Side Protected Switch MC3392 side protected switch designed harsh
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Order this document MC3392/D
Side Protected Switch
MC3392 side protected switch designed harsh automotive applications which require capability handling high voltages attributed load field dump transients, addition reverse double battery conditions. three terminal TO-220 intended replace power Darlington transistors existing switching applications when taking into account CMOS input levels required MC3392. offers improved functionality ruggedness over power Darlingtons while retaining same package configuration, used replacement many applications using industry standard TIP100/101 power Darlington transistor. five-terminal TO-220 added feature having Fault output (active low) which will indicate existence over temperature, over-voltage current limit condition, including output short ground. When driving moderate load, MC3392 performs extremely high gain, saturation Darlington transistor having CMOS input levels. primary advantage MC3392 over Darlington transistor additional protection afforded device load when driving difficult faulty loads. This device incorporates unique internal current limit thermal protection circuitry safeguard itself associated load from catastrophic failure. MC3392 available three five-lead TO-220 package; five-lead having added diagnostic feature. full featured MC3392 also available wide body SOIC plastic power package. Designed Automotive Applications
MC3392
SIDE PROTECTED SWITCH
SEMICONDUCTOR TECHNICAL DATA
Input Output Ground
(Heatsink surface connected
SUFFIX PLASTIC PACKAGE CASE 221A (TO-220)
Used Replacement TIP100/101 Power Darlingtons Drives Inductive Loads without External Clamp Circuitry Withstands Negative Positive Transient Voltages Voltage CMOS Logic Compatible Input Over Current, Overvoltage, Thermal Protection Extended Operating Temperature Range Fault Output
SUFFIX PLASTIC PACKAGE CASE 314D (TO-220)
Input Fault Ground Output
Simplified Block Diagram
CMOS Input
Fast Turnoff
Vout Over Voltage Detect
SUFFIX PLASTIC PACKAGE CASE 751G SOP(8+8)L
9-16.
Output Input Fault Ground
Thermal Shutdown
Current Limit Fault Device
ORDERING INFORMATION
Operating Temperature Range Package Plastic Power +125°C Plastic Power SOP(8+8)L
MC3392T MC3392T-1 MC3392DW
Motorola, Inc. 1996
MOTOROLA ANALOG DEVICE DATA
MC3392
MAXIMUM RATINGS
Rating Input Voltage Range Output Transient Breakdown Voltage Forward Output Transient Breakdown Voltage Reverse Short Circuit Current Output Avalanche Energy (Note Minimum Voltage Capability (Note Operating Junction Temperature Internally Limited (Note Storage Temperature Operating Ambient Temperature Range Thermal Resistance (Notes TO-220: Junction-to-Ambient Junction-to-Case SOP: Junction-to-Ambient Junction-to-Case Symbol Emax Tstg Value 2000 +150 +125 Unit °C/W 62.5
NOTES: Capability both positive negative repetitive transient pulses. testing performed accordance with Human Body Model (CZap RZap 1500 This device incorporates internal circuit techniques which allow internal junction temperature reach destructive temperatures. thermal resistance case considered point located near center plastic body TO-220 point heatsink leads (Pins SOP. thermal information based simulation data.
ELECTRICAL CHARACTERISTICS (Limit values noted under conditions: 40°C +125°C. Typical denotes calculated mean
value derived from 25°C parametric data, unless otherwise noted.) Characteristics Input Control Current Input Voltage High (On) Input Voltage (Off) Output Leakage Current Output Short Circuit Current Output Voltage (Vin Note Output Clamp Voltage Reverse Leakage Current Vout Fault Output Sink Saturation (ISink Fault Output Off-State Leakage (VDS Turn-On Time (400 Nominal) Turn-Off Time (400 Nominal) Propagation Delay Time Input Output (Turn-On/Turn-Off, 50%)
NOTE: defined output sink current.
Figure
Symbol
0.95
Unit
VDS(sat) IDS(leak)
MOTOROLA ANALOG DEVICE DATA
MC3392
FUNCTION DESCRIPTION
Number Name Vout Fault 3-Pin 5-Pin 16-Pin Description CMOS compatible input. Pins connection 751G. Output load battery, protected clamp against inductive load transients. Ground connection. Fault output pulled when operating fault state. open drain output requires pull-up resistor normal operation.
