MIC5013 Micrel Semiconductor, MIC5013 Datasheet
MIC5013
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MIC5013 Summary of contents
Page 1
... The MIC5013 is compatible with standard or current-sensing power MOSFETs in both high- and low-side driver topologies. The MIC5013 charges a 1nF load typical and protects the MOSFET from over-current conditions. The current sense trip point is fully programmable and a dynamic threshold allows high in-rush current loads to be started ...
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... Supply pin; must be decoupled to isolate from large transients caused by the power FET drain recommended close to pins 7 and 5. Fault Outputs status of protection circuit when pin 1 is high. Fault low indicates normal operation; fault high indicates current sense tripped. MIC5013 1 8 Input Fault ...
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... C, and 100% guaranteed over the entire A MIC5013 Micrel ...
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... SUPPLY VOLTAGE (V) High-side Turn-on Time* 350 300 250 200 150 100 SUPPLY VOLTAGE ( Time for gate to reach test circuit with MIC5013 V+ I3 MIC5013 8 1 Input Fault 2 7 Thresh Sense Gate 4 5 Source Gnd 500 1W 3.5k S4 ...
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... VS=V – SUPPLY VOLTAGE (V) 5 Low-side Turn-on Time for Gate = 10V 3000 C =10 nF GATE 1000 300 100 GATE SUPPLY VOLTAGE (V) Turn-on Time 2.0 1.75 1.5 1.25 1.0 0.75 0.5 – 100 125 DIE TEMPERATURE (° + Micrel 15 MIC5013 ...
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... Applications Information Functional Description (refer to block diagram) The various MIC5013 functions are controlled via a logic block connected to the input pin 1. When the input is low, all functions are turned off for low standby current and the gate of the power MOSFET is also held low through 500 to an N-channel switch ...
Page 7
... Control Input R 10k Circuit Topologies The MIC5013 is suited for use in high- or low-side driver applications with over-current protection for both current- sensing and standard MOSFETs. In addition, the MIC5013 works well in applications where, for faster switching times, the supply is bootstrapped from the MOSFET source out- put. Low voltage, high-side drivers (such as shown in the Test Circuit) are the slowest ...
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... The MOSFET is forced into conduction, and it dissipates the energy stored in the load inductance. The MIC5013 source and sense pins (3 and 4) are designed to withstand this negative excursion without damage. Exter- nal clamp diodes are unnecessary. ...
Page 9
... A “resistive” short that draws less than 70A could destroy the MOSFET by allowing sustained, excessive dissipation. If the over-cur rent trip point is set to less than 70A, the MIC5013 will not DS(ON) for start a cold filament. The solution is to start the lamp with a ...
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... If the load is left energized for a long period of time (>25ms), the bootstrap capacitor will discharge and the MIC5013 supply pin will fall –1.4. Under this condition pins 3 and 4 will be held above V+ and may false trigger the over-current circuit. A larger capacitor will lengthen the maximum “ ...
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... Cross conduction increases output device power dissipa- tion and, in the case of the MIC5013, could trip the over- current comparator. Speed is also important, since PWM control requires the outputs to switch in the 2 to 20kHz range ...
Page 12
... ON. When released, the switch returns to the “RUN” position, and the tachometer’s output is used to hold the MIC5013 input ON. If the motor slows down, the tach output is reduced, and the MIC5013 switches OFF. Resis- tor “R” sets the shutdown threshold. If the output current exceeds 30A, the MIC5013 shuts down and remains in that condition until the momentary “ ...
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... Over-Current Protection 1N4148 330k MIC5013 1 Input Fault 330k 2 Thresh V+ 20k 3 Gate Sense 4 Source Gnd 1N4148 100nF T 12V START RUN STOP Figure 13. Motor Stall Shutdown 13 IRCZ44 SOURCE OUTPUT (Delay=5s) KELVIN 12V 10µ IRCZ44 SOURCE SENSE 43 KELVIN 4.3k M Micrel MIC5013 ...
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... Q6 is turned on. Q6 holds the gate pin (G) at ground potential which effectively turns the external MOS- FET off turned off when the MIC5013 is commanded on. Q5 pulls the gate up to supply (through 2 diodes). Next, the charge pump begins supplying current to the gate. The gate accepts charge until the gate-source voltage reaches 12 ...
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... Plastic DIP (N) MAX) PIN 1 DIMENSIONS: INCHES (MM) 0.020 (0.51) 0.013 (0.33) 0.050 (1.27) TYP 0.0098 (0.249) 0.0040 (0.102) 0 –8 0.197 (5.0) 0.189 (4.8) SEATING PLANE 8-Pin SOP (M) 15 0.255 (6.48) 0.245 (6.22) 0.300 (7.62) 0.013 (0.330) 0.010 (0.254) 45 0.010 (0.25) 0.007 (0.18) 0.050 (1.27) 0.016 (0.40) 0.244 (6.20) 0.228 (5.79) Micrel MIC5013 ...
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... This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc. MIC5013 + 1 (408) 944-0970 http://www ...