MIC2594-2YM Micrel Inc, MIC2594-2YM Datasheet
MIC2594-2YM
Specifications of MIC2594-2YM
Related parts for MIC2594-2YM
MIC2594-2YM Summary of contents
Page 1
... If a fault condition exceeds a built-in 400µs nuisance-trip delay, the MIC2588 and the MIC2594 will latch the circuit breaker’s output off and will remain in the off state until reset by cycling either the UV/OFF pin or the power to the IC. A master Power-Good signal is provided to indicate that the output voltage of the soft-start circuit is within its valid output range ...
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... MIC2588/MIC2594 Ordering Information Part Number Standard Pb-Free MIC2588-1BM MIC2588-1YM MIC2588-2BM MIC2588-2YM MIC2594-1BM MIC2594-1YM MIC2594-2BM MIC2594-2YM Pin Configuration PWRGD VEE 4 8-Pin SOIC (M) MIC2588-1BM PWRGD OFF 3 VEE 4 8-Pin SOIC (M) MIC2594-1BM M9999-083005 PWRGD Polarity Lockout Functions Active-High Undervoltage and Overvoltage Active-Low Undervoltage and ...
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... Taken together, the OV and UV pins form a window comparator which defines the limits of V load may safely be powered. MIC2594: Turn-Off Threshold. When the voltage at the OFF pin is less than the V threshold, the GATE pin is immediately pulled low by an internal OFFL 100µ ...
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... MIC2588/MIC2594 Absolute Maximum Ratings (All voltages are referred Supply Voltage (V – ...........................–0.3V to 100V DD EE DRAIN, PWRGD pins ....................................–0.3V to 100V GATE pin ......................................................–0.3V to 12.5V SENSE, OV, UV, ON, OFF pins .........................–0. Lead Temperature (soldering) Standard package (-xBM) (IR Reflow, Peak Temperature) ........ 240°C +0°C/–5°C Pb-Free Package-(xYM) (IR Refl ...
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... MIC2588/MIC2594 AC Electrical Characteristics Symbol Parameter t Built-in Overcurrent Nuisance Trip FLT (6) Time Delay (Figure 1) t Overcurrent Sense to GATE Low OCSENSE (Figure 2) ( GATE Low (Figure 3) OVPHL ( GATE High (Figure 3) OVPLH ( GATE Low (Figure 4) UVPHL ( GATE High (Figure 4) UVPLH t DRAIN High to PWRGD Output Low ...
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... MIC2588/MIC2594 GATE GATE MIC2588/94-1 V DRAIN PWRGD not asserted V PWRGD PWRGD MIC2588/94-2 V DRAIN /PWRGD September 2005 1.223V t OVPHL 1V Figure 3. Overvoltage Response 1.223V t UVPHL 1V Figure 4. Undervoltage Response V V PGTH PGTH PGH1 PGL1 PWRGD asserted - High Impedance Ð DRAIN PGTH PGL2 V EE Figure 5. DRAIN to Power-Good Response 6 1 ...
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... MIC2588/MIC2594 Typical Characteristics [Section under construction] Supply Current vs. Temperature -40 - 100 TEMPERATURE (°C) GATE Drive ( GATE EE vs. Supply Voltage 25° SUPPLY VOLTAGE (V) UV Pin Threshold vs. Temperature 1.28 1.27 1.26 1.25 V UVH 1.24 1.23 V UVL 1.22 1.21 1.2 -40 - 100 TEMPERATURE (°C) Power-Good Low Voltage vs ...
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... IN (Long Pin) M9999-083005 /PWRGD VDD DRAIN R2 MIC2588-2BM 11.8kΩ GATE 4 5 VEE SENSE C2 0.22uF R SENSE (see photos) MIC2588/MIC2594 Test Circuit 8 -48V RTN C5 C4 100uF 0.1uF R C FDBK FDBK 10kΩ R4 10Ω C3 0.1uF -48V IRF540 LOAD September 2005 Micrel OUT ...