Figure Representative Block Diagram
CMOS Input Fast Turnoff Over Voltage Detect Thermal Shutdown Current Limit 7.2V Fault 5.0k 5.0V Vout
7.2V
25µA
Definition Currents Voltages. Positive current flow defined conventional current flow into device. Negative current flow defined current flow device. voltages referenced ground. Both currents voltages specified absolute (i.e., greater than -1.0
MOTOROLA ANALOG DEVICE DATA
MC3392
Figure Fault Output Timing Diagram
Vout
Fault
Inductive Load Clamp (OFF state)
Output Over Voltage Shorted Load
(Normal Operation)
Inductive Load
Incandescent Load
Current Limiting
Shorted Load
Figure Input Control Current versus Input Voltage
INPUT CONTROL CURRENT 125°C OUTPUT LEAKAGE CURRENT 25°C
Figure Output Leakage Current versus Temperature
40°C
AMBIENT TEMPERATURE (°C)
Vin, INPUT VOLTAGE
MOTOROLA ANALOG DEVICE DATA
Shorted Load Induced Thermal Limit
MC3392
Figure Output Short Circuit Current versus Temperature
OUTPUT SHORT CIRCUIT CURRENT VOn, OUTPUT VOLTAGE OPERATING AMBIENT TEMPERATURE (°C)
Figure Output Voltage versus Temperature
OPERATING AMBIENT TEMPERATURE (°C)
Figure Input Voltage versus Temperature
INPUT VOLTAGE HIGH OUTPUT CLAMP VOLTAGE
Figure Output Clamp Voltage versus Temperature
OPERATING AMBIENT TEMPERATURE (°C)
OPERATING AMBIENT TEMPERATURE (°C)
Figure Reverse Breakdown Voltage versus Temperature
REVERSE BREAKDOWN VOLTAGE DS(sat) OUTPUT SATURATION Transient Breakdown Pulse Width
Figure Fault Output Saturation versus Sink Current
125°C 25°C 40°C 25°C 25°C
Vout (short fault) ISink, SINK CURRENT (mA)
OPERATING AMBIENT TEMPERATURE (°C)
MOTOROLA ANALOG DEVICE DATA
MC3392
Figure Turn-On Waveform
Figure Turn-Off Waveform
Vout 25°C
Vout 25°C
Figure Output Current versus Supply Voltage
1.25 0.75 0.25 +VS, SUPPLY VOLTAGE Infinite Heatsink MAXIMUM LOAD INDUCTANCE OUTPUT CURRENT 25°C Heatsink
Figure Maximum Load Inductance versus Output Current
Emax
Safe Operating Region
External Clamp Needed
OUTPUT CURRENT
TECHNICAL DISCUSSION
Introduction MC3392 side protected switch incorporating many features making ideal harsh automotive applications. protection circuitry MC3392 protects only itself also associated load from destructive voltage transients attributed load field dump, well reverse double battery conditions found automotive applications. MC3392 unique that protection circuitry internal does require additional external protection components operation. This makes device very cost effective because application utilizes external components, thus reducing cost space requirements needed system. MC3392 extremely effective when used drive solenoids, well incandescent lamp loads. following description device's operation reference functional blocks Representative Block Diagram shown Figure CMOS Input input MC3392 CMOS compatible. Input control performs true logic. When input (Vin) less than MC3392 switch high impedance state. When greater than impedance state. switching threshold input approximately graphed Figure With input input sink current will approximately state, internal protection circuitry activated protection features available use. state, however, important note that none protection features available, with exception internal inductive load clamp. input afforded minimum 2000 protection (Human Body Model) virtue zener diode.
