ISL6140_14 Datasheet, PDF (1/19 Pages) Intersil Corporation – Negative Voltage Hot Plug Controller

Negative Voltage Hot Plug Controller
ISL6140, ISL6150
The ISL6140 is an 8 Ld, negative voltage hot plug
controller that allows 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
undervoltage threshold, or greater than the overvoltage
threshold. A programmable electronic circuit breaker
protects the system against shorts. The active low
PWRGD signal can be used to directly enable a power
module (with a low enable input)
The ISL6150 is the same part, but with an active high
PWRGD signal.
Features
• Low Side External NFET Switch
• Operates from -10V to -80V (-100V absolute max
rating) or +10V to +80V (+100V absolute max
rating)
• Programmable Inrush Current
• Programmable Electronic Circuit Breaker
(overcurrent shutdown)
• Programmable Overvoltage Protection
• Programmable Undervoltage Lockout
• Power Good Control Output
- PWRGD Active High: (H Version) ISL6150
- PWRGD active Low: (L Version) ISL6140
• Pb-free available (RoHS compliant)
Applications
• VoIP (Voice over Internet Protocol) Servers
• Telecom systems at -48V
• Negative Power Supply Control
• +24V Wireless Base Station Power
Related Literature
• ISL6140/50EVAL1 Board Set, AN9967
• ISL6116 Hot Plug Controller, FN9100
NOTE: See www.intersil.com/hotplug for more information.
Typical Application (RL and CL are the Load)
GND
GND
R₄
UV
V_DD
R₅
OV
ISL6140
R₆
V_{EE SENSE GATE}
PWRGD
DRAIN
(LOAD)
-48V IN
C_{1 R2} R_{3 C2}
C_L
R_L
R₁
Q₁
-48V_OUT
R₃ = 18kΩ (5%)
C_L = 100µF (100V)
R₅ = 9.09kΩ (1%)
R₆ = 10kΩ (1%)
C₁ = 150nF (25V)
R₂ = 10Ω (5%)
R₄ = 562kΩ (1%)
C₂ = 3.3nF (100V)
Q₁ = IRF530 (100V, 17A, 0.11Ω)
R₁ = 0.02Ω (1%)
April 29, 2010
FN9039.4
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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