OPERATING SUPPLY VOLTAGE TOTAL CURRENT SATURATION VOLTAGE OVERTEMPERAT
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DUAL FULL-BRIDGE DRIVER
OPERATING SUPPLY VOLTAGE TOTAL CURRENT SATURATION VOLTAGE OVERTEMPERATURE PROTECTION LOGICAL INPUT VOLTAGE (HIGH NOISE IMMUNITY)
Multiw att15 PowerSO20
DESCRIPTION L298 integrated monolithic circuit 15lead Multiwatt PowerSO20 packages. high voltage, high current dual full-bridge driver designed accept standardTTL logic levels drive inductive loads such relays, solenoids, stepping motors. enableinputs provided enableor disable deviceindependentlyof input signals. emitters lower transistors each bridge connected together corresponding external terminal used conBLOCK DIAGRAM
RDERING NUMBERS L298N (Multiwatt Vert.) L298HN (Multiwatt Horiz.) L298P (PowerSO20)
nectionof externalsensing resistor. Anadditional supply input provided that logic works lower voltage.
October 1998
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ABSOLUTE MAXIMUM RATINGS
Symb VI,Ven Power Supply Logic Supply Voltage Input Enable Voltage Peak Output Current (each Channel) Repetitive 100µs) -Repetitive (80% -20% off; 10ms) Operation Sensing Voltage Total Power Dissipation (Tcase 75°C) Junction Operating Temperature Storage Junction Temperature Parameter Value -0.3 Unit
Vsens Tstg,
CONNECTIONS (top view)
CURRENT SENSING OUTPUT OUTPUT INPUT ENABLE INPUT LOGIC SUPPLY VOLTAGE INPUT ENABLE INPUT SUPPLY VOLTAGE OUTPUT OUTPUT CURRENT SENSING
Multiwatt15
CONNECTED
D95IN240
Sense N.C. Input Enable Input
D95IN239
Sense N.C. Input Enable Input
PowerSO20
THERMAL DATA
Symb j-case j-amb Parameter Thermal Resistance Junction-case Thermal Resistance Junction-ambient Max. Max. werSO20 ltiwatt15 Unit °C/W °C/W
Mounted aluminum substrate
2/13
FUNCTIONS (refer block diagram)
MW.15 1;15 werSO 2;19 Name Sense Sense ction Between this ground connected sense resistor control current load. Outputs Bridge current that flows through load connected between these pins monitored Supply Voltage Power Output Stages. non-inductive 100nF capacitor must connected between this ground. Compatible Inputs Bridge Compatible Enable Input: state disables bridge (enable and/or bridge (enable Ground. Supply Voltage Logic Blocks. A100nF capacitor must connected between this ground. Compatible Inputs Bridge Outputs Bridge current that flows through load connected between these pins monitored Connected
6;11
8;14 1,10,11,20 13;15 16;17 3;18
Input Input Enable Enable Input Input N.C.
ELECTRICAL CHARACTERISTICS 42V; 25°C; unless otherwise specified)
Symbol Parameter Supply Voltage (pin Logic Supply Voltage (pin Quiescent Supply Current (pin Quiescent Current from (pin Input Voltage (pins Input High Voltage (pins Voltage Input Current (pins High Voltage Input Current (pins Enable Voltage (pins Enable High Voltage (pins Voltage Enable Current (pins High Voltage Enable Current (pins -0.6V 0.95 0.85 1.80 1.35 -0.6V -0.3 -0.3 Test nditions Operative Condition +2.5 Max. Unit
VCEsat Source Saturation Voltage VCEsat Sink Saturation Voltage VCEsat Vsens Total Drop Sensing Voltage (pins
3/13
ELECTRICAL CHARACTERISTICS (continued)
Symbol (Vi) (Vi) (Vi) (Vi) (Vi) (Vi) (Vi) (Vi) (Vi) (Ven) (Ven) (Ven) (Ven) (Ven) (Ven) (Ven) (Ven) Parameter Source Current Turn-off Delay Source Current Fall Time Source Current Turn-on Delay Source Current Rise Time Sink Current Turn-off Delay Sink Current Fall Time Sink Current Turn-on Delay Sink Current Rise Time Commutation Frequency Source Current Turn-off Delay Source Current Fall Time Source Current Turn-on Delay Source Current Rise Time Sink Current Turn-off Delay Sink Current Fall Time Sink Current Turn-on Delay Sink Current Rise Time Test nditions (2); (2); (2); (2); (3); (3); (3); (3); (2); (2); (2); (2); (3); (3); (3); (3); 0.25 0.35 0.25 Max. Unit
1)Sensing voltage µsec; steady state sens fig. fig. load must pure resistor.
Figure Typical Saturation Voltage Output Current.
Figure Switching Times Test Circuits.
Note INPUT Switching, ENABLESwitching,
4/13
Figure Source Current Delay Times Input Enable Switching.
Figure Switching Times Test Circuits.
Note INPUT Switching, ENABLE Switching,
5/13
Figure Sink Current Delay Times Input Enable Switching.
Figure Bidirectional Motor Control.