MOTOROLA ANALOG DEVICE DATA
MC3392
Over Temperature Shutdown Internal Thermal Shutdown Circuitry provided protect MC3392 event Operating Junction Temperature (TJ) exceeds 150°C. Typically, Thermal Shutdown will occur 160° 170°C. thermal shutdown sense element embedded within output (Q4) order afford very fast thermal coupling sense element. rise temperature ambient translated directly sense element. junction temperature rises excessively above 150°C, Thermal Shutdown circuit will turn quickly pulling gate ground, which pulls base ground, turning OFF. addition, Thermal Shutdown circuit simultaneously turns with suitable pull-up resistor Fault reports presence fault (logic low). output will remain until junction temperature decreases within operating range which time Thermal Shutdown turns OFF, ceasing hold gate low, turning back This process will repeat long thermal over load exists. This mode operation nondestructive safety feature device will correct itself real time when cause over temperature removed. continued over temperature condition will thermally Pulse Width Modulate (PWM) output Fault incorrectly interpreted oscillating load does consider simultaneous performance Fault pin. Current Limit MC3392 protects itself against Vout hard shorts well over current conditions reducing magnitude output current (IO) that short circuit current limit value (ISC). When output current monitored tries exceed ISC, Current Limit circuit lowers gate voltage lowering base causing load current through diminish. Simultaneously, when load current exceeds ISC, will turn reporting fault condition. output current allowed remain excessively high degree heatsinking incorporated, junction temperature device allowed heat beyond 150°C, Thermal Shutdown circuit will activate output will thermally PWM. Again, these modes operation safety features MC3392 destructive. Overvoltage Detect This circuitry protects MC3392 from Vout voltages excess lowering output current nondestructive value. With increasing Vout voltage Vout load current reduced below that produces fold back current effect. Vout increases excess output current decreases linearly until Vout exceeds With infinite heatsink Vout will less than other extreme, heatsink Vout expected less than about This behavior relation Vout shown Figure infinite heatsink case, output current initially increases with increased voltage until Vout exceeds thereafter behavior expressed [1-(Vout Beyond limited less than Anytime Overvoltage Detect circuit activated, gate pulled causing turn report fault Fault pin. Inductive Load Clamp MC3392 internal inductive load clamp protection against flyback voltages imposed output excess incorporated zener clamp quickly dissipate milli-Joules inductive flyback energy. Figure shows maximum inductive load versus load current that clamp handle safely. example (using Figure 14), operating MC3392 drive 0.33 inductor, maximum load current should adjusted less. load current high inductor used, some series resistance added load limit current. this possible, external clamp must used facilitate handling higher energy. When using external clamp, external clamp voltage must less than override internal clamp. output clamp offers protection output when MC3392 state. During state, other protection features (Overvoltage, Current, Temperature) available protect output. Fault Logic Fault comprised internal open drain requiring external pull-up resistor. Typically, pull-up resistor +5.0 supply satisfactory. Fault afforded minimum 2000 protection (Human Body Model) virtue zener diode. Fault will report fault (logic state) whenever MC3392 experiences fault condition. Conditions producing fault are: (over current/shorted load); 150°C (over temperature); Vout (overvoltage). device goes into Thermal Shutdown, caused environmental overheating (not resulting from another fault condition), Fault Vout will thermally MC3392 repeatedly heats shut off, cools, again turns current limit fault causes device into Thermal Shutdown, output will oscillate while Fault remains pulled low. There thermal hysteresis designed control effect this fault mode operation destructive. Fast Turn-Off This circuitry enhances MC3392 turn-off performance. Whenever goes logic state, Vout held state approximately During fast turn-off, less than current allowed flow producing abrupt turn-off. This turn-off characteristic seen Figure photograph typical turn-off waveform.
MOTOROLA ANALOG DEVICE DATA
MC3392
APPLICATIONS INFORMATION
Solenoid Driver MC3392 used drive variety solenoid applications similar that Figure example; driving solenoid having inductance 73.8 resistance from supply will cause sink current flow with MC3392 state. resulting current value within normal load current operating region will produce fault. Load current paramount design using MC3392 must less than acceptable operation. load current greater than ISC, current limit fault state will exist. Operation this state destructive device will turn Junction Temperature (TJ) rises above 150°C. When Junction Temperature cools below 150°C device will again turn-on, with repeat cycle. Careful design acceptable load current limits should insured satisfactory operation application.
Figure Solenoid Driver
CMOS Input
Fast Turnoff Over Voltage Detect
Vout
Solenoid
5.0V
Thermal Shutdown
Current Limit Fault
1.0k 5.0V
MC3392
MOTOROLA ANALOG DEVICE DATA
MC3392
Instrument Panel Lamp Dimmer Control MC3392 used control dimming function associated with instrument panel lamps. brightness incandescent lamps varied pulse width modulating input MC3392. modulating signal MC3392 obtained directly from microprocessor Figure from MC1455 timer. MC1455 timer configured free-running clock having both frequency duty cycle control. typical timer frequency approximately when frequency potentiometer adjusted This frequency chosen avoid perceptible lamp flicker. duty cycle potentiometer controls duty cycle over range approximately 3.0% 97%; When 3.0% duty cycle, lamps essentially off; When duty cycle, lamps essentially full lit. incandescent lamps shown this application drawing total current. Similar applications used drive variety lamp loads. total load current primary factor consideration when driving lamp loads. total value must less than ISC. Another convenient aspect this application LED. used denote existence system fault (overvoltage, current limiting, thermal shutdown).
