ISL6140/41EVAL1

ISL6140/41EVAL1 Datasheet

ISL6140/41EVAL1 Board

Part	Datasheet
ISL6140/41EVAL1	ISL6140/41EVAL1 (pdf)

Related Parts	Information
ISL6140/41EVAL1Z	ISL6140/41EVAL1Z

PDF Datasheet Preview
Application Note ISL6140/41EVAL1 Board June 2002 AN1020 ISL6140/41Negative TM Voltage Hot Plug Controller The ISL6140 is an 8-pin, 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 Nchannel 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. 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. The ISL6141/51 are pin compatible with the ISL6140/50. In addition to the features noted above these enhanced hot plug controllers offer programmable current limiting with a 600us time-out. When the Over-Current threshold is exceeded, the output current is limited for 600µs before the circuit breaker shuts down the FET. If the fault disappears before the 600µs time-out, normal operation resumes.The new IntelliTripTM electronic circuit breaker has a fast Hard Fault shutdown with a threshold set at 4 times the current limit value. When activated, the GATE is immediately turned off and then slowly turned back on for a single retry softstart . The GATE and DRAIN voltages are both monitored with separate comparators to enable the Power Good output at start-up. When the DRAIN and GATE voltage conditions are met, the comparators trip and latch the PWRGD/PWRGD output into the active state. At this point any of the signals that turn off the gate will reset the latch and drive the PWRGD/PWRGD output inactive. R4 UV ISL6140/41 VEE SENSE GATE PWRGD DRAIN LOAD R3 R2 CL RL -48V IN -48V OUT R1 = 1% R2 = 5% R3 = 5% R4 = 1% R5 = 1% R6 = 1% C1 = 150nF 25V C2 = 3.3nF 100V Q1 = IRF530 100V, 17A, CL = 100µF 100V RL = equivalent load Features ISL6140/41/50/51 • Low Side External NFET Switch • ISL6140/50 operates from -10V to -80V -100V absolute max rating or +10V to +80V +100V absolute max rating • ISL6141/51operates from -20V to -80V -100V absolute max rating or +20V to +80V +100V absolute max rating • Programmable Inrush Current • Programmable Electronic Circuit Breaker Over-Current shutdown • Programmable Over-Voltage Protection • Programmable Under-Voltage Protection • Power Good Control Output - PWRGD Active High H Version ISL6150/51 - PWRGD Active Low L Version ISL6140/41 Features ISL6141/51 • Programmable Current Limit with 600µs time-out • IntelliTripTM electronic circuit breaker distinguishes between Over-Current and Hard Fault conditions - Fast shutdown for Hard Faults with a single retry fault current > 4X current limit value • Under voltage threshold hysteresis increased to 135mV • VDD Under-Voltage Lock-Out UVLO • Power Good Control Output - Monitors both the DRAIN voltage drop across the FET and the GATE voltage - When DRAIN and GATE voltages are within tolerance the Power Good output is latched in the active state • VoIP Voice over Internet Protocol Servers • Telecom systems at -48V • Negative Power Supply Control • +24V Wireless Base Station Power

PDF Datasheet Preview

Application Note

ISL6140/41EVAL1 Board

June 2002

AN1020

ISL6140/41Negative TM Voltage Hot Plug

Controller

The ISL6140 is an 8-pin, 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 Nchannel 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. 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.

The ISL6141/51 are pin compatible with the ISL6140/50. In addition to the features noted above these enhanced hot plug controllers offer programmable current limiting with a 600us time-out. When the Over-Current threshold is exceeded, the output current is limited for 600µs before the circuit breaker shuts down the FET. If the fault disappears before the 600µs time-out, normal operation resumes.The new IntelliTripTM electronic circuit breaker has a fast Hard Fault shutdown with a threshold set at 4 times the current limit value. When activated, the GATE is immediately turned off and then slowly turned back on for a single retry softstart . The GATE and DRAIN voltages are both monitored with separate comparators to enable the Power Good output at start-up. When the DRAIN and GATE voltage conditions are met, the comparators trip and latch the PWRGD/PWRGD output into the active state. At this point any of the signals that turn off the gate will reset the latch and drive the PWRGD/PWRGD output inactive.

R4 UV

ISL6140/41

VEE SENSE GATE

PWRGD

DRAIN

LOAD

R3 R2

CL RL
-48V IN
-48V OUT

R1 = 1% R2 = 5% R3 = 5% R4 = 1% R5 = 1% R6 = 1%

C1 = 150nF 25V C2 = 3.3nF 100V Q1 = IRF530 100V, 17A, CL = 100µF 100V RL = equivalent load

Features ISL6140/41/50/51
• Low Side External NFET Switch
• ISL6140/50 operates from -10V to -80V -100V absolute max rating or +10V to +80V +100V absolute max rating
• ISL6141/51operates from -20V to -80V -100V absolute max rating or +20V to +80V +100V absolute max rating
• Programmable Inrush Current
• Programmable Electronic Circuit Breaker Over-Current shutdown
• Programmable Over-Voltage Protection
• Programmable Under-Voltage Protection
• Power Good Control Output
- PWRGD Active High H Version ISL6150/51 - PWRGD Active Low L Version ISL6140/41

Features ISL6141/51
• Programmable Current Limit with 600µs time-out
• IntelliTripTM electronic circuit breaker distinguishes
between Over-Current and Hard Fault conditions - Fast shutdown for Hard Faults with a single retry fault
current > 4X current limit value
• Under voltage threshold hysteresis increased to 135mV
• VDD Under-Voltage Lock-Out UVLO
• Power Good Control Output
- Monitors both the DRAIN voltage drop across the FET and the GATE voltage
- When DRAIN and GATE voltages are within tolerance the Power Good output is latched in the active state
• VoIP Voice over Internet Protocol Servers
• Telecom systems at -48V
• Negative Power Supply Control
• +24V Wireless Base Station Power

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Datasheet ID: ISL6140/41EVAL1 639165