MIC2583 Micrel Semiconductor, MIC2583 Datasheet

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... The MIC2582 and MIC2583 are single channel positive voltage hot swap controllers designed to allow the safe insertion of boards into live system backplanes. The MIC2582 and MIC2583 are available in 8-pin SOIC and 16-pin QSOP packages, respectively. Using a few external components and by controlling the gate drive of an external N-Channel ...

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... Part Number MIC2582-JBM MIC2583-xBQS MIC2583R-xBQS * Contact factory for availability. Pin Configuration /POR CPOR 3 GND 4 8-Pin SOIC (M) MIC2582/MIC2583 Fast Circuit Breaker Threshold Circuit Breaker 100mV 100mV 150mV 200mV Off 100mV x = K*, 150mV x = L*, 200mV x = M*, Off 8 VCC 7 ...

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... START ), a start cycle is initiated START is immediately discharged to ground. When POR , capacitor CPOR begins to charge again. FB defaults the GATE voltage TRIPSLOW (50mV) is TRIPSLOW , then the circuit breaker is OCSLOW TRIPFAST disabled). Please contact TRIPFAST MIC2582/MIC2583 Micrel ). POR , at ...

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... Low. The /FAULT pin is asserted when the circuit breaker trips due to an overcurrent condition or when an undervoltage lockout condition exists. The /FAULT pin requires a pull-up resistor (10k minimum) to VCC. 13 Discharge Output: When the MIC2583/83R is turned off, a 500 resistor at this output allows the discharging of any load capacitance to ground. 6,9,10 No internal connection. ...

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... CC ) (J-A) + Min Typ 2.3 1 TRIPSLOW V (MIC2582) 100 TRIPFAST 100 TRIPFAST (MIC2583/83R 130 150 175 200 V > 2.3V 3.5 4.8 CC =13.2V – – 13.2V, Note 4 100 2.3V, Note 4 50 ...

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... MIC2582/MIC2583 Symbol Parameter V Power-Good Threshold Voltage Hysteresis FBHYS V /POR, /FAULT, PWRGD OL Output Voltage (/FAULT, PWRGD MIC2583/83R only) R Output Discharge Resistance DIS (MIC2583/83R only) AC Parameters (Note 4) t Fast Overcurrent SENSE to GATE OCFAST Low Trip Time t Slow Overcurrent SENSE to GATE OCSLOW Low Trip Time ...

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... TEMPERATURE ( C) Auto-Restart Threshold Voltage vs. Temperature (Upper) MIC2583R 1.400 1.350 V = 13.2V CC 1.300 1.250 1.200 1.150 1.100 -40 - 100 TEMPERATURE ( C) Gate Voltage vs. Temperature 12 -40 - 100 TEMPERATURE ( C) MIC2582/MIC2583 ...

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... TEMPERATURE ( C) Gate Current vs. Gate Voltage @ – 13 VOLTAGE (V) MIC2582/MIC2583 Circuit Breaker Fast (V ) TRIP vs. Temperature 120 V = 2.3V CC 110 100 13. 5. -40 -20 ...

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... Test Circuit 100k V IN – April 2003 R SENSE IRF7413 0.025 or equivalent VCC SENSE GATE C DUT GATE ON FB Figure 5. Applications Test Circuit (not all pins shown for simplicity OUT + C V LOAD OUT R LOAD – R1 12.4k 1% MIC2582/MIC2583 Micrel ...

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... MIC2582/MIC2583 Functional Characteristics Turn 12V OUT TIME (10ms/div.) Turn OUT TIME (5ms/div.) Turn GATE (MIC2583) TIME (250 s/div.) MIC2582/MIC2583 (See Figure 5, Applications Test Circuit 4 100 F LOAD C = 47nF GATE LOAD R = 100k 4 100 F LOAD ...

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... GATE = 100 F LOAD = 100nF FILTER = 6 LOAD = 1.7A LIM = 100k OUT GATE LOAD LOAD I = 3.3A LIM R = 33k 1 11 Turn On Into Short Circuit - OUT GATE LOAD C = 100nF FILTER 1.7A LIM R = 33k 1 TIME (2.5ms/div.) MIC2582/MIC2583 Micrel ...

