Using minimize power dissipation maximize load efficiency, UDN2962W du

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Using minimize power dissipation maximize load efficiency, UDN2962W du

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2962 DUAL SOLENOID/MOTOR DRIVER
Using minimize power dissipation maximize load efficiency, UDN2962W dual driver recommended impact printer solenoids stepper motors. comprised source/ sink driver pairs rated continuous operation connected drive independent loads single load fullbridge configuration. Both drivers include output clamp/flyback diodes, input gain level shifting, voltage regulator single-supply operation, pulse-width modulated output-current control circuitry. Inputs compatible with most TTL, DTL, LSTTL, low-voltage CMOS PMOS logic. peak output current hysteresis each source/sink pair independently. Output current, threshold voltage, hysteresis user's selection external resistors. specified output-current trip level, source driver turns OFF. internal clamp diode then allows current flow without additional input from power supply. When lower current trip point reached, source driver turns back UDN2962W 12-pin single in-line power-tab package. ground potential needs insulation. highcurrent high-frequency applications, external heat sinking required.
Data Sheet 29319.12A*
DUAL SOLENOID/MOTOR DRIVER -PULSE-WIDTH MODULATED CURRENT CONTROL
GROUND SENSE SINK SOURCE SOURCE SINK SENSE
ABSOLUTE MAXIMUM RATINGS +150°C
Supply Voltage, Peak Output Current, IOUT Input Voltage Range, -0.3 +7.0 Package Power Dissipation, Graph Operating Temperature Range, -20°C +85°C Storage Temperature Range, -55°C +150°C
NOTE: Output current rating limited duty cycle, ambient temperature, heat sinking. Under conditions, exceed specified peak current junction temperature +150°C.
LOGIC LOGIC
Dwg. D-1001
FEATURES
Peak Output Min. Sustaining Voltage Internal Clamp Diodes TTL/PMOS/CMOS Compatible Inputs High-Speed Chopper
Always order complete part number:
UDN2962W
2962 DUAL SOLENOID/MOTOR DRIVER
FUNCTIONAL BLOCK DIAGRAM
(ONE DRIVERS)
SOURCE
LOAD SINK SENSE
(TYP.0.1
VREF
Dwg. D-1002
ALLOWABLE PACKAGE POWER DISSIPATION WATTS
2.0°C/W
TRUTH TABLE
VSENSE <VTHS >VTHS SOURCE DRIVER SINK DRIVER
3.0°C/W HEAT SINK 5.0°C/W
High
12°C/W HEAT SINK 14°C/W
FREE AIR, 38°C/W
TEMPERATURE
Dwg. GP-012B
Northeast Cutoff, 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright 1986, 1993, Allegro MicroSystems, Inc.
2962 DUAL SOLENOID/MOTOR DRIVER
ELECTRICAL CHARACTERISTICS +25°C, +150°C, VSENSE (unless otherwise noted).
Characteristic Supply Voltage Range Output Drivers Output Leakage Current ICEX VSOURCE VSINK Output Saturation Voltage VCE(SAT) Source Drivers, LOAD Source Drivers, LOAD Sink Drivers, ILOAD Sink Drivers, ILOAD Output Sustaining Voltage Output Current Regulation VCE(sus) IOUT IOUT ±3.0 VTHS VTHS VTHS Clamp Diode Forward Voltage Output Rise Time Output Fall Time Control Logic Logic Input Voltage VIN(1) VIN(0) Logic Input Current IIN(1) IIN(0) ITHS(ON) ITHS(HYS) VTHS /VSENSE Ratio Supply Current (Total Device) Propagation Delay Time (Resistive Load) VTHS SENSE VTHS 10.5 VSENSE 9.5, VTHS Trip Point, VTHS Outputs Outputs Open OUT, Turn OUT, Turn 100% VSENSE OUT*
Where VSENSE VTHS /9.5 NOTE: Negative current defined coming (sourcing) specified device pin.
Symbol Operating
Test Conditions
Min.
Limits Typ. Max.
Units
<-1.0 <1.0
-100 ±5.0
ILOAD 90%, Resistive Load ILOAD 10%, Resistive Load
-2.0
-100 10.5
2962 DUAL SOLENOID/MOTOR DRIVER
CIRCUIT DESCRIPTION APPLICATIONS INFORMATION
UDN2962W high-current driver intended free-running, pulse-width modulated solenoid driver. Circuit Description. operation, source sink drivers both turned level input. load current rises with time function load inductance, total circuit resistance, supply voltage sensed external sense resistor When load current reaches trip point (ITRIP comparator output goes high turns source driver. actual load current will peak slightly higher than ITRIP because internal logic switching delays. After source driver turned OFF, load current continues circulate through sink driver internal ground clamp diode. rate current decay function load inductance total circuit resistance. internal constant current sink reduces trip point (hysteresis) until decaying load current reaches lower threshold, when comparator output goes source driver again turned Load current again allowed rise trip point cycle repeats. Maximum load current hysteresis determined user. Determining Maximum Load Current Hysteresis. Trip current (ITRIP) determined function resistance threshold voltage, VTHS: ITRIP