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... MIC2588/MIC2594 Functional Characteristics Turn-On Response TIME (5ms/div.) Turn-On (Circuit Breaker Trip) Into Large C Circuit Breaker Trips TIME (100µs/div.) M9999-083005 R = 0.05Ω SENSE C = 22nF FDBK LOAD R = 0.01Ω SENSE C = 1500µ 6.8nF FDBK C = 0.22µ Hot-Plug Turn-On Response R = 0.05Ω SENSE ...
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... MIC2588/MIC2594 Functional Diagram Internal VDD VDD Reference Generator SENSE + – VEE 50mV UV – TH(UV/OV) – September 2005 V DD1 and V REF1 Current Limit State Nuisance Trip Filter (400s) Logic + Circuit Breaker MIC2588 Block Diagram 10 V DD1 45A GATE 100 DD1 ...
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... The MIC2588 and the MIC2594 are designed to address these issues by limiting the magnitude of the transient or inrush cur- rent during hot swap events. This is achieved by controlling the rate at which power is applied to the circuit board (di/dt and dv/dt management) ...
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... Similarly to the MIC2588, each of these pins is internally connected to an analog comparator with 20mV of hysteresis. The MIC2594 holds the output off until the voltage at the ON pin exceeds its V “Electrical Characteristics” table. Once the output has been ...
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... MIC2588/MIC2594 the OFF pin falls below its V threshold value, or the part OFFL turns off due to a fault. Should either event occur, the GATE pin is immediately pulled low and will remain low until the ON pin once again exceeds its V ONH turn-on and turn-off points are set using the resistor divider R1, R2, and R3 as shown in the “ ...
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... OFF protection against sudden on-card load dumps at the DRAIN pin of the MIC2588/MIC2594 controller, a 68V, 1W, 5% Zener diode clamp (D2) connected from the DRAIN to the VEE of the controller can be implemented, as shown. To protect the controller from large-scale transients at the card input, a 100V clamp diode (D1, SMAT70A or equivalent) can be used ...
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... A 0.5W sense resistor is a good choice in this application. Power MOSFET Selection . Selecting the proper external MOSFET for use with the- EE MIC2588/MIC2594 involves three straightforward tasks: •Choice of a MOSFET which meets minimum voltage requirements. (9) •Selection of a device to handle the maximum continuous current (steady-state thermal issues). ...
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... V IN(MAX) DD The second breakdown voltage criterion that must be met is the gate-source voltage. For the MIC2588/MIC2594, the gate of the external MOSFET is driven maximum of 11V above VEE. This means that the external MOSFET must be chosen to have a gate-source breakdown voltage of 12V or more; 20V is recommended. Most power MOSFETs with a 20V gate-source voltage rating have a 30V drain-source breakdown rating or higher ...
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... The use of the Transient Thermal Impedence Curves is (10) necessary to determine the increase in junction temperature associated with a worst-case transient condition. From our previous calculation of the maximum power dissipated during a short circuit event for the MIC2588/MIC2594, we calculate the transient junction temperature increase as: T (transient – R ...
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... Other Layout Considerations Figure suggested PCB layout diagram for the MIC2588/ MIC2594. Many hot swap applications will require load currents of several amperes. Therefore, the power (V trace widths (W) need to be wide enough to allow the current Via to the ...
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... MIC2588/MIC2594 MOSFET and Sense Resistor Vendors Device types, part numbers, and manufacturer contacts for power MOSFTETS and sense resistors are provided in Table 1. MOSFET Vendors Key MOSFET Type(s) SUM75N06-09L (TO-263) SUM70N06-11 (TO-263) SUM50N06-16L (TO-263) Vishay - Siliconix SUP85N10-10 (TO-220AB) SUB85N10-10 (TO-263) SUM110N10-09 (TO-263) ...
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... MIC2588/MIC2594 /PWRGD Signal Drive Capability The /PWRGD signal can be used to drive an optoisolator or an LED. The use of an optoisolator is sometimes needed to protect I/O signals (e.g., /PWRGD, RESET, ENABLE) of both the controller and downstream DC-DC converter(s) from damage caused by common mode transients. Such R5 43kΩ ...
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... MIC2588/MIC2594 Package Information 0.026 (0.65) MAX) 0.157 (3.99) 0.150 (3.81) 0.064 (1.63) 0.045 (1.14) MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The information furnished by Micrel in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. ...