ISL6140 Intersil Corporation, ISL6140 Datasheet
ISL6140
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ISL6140 Summary of contents
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... Data Sheet PRELIMINARY Negative 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 N-channel pass transistor ...
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... Pin Description PWRGD (ISL6140; L Version) Pin 1 - This digital output is an open-drain pull-down device. The Power Good comparator looks at the DRAIN pin voltage compared to the internal VPG reference (VPG is nominal 1.7V); this essentially measures the voltage drop across the external FET and sense resistor. If the voltage drop is small (<1.7V is normal), the PWRGD pin pulls low (to VEE) ...
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... OV PIN OV Pin High Threshold Voltage OV Pin Low Threshold Voltage OV Pin Hysteresis OV Pin Input Current 3 ISL6140, ISL6150 Thermal Information Thermal Resistance (Typical, Note 1) 8 Lead SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maximum Junction Temperature (Plastic Package .150 Maximum Storage Temperature Range . . . . . . . . . -65 Maximum Lead Temperature (Soldering 10s .300 ...
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... PARAMETER DRAIN PIN Power Good Threshold ( Power Good Threshold ( Power Good Threshold Hysteresis Drain Input Bias Current ISL6140 (PWRGD PIN: L VERSION) PWRGD Output Low Voltage Output Leakage ISL6150 (PWRGD PIN: H VERSION) PWRGD Output Low Voltage (PWRGD-DRAIN) PWRGD Output Impedance ...
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... ISL6150 FIGURE 1. TYPICAL TEST CIRCUIT 2V 1.223V PHLOV 13V GATE 1V 0V FIGURE 3A GATE TIMING 1.8V DRAIN t PLHPG PWRGD 1.0V FIGURE 4A. DRAIN TO PWRGD TIMING (ISL6140) 5 ISL6140, ISL6150 + 48V - DRAIN DRAIN 7 GATE 6 SENSE 5 V SENSE 2V 1.203V PLHOV 13V ...
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... ISL6140/ISL6150 Block Diagram GND UVL OVH + (1.223V -48V IN R1 Typical Values for a representative system; which assumes: 36V to 72V supply range; 48 nominal 37V 71V 1A of typical current draw; 2.5 Amp Over-Current 100µF of load capacitance (CL); equivalent RL of 48Ω ...
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... R3 = (Vinmax + deltaVgate)/5mA - its value is not critical; a typical value is 18kΩ. Applications: Inrush Current The primary function of the ISL6140 hot plug controller is to control the inrush current. When a board is plugged into a live backplane, the input capacitors of the board’s power supply circuit can produce large current transients as they charge up ...
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... Ideally trace routing between the R1 resistor and the ISL6140/ISL6150 (pin 4 (VEE) and pin 5 (SENSE) is direct and as short as possible with zero current in the sense lines. (See Figure 5). ...
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... Applications: PWRGD/PWRGD The PWRGD/PWRGD outputs are typically used to directly enable a power module, such as a DC/DC converter. The PWRGD (ISL6140) is used for modules with active low enable (L version); PWRGD (ISL6150) for those with active high enable (H version). The modules usually have a pull-up device built-in, as well as an internal clamp. If not, an external pull-up resistor may be needed, since the output is open drain ...
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... ENABLE input pin to turn off. A hot plug IC, such as the ISL6140, is often used to gate power to a brick, as well as turn it on. Many bricks have both logic polarities available (Enable input) ...
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... ISL6140/ISL6150. The brick’s output capacitance is also determined by the system, including load regulation considerations. However, it can affect the ISL6140/ISL6150, depending upon how it is enabled. For example, if the PWRGD signal is not used to enable the brick, the following could occur. Sometime during the inrush current time, as the main power supply starts charging the brick input capacitors, the brick itself will start working, and start charging its output capacitors and load ...
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... IDD Current (@ VDD = 80V) 0.95 0.93 0.91 0.89 0.87 0.85 -40 10 Tem perature (degC) FIGURE 14. IDD CURRENT (AT VDD = 80V) Gate Voltage (@ VDD = 17V) 14.5 14 13.5 13 12.5 12 -40 10 Tem perature (degC) FIGURE 16. GATE VOLTAGE (AT VDD = 17V) 12 ISL6140, ISL6150 15.000 12.000 60 80 100 15.000 12.000 110 7.5 7.0 6.5 6.0 5.5 5.0 60 110 9.000 6 ...
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... Tem perature (degC) FIGURE 18. GATE PULL-UP CURRENT Pow erGood-bar (6140) VOL (@1m A) Voltage 0.34 0.32 0.3 0.28 0.26 0.24 -40 10 Tem perature (degC) FIGURE 20. PWRGD (ISL6140) VOL (AT 1mA) VOLTAGE DRAIN/PG Up Trip Voltage 1.90 1.85 1.80 1.75 1.70 1.65 -40 10 Tem perature (degC) FIGURE 22. DRAIN/PG UP TRIP VOLTAGE DRAIN/PG Hysteresis Voltage 0.55 0.53 0.51 0.49 ...
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... The total time scale is 2 seconds; the VDD ramp speed was simply based on the inherent characteristic of the particular power supply used. 14 ISL6140, ISL6150 Over-Current at 2.3A In Figure 28, an Electronic Load Generator was used to ramp the load current; no load resistor or capacitor was connected. The sense Resistor R1 is 0.02Ω ...
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... voltage suppressor; SMAT70A or equivalent D2 and D3 are DRAIN diodes; the ISL6150 (H version) uses both D2 and D3; the ISL6140 (L version) uses just D2. If neither is used, short the path of either, to connect the DRAIN pin to C2 and Q1. The 1N4148 is a typical diode. ...
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... OV V SENSE GATE -48V FIGURE 31. TYPICAL APPLICATION 16 ISL6140, ISL6150 C2 VDD FIGURE 30. SAMPLE LAYOUT (NOT TO SCALE) NOTES: 1. Layout scale is approximate; routing lines are just for illustration purposes; they do not necessarily conform to normal PCB design rules. High current buses are wider, shown with parallel GND lines ...
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... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 17 ISL6140, ISL6150 M8.15 (JEDEC MS-012-AA ISSUE C) 8 LEAD NARROW BODY SMALL OUTLINE PLASTIC ...