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... REF 6.5 A 7,8(4) GND 12( – REF CPOR 4 (3) CPOR + – 0.3V + – V REF MIC2582/MIC2583 MIC2583/83R Charge Pump UVLO 2.2V Logic Glitch Filter Pin numbers for MIC2582 are in parenthesis ( ) where applicable 12 14(6) GATE 9V 21V 500 13 DIS Circuit Breaker Trips or UVLO 11 /FAULT 1(1) /POR 2 PWRGD ...

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... The MIC2582 and MIC2583 act as a controller for external N-Channel MOSFET devices in which the gate drive is controlled to provide inrush current limiting and output voltage slew rate control during hot plug insertions ...

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... OCSLOW connected to CFILTER and for the MIC2582 and the GATE output is immediately pulled to ground. For the MIC2583/83R, the following equation is used to determine the overcurrent timer period OCSLOW where V the overcurrent timer current, is 6.5 A. Tables 2 and 3 provide a quick reference for several timer calculations using select standard value capacitors ...

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... FB tolerance for R6 and higher tolerance for R5, 12.28k 94.03k , respectively. With only 11.4V available, the voltage sensed at the FB pin exceeds V PWRGD (MIC2583/83R) signals will transition from LOW to HIGH, indicating “power is good” given the worse case tolerances of this example. PCB Connection Sense There are several configuration options for the MIC2582/83’s ON pin to detect if the PCB has been fully seated in the backplane before initiating a start-up cycle ...

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... Undervoltage Lockout Threshold (rising) = 9.5V Undervoltage Lockout Threshold (falling) = 9.1V Undervoltage (Output) = 11.4V Additional pins omitted for clarity. MIC2582/MIC2583 5V Switch with 3.3V Supply Generation The MIC2582/83 can be configured to switch a primary IN supply while generating a secondary regulated voltage rail. The circuit in Figure 8 enables the MIC2582 to switch a 5V supply while also providing a 3 ...

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... The interval between auto-retry attempts is set by capacitor C Sense Resistor Selection The MIC2582 and MIC2583 use a low-value sense resistor to measure the current flowing through the MOSFET switch (and therefore the load). This sense resistor is nominally set at 50mV/I ...

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... START-UP Delay = 6ms *Recommended for MOSFETs with gate-source breakdown of 20V or less for catastrophic output short circuit protection. (IRF7822 V GS (MAX) = 12V) MIC2582/MIC2583 is not hard to meet. In MIC2582/83 applications, the gate of the external MOSFET is driven up to approximately 19.5V by the internal output MOSFET (again, assuming 12V opera- tion) ...

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... IN OCSLOW is 2.5A, the slow-trip threshold is 50mV = [12V-(2.5A)( 4.5V MOSFET = (4.5V x 2.5A) = 11.25W for 100msec. of this MOSFET to a highly infrequent (J- maximum, 1 square inch of copper at the which the A(MAX) and T . Since this is not a closed- A(MAX) J MIC2582/MIC2583 Micrel 2 R power ) OCSLOW . (J-A) of (J-A) ) from J ...

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... Current Flow to the Load W W Figure 11. Recommended PCB Layout for Sense Resistor, Power MOSFET, and Feedback Network MIC2582/MIC2583 So our original approximation of 61.1 C was very close to the correct value. We will use T Finally, add (11.25W)(50 C/W)(0.08 the steady- state T J able maximum junction temperature for this part. ...

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... Table 4. MOSFET and Sense Resistor Vendors 21 Contact Information 10A www.siliconix.com = 10-15A, V < 3V (203) 452-5664 CC 5A 15A 10A www.irf.com = 10-15A (310) 322-3331 5A, V < 10A www.fairchildsemi.com (207) 775-8100 20A www.philips.com 20A www.halsp.hitachi.com (408) 433-1990 Contact Information www.vishay.com/docswsl_30100.pdf (203) 452-5664 www.irctt.com/pdf_files/OARS.pdf www.irctt.com/pdf_files/LRC.pdf (828) 264-8861 MIC2582/MIC2583 Micrel ...

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... A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify MIC2582/MIC2583 PIN 1 ...