threshold set at 4 times the Over-Current trip point.
When activated, the GATE is immediately turned off and then slowly turned back on for a single retry.
The IS+, IS-, and ISOUT pins combine to provide a load current monitor feature that presents a scaled version of the load current at the ISOUT pin.
Current to voltage conversion is accomplished by placing a resistor (R9) from ISOUT to the negative input (-48V).
Related Literature • ISL6142/52EVAL1 Board Set, Document AN1000 • ISL6140/50EVAL1 Board Set, Document AN9967 • ISL6140/41EVAL1 Board Set, Document AN1020 • ISL6141/51 Hot Plug Controller, Document FN9079 • ISL6141/51 Hot Plug Controller, Document FN9039 • ISL6116 Hot Plug Controller, Document FN4778 NOTE: See www.
intersil.
com/hotplug for more information.
Pinout ISL6142 OR ISL6152...


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