C=H;D=L C=H;D=H
nctio Turn Right Turn Left Fast Motor Stop Free Running Motor Stop
Don't care
C=X;D=C
High
6/13
Figure higher currents, outputs paralleled. Take care parallel channel with channel channel with channel
APPLICATION INFORMATION (Refer block diagram) 1.1. POWER OUTPUT STAGE Each input must connected source driving signals means very short path. TheL298integratestwo poweroutputstages(A power output stage bridge configuration Turn-On Turn-Off Before Turn-ON Supand outputs drive inductive load comply Voltageand beforeto Turnit OFF, Enableinmon differenzialmode, dependingon state must driven state. inputs. current that flows through load APPLICATIONS comes from bridge sense output shows bidirectional motor control Scheexternal resistor (RSA RSB.) allows detect inmatic Diagram which only bridge needed. tensity this current. external bridge diodes made 1.2. INPUT STAGE four fast recovery elements (trr nsec) that Each bridge driven means four gates inmust chosen possible which EnB. worst case load current. inputs bridge state when input sense outputvoltage used control high lowstate inputinhibitsthe bridge. current amplitude chopping inputs, proAll inputs compatible. vide overcurrent protection switching enable input. SUGGESTIONS brake function (Fast motor stop) requires that inductive capacitor, usually must Absolute Maximum Rating Amps must foreseen between both Vss, ground, never overcome. near possible pin. When large capacitor power supply from When repetitive peak current needed from second smaller must foreseen near load higher than Amps, paralleled configuraL298. tion chosen (See Fig.7). sense resistor, wire wound type, must external bridge diodes required when inbe grounded near negative pole that must ductive loads driven when inputs near I.C. chopped; Shottkydiodeswould bepreferred.
7/13
This solution drive until Amps operation until Amps repetitive peak current. OnFig shownthe driving twophasebipolar stepper motor needed signals drive inputs L298 generated, this example, from L297. shows example P.C.B. designed application Figure Phase Bipolar Stepper Motor Circuit. This circuit drives bipolar stepper motors with winding currents diodes fast types. shows second phase bipolar stepper motor control circuit where current controlled I.C. L6506.
Fast diodes
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Figure Suggested Printed Circuit Board Layout Circuit fig. (1:1 scale).
Figure Phase Bipolar Stepper Motor Control Circuit Using Current Controller L6506.
Rsense depend from load current
9/13
DIM. MIN. Dia1 21.9 21.7 17.65 17.25 10.3 2.65 4.25 4.63 3.65 4.55 5.08 17.5 10.7 22.2 22.1 0.49 0.66 1.02 17.53 19.6 20.2 22.5 22.5 18.1 17.75 10.9 4.85 5.53 3.85 0.862 0.854 0.695 0.679 0.406 0.104 0.167 0.182 0.075 0.075 0.144 0.179 0.200 0.689 0.421 0.874 0.870 1.27 17.78 0.55 0.75 1.52 18.03 0.019 0.026 0.040 0.690 0.772 0.795 0.886 0.886 0.713 0.699 0.429 0.114 0.191 0.218 0.102 0.102 0.152 0.050 0.700 TYP. MAX. 2.65 0.039 0.022 0.030 0.060 0.710 MIN. inch TYP. MAX. 0.197 0.104 0.063
OUTLINE MECHANICAL DATA
Multiwatt15
10/13
DIM. MIN. Dia1 2.65 3.65 17.25 10.3 20.57 18.03 2.54 17.5 10.7 5.28 2.38 3.85 0.104 0.075 0.075 0.144 17.75 10.9 0.679 0.406 0.49 0.66 1.14 17.57 19.6 20.2 0.810 0.710 0.100 0.689 0.421 0.208 0.094 0.114 0.102 0.102 0.152 0.699 0.429 1.27 17.78 TYP. MAX. 2.65 0.55 0.75 17.91 0.019 0.026 0.045 0.692 0.772 0.795 0.050 0.700 MIN. inch TYP. MAX. 0.197 0.104 0.063 0.022 0.030 0.055 0.705
OUTLINE MECHANICAL DATA
Multiwatt15
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TYP. inch TYP.
DIM.
MIN. 0.23 15.8 13.9
MAX. 0.53 0.32 14.5
MIN. 0.004 0.000 0.016 0.009 0.622 0.370 0.547
MAX. 0.142 0.012 0.130 0.004 0.021 0.013 0.630 0.386 0.570
OUTLINE MECHANICAL DATA
1.27 11.43 10.9 15.5 11.1 0.429 0.228 0.000 15.9 0.610 0.031 (max.) (max.)
0.050 0.450 0.437 0.114 0.244 0.004 0.626 0.043 0.043
JEDEC MO-166
0.394
include mold flash protrusions. Mold flash protrusions shall exceed 0.15 (0.006"). Critical dimensions: "E", "a3"
PowerSO20
DETAIL DETAIL
DETAIL
lead
DETAIL
Gage Plane 0.35
slug
BOTTOM VIEW
SEATING PLANE
(COPLANARITY)
PSO20MEC
12/13
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