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ISL6142CB Datasheet

  • ISL6142CB

  • Negative Voltage Hot Plug Controller

  • 23頁

  • INTERSIL   INTERSIL

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廬
ISL6142, ISL6152
Data Sheet
July 2004
FN9086.1
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 Over-
Voltage 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 IntelliTrip
TM
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 IntelliTrip
TM
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 IS
OUT
pins combine to provide a load current
monitor feature that presents a scaled version of the load current
at the IS
OUT
pin. Current to voltage conversion is accomplished
by placing a resistor (R9) from IS
OUT
to the negative input (-48V).
Typical Application
Logic
Supply
GND
FAULT
DIS
R10
R4
UV
R5
OV
R6
CT V
EE
IS-
IS+ SENSE GATE
DRAIN
LOAD
R9
C3
R7
R8
C1
R3 C2
R2
CL
RL
-48V IN
R1
Q1
-48V OUT
IS
OUT
V
DD
GND
PWRGD
PWRGD
ISL6142/ISL6152
R1 = 0.02鈩?(1%)
R2 = 10鈩?(5%)
R3 = 18K鈩?(5%)
R4 = 549K鈩?(1%)
R5 = 6.49K鈩?(1%)
R6 = 10K鈩?(1%)
R7 = R8 = 400鈩?(1%)
R9 = 4.99K鈩?(1%)
R10 = 5.1K鈩?(10%)
C1 = 150nF (25V)
C2 = 3.3nF (100V)
C3 = 1500pF (25V)
Q1 = IRF530
CL = 100uF (100V)
RL = Equivalent load
Features
鈥?Operates from -20V to -80V (-100V Absolute Max Rating)
鈥?Programmable Inrush Current
鈥?Programmable Time-Out
鈥?Programmable Current Limit
鈥?Programmable Over-Voltage Protection
鈥?Programmable Under-Voltage Protection
- 135 mV of hysteresis ~4.7V of hysteresis at the power supply
鈥?V
DD
Under-Voltage Lock-Out (UVLO) ~ 16.5V
鈥?IntelliTrip
TM
Electronic Circuit Breaker distinguishes between
severe and moderate faults
- Fast shutdown for short circuit faults with a single retry (fault
current > 4X current limit value).
鈥?FAULT pin reports the occurrence of an Over-Current Time-Out
鈥?Disable input controls GATE shutdown and resets Over-Current
fault latch
鈥?Load Current Monitor Function
- IS
OUT
provides a scaled version of the load current
- A resistor from IS
OUT
to -V
IN
provides current to voltage
conversion
鈥?Power Good Control Output
- Output latched 鈥済ood鈥?when DRAIN and GATE voltage
thresholds are met.
- (PWRGD active low: ISL6142 (L version)
- PWRGD active high: ISL6152 (H version)
鈥?Pb-free available
Related Literature
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
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 (14 LEAD SOIC)
PWRGD/PWRGD 1
FAULT 2
DIS
OV
UV
IS-
V
EE
3
4
5
6
7
ISL6142/52
Top View
14 V
DD
13 CT
12 IS
OUT
11 DRAIN
10 GATE
9
8
IS+
SENSE
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
1
VoIP (Voice over Internet Protocol) Servers
Telecom systems at -48V
Negative Power Supply Control
+24V Wireless Base Station Power
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Intersil and Design is a registered trademark of Intersil Americas Inc.
Intellitrip鈩?is a trademark of Intersil Americas Inc.
Copyright 漏 Intersil Americas Inc. 2002, 2004, All Rights Reserved

ISL6142CB 產(chǎn)品屬性

  • 50

  • 集成電路 (IC)

  • PMIC - 熱交換

  • -

  • 熱交換控制器

  • 通用型 VoIP

  • 無

  • -

  • 36 V ~ 72 V

  • 0°C ~ 70°C

  • 表面貼裝

  • 14-SOIC（0.154"，3.90mm 寬）

  • 14-SOICN

  • 管件

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