Figure Instrument Panel Lamp Dimmer Control
0.01µF MC1455
1.0k 5.0V
1N4001
1.0k
Frequency 1N4001
1.0M Duty Cycle CMOS Input
Fast Turnoff Over Voltage Detect
Vout
Instrument Panel Lamps Thermal Shutdown
Current Limit Fault
1.0k 5.0V
MOTOROLA ANALOG DEVICE DATA
MC3392
OUTLINE DIMENSIONS
SUFFIX PLASTIC PACKAGE CASE 221A-06 (TO-220) ISSUE
NOTES: DIMENSIONING TOLERANCING ANSI Y14.5M, 1982. CONTROLLING DIMENSION: INCH. DIMENSION DEFINES ZONE WHERE BODY LEAD IRREGULARITIES ALLOWED. INCHES 0.570 0.620 0.380 0.405 0.160 0.190 0.025 0.035 0.142 0.147 0.095 0.105 0.110 0.155 0.018 0.025 0.500 0.562 0.045 0.060 0.190 0.210 0.100 0.120 0.080 0.110 0.045 0.055 0.235 0.255 0.000 0.050 0.045 0.080 MILLIMETERS 14.48 15.75 9.66 10.28 4.07 4.82 0.64 0.88 3.61 3.73 2.42 2.66 2.80 3.93 0.46 0.64 12.70 14.27 1.15 1.52 4.83 5.33 2.54 3.04 2.04 2.79 1.15 1.39 5.97 6.47 0.00 1.27 1.15 2.04
SEATING PLANE
SUFFIX PLASTIC PACKAGE CASE 314D-03 (TO-220) ISSUE
SEATING PLANE
NOTES: DIMENSIONING TOLERANCING ANSI Y14.5M, 1982. CONTROLLING DIMENSION: INCH. DIMENSION DOES INCLUDE INTERCONNECT (DAMBAR) PROTRUSION. DIMENSION INCLUDING PROTRUSION SHALL EXCEED 10.92 (0.043) MAXIMUM. INCHES 0.572 0.613 0.390 0.415 0.170 0.180 0.025 0.038 0.048 0.055 0.067 0.087 0.112 0.015 0.025 1.020 1.065 0.320 0.365 0.140 0.153 0.105 0.117 0.543 0.582 MILLIMETERS 14.529 15.570 9.906 10.541 4.318 4.572 0.635 0.965 1.219 1.397 1.702 2.210 2.845 0.381 0.635 25.908 27.051 8.128 9.271 3.556 3.886 2.667 2.972 13.792 14.783
0.356 (0.014)
MOTOROLA ANALOG DEVICE DATA
MC3392
OUTLINE DIMENSIONS
SUFFIX PLASTIC PACKAGE CASE 751G-02 SOP(8+8)L ISSUE
0.010 (0.25)
NOTES: DIMENSIONING TOLERANCING ANSI Y14.5M, 1982. CONTROLLING DIMENSION: MILLIMETER. DIMENSIONS INCLUDE MOLD PROTRUSION. MAXIMUM MOLD PROTRUSION 0.15 (0.006) SIDE. DIMENSION DOES INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL 0.13 (0.005) TOTAL EXCESS DIMENSION MAXIMUM MATERIAL CONDITION. MILLIMETERS 10.15 10.45 7.40 7.60 2.35 2.65 0.35 0.49 0.50 0.90 1.27 0.25 0.32 0.10 0.25 10.05 10.55 0.25 0.75 INCHES 0.400 0.411 0.292 0.299 0.093 0.104 0.014 0.019 0.020 0.035 0.050 0.010 0.012 0.004 0.009 0.395 0.415 0.010 0.029
0.010 (0.25)
SEATING PLANE
MOTOROLA ANALOG DEVICE DATA
MC3392
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MOTOROLA ANALOG DEVICE DATA MC3392/D
*MC3392/D*
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