Circuit Layout. prevent interaction between channels, each high-level power ground returns (the side sense resistors) must returned independently low-level signal ground (pin circuit common (pin then routed system ground. printed wiring board should utilize heavy ground plane. optimum performance, driver should soldered directly into board. power supply (VCC should decoupled with electrolytic capacitor close possible
SUPPLY
SYSTEM GROUND
Dwg. OP-001
TYPICAL WAVESHAPES
where VTHS SENSE
Hysteresis percentage determined resistance independent load current: VREF chopping frequency asynchronous function system circuit parameters, including load inductance, supply voltage, hysteresis setting, switching speed driver. Resistance determined VTHS VREF VTHS
SINK VSOURCE
TRIP =VTHS LOAD
VTHS
Dwg. WP-006
Note that VTHS REF, then
Northeast Cutoff, 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
2962 DUAL SOLENOID/MOTOR DRIVER
APPLICATIONS INFORMATION RESISTOR VALUE FUNCTION HYSTERESIS
RESISTOR VALUE FUNCTION PEAK LOAD CURRENT
VREF=
VREF
H=5%
HYSTERESIS, PERCENT
LOAD CURRENT, IMAX AMPERES
Dwg. A-12,417
Dwg. A-12,416
Dwg. D-1004
DETERMINE HYSTERESIS PEAK CURRENT NOTE: Each drivers includes internal logic delay prevent potentially destructive crossover currents within driver during phase changes. However, never simultaneously enable both inputs fullbridge configurations: destructive short-circuit ground will result.
2962 DUAL SOLENOID/MOTOR DRIVER
Dimensions Inches
(controlling dimensions)
1.260 1.240 0.020 0.775 0.765 0.245 0.225
0.180
0.055 0.045 0.155 0.145 0.135 0.100
0.140 0.365 0.570 0.540
INDEX AREA
0.290
0.065 0.035
0.030 0.020
0.100
±0.010
0.023 0.018
0.080 0.070
Dwg. MP-007
NOTES:
Lead thickness measured seating plane below. Lead spacing tolerance non-cumulative Exact body lead configuration vendor's option within limits shown. Lead gauge plane 0.030" below seating plane.
Northeast Cutoff, 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
2962 DUAL SOLENOID/MOTOR DRIVER
Dimensions Millimeters
(for reference only)
32.00 31.49 0.51 19.69 19.45 6.22 5.71
4.57
1.40 1.14 3.94 3.68 3.43 2.54
3.56 9.27 14.48 13.71
INDEX AREA
7.36
1.65 0.89
0.76 0.51
2.54
±0.254
0.59 0.45
2.03 1.77
Dwg. MP-007
NOTES:
Lead thickness measured seating plane below. Lead spacing tolerance non-cumulative Exact body lead configuration vendor's option within limits shown. Lead gauge plane 0.762 below seating plane.
2962 DUAL SOLENOID/MOTOR DRIVER
MOTOR DRIVERS SELECTION GUIDE
Function Output Ratings ±2.0 ±900 ±4.0 ±1.0 ±750 ±1.5 ±750 ±2.0 ±2.0 ±1.3 ±1.5 ±800 ±650 ±750 1.25 ±500 ±800 ±350 Part Number INTEGRATED CIRCUITS BRUSHLESS MOTORS 3-Phase Controller/Drivers Hall-Effect Latched Sensors 2-Phase Hall-Effect Sensor/Controller Hall-Effect Complementary-Output Sensor 2-Phase Hall-Effect Sensor/Driver 2-Phase Hall-Effect Sensor/Driver Hall-Effect Complementary-Output Sensor/Driver 3-Phase Back-EMF Controller/Driver 3-Phase Controller/DMOS Driver 3-Phase Back-EMF Controller/Driver Current-Controlled Dual Full Bridge Current-Controlled Dual Full Bridges Current-Controlled Dual Full Bridge Dual Full-Bridge Driver Current-Controlled Full Bridge Current-Controlled Full Bridge Current-Controlled Microstepping Full Bridges Current-Controlled Dual Full Bridge Current-Controlled Dual Full Bridge Current-Controlled Dual Full Bridge Unipolar Stepper-Motor Quad Driver Unipolar Stepper-Motor Translator/Driver Unipolar Stepper-Motor Quad Drivers Unipolar Microstepper-Motor Quad Driver Voice-Coil Motor Driver Voice-Coil Motor Driver Voice-Coil (and Spindle) Motor Driver 2936 2936-120 3175 3177 3235 3275 3625 3626 5275 8902-A 8925 8984 2916 2917 2918 2919 2998 3952 3953 3955 3957 3964 3966 3968 6219 2544 5804 7024 7029 7042 8932-A 8958 8984
INTEGRATED BRIDGE DRIVERS BIPOLAR STEPPER MOTORS
OTHER INTEGRATED CIRCUIT PMCM MOTOR DRIVERS
Current maximum specified test condition, voltage maximum rating. specification sustaining voltage limits over-current protection voltage limits. Negative current defined coming (sourcing) output. Complete part number includes additional characters indicate operating temperature range package style.
Allegro MicroSystems, Inc. reserves right make, from time time, such departures from detail specifications required permit improvements design products. information included herein believed accurate reliable. However, Allegro MicroSystems, Inc. assumes responsibility use; infringements patents other rights third parties which result from use.
Northeast Cutoff, 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000

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