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PDF 2962 Data sheet ( Hoja de datos )
| Número de pieza | 2962 | |
| Descripción | DUAL SOLENOID/MOTOR DRIVER .PULSE-WIDTH MODULATED CURRENT CONTROL | |
| Fabricantes | Allegro MicroSystems | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de 2962 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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2962
DUAL SOLENOID/MOTOR DRIVER
—PULSE-WIDTH MODULATED CURRENT CONTROL
GROUND
IN A
SENSE A
SINK A
SOURCE A
THS A
V CC
SOURCEB
SINK B
SENSEB
IN B
THSB
Dwg. No. D-1001
Using PWM to minimize power dissipation and maximize load
efficiency, the UDN2962W dual driver is recommended for impact
printer solenoids and stepper motors. It is comprised of two source/
sink driver pairs rated for continuous operation to ±3 A. It can be
connected to drive two independent loads or a single load in the full-
bridge configuration. Both drivers include output clamp/flyback
diodes, input gain and level shifting, a voltage regulator for single-
supply operation, and pulse-width modulated output-current control
circuitry. Inputs are compatible with most TTL, DTL, LSTTL, and
low-voltage CMOS or PMOS logic.
The peak output current and hysteresis for each source/sink pair is
set independently. Output current, threshold voltage, and hysteresis are
set by the user’s selection of external resistors. At the specified output-
current trip level, the source driver turns off. The internal clamp diode
then allows current to flow without additional input from the power
supply. When the lower current trip point is reached, the source driver
turns back on.
The UDN2962W is in a 12-pin single in-line power-tab package.
The tab is at ground potential and needs no insulation. For high-
current or high-frequency applications, external heat sinking may be
required.
ABSOLUTE MAXIMUM RATINGS
at TJ ≤ +150°C
Supply Voltage, VCC . . . . . . . . . . . . . . 45 V
Peak Output Current, IOUT . . . . . . . . . ±4 A
Input Voltage Range,
VIN . . . . . . . . . . . . . . . -0.3 V to +7.0 V
Package Power Dissipation,
PD . . . . . . . . . . . . . . . . . . . See Graph
Operating Temperature Range,
TA . . . . . . . . . . . . . . . . -20°C to +85°C
Storage Temperature Range,
TS . . . . . . . . . . . . . . . -55°C to +150°C
NOTE: Output current rating may be limited by
duty cycle, ambient temperature, and heat
sinking. Under any set of conditions, do not
exceed the specified peak current and a junction
temperature of +150°C.
FEATURES
I 4 A Peak Output
I 45 V Min. Sustaining Voltage
I Internal Clamp Diodes
I TTL/PMOS/CMOS Compatible Inputs
I High-Speed Chopper
Always order by complete part number: UDN2962W .
1 page  
2962
DUAL PWM
SOLENOID/MOTOR DRIVER
APPLICATIONS INFORMATION
RESISTOR RH VALUE
AS A FUNCTION OF HYSTERESIS
RESISTOR RT VALUE
AS A FUNCTION OF PEAK LOAD CURRENT
25 25
20 VREF= 5 V
15
10
5
20
VREF = 5V
RS = 0.1Ω
15
10
5
H=2H5=H%2=01%5%
H=10%
H=5%
00
0 20 40 60 80 100 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
HYSTERESIS, H, IN PERCENT
LOAD CURRENT, IMAX , IN AMPERES
Dwg. No. A-12,417
Dwg. No. A-12,416
RH AND RT DETERMINE HYSTERESIS AND PEAK CURRENT
NOTE: Each of the drivers includes an internal logic delay to prevent
potentially destructive crossover currents within the driver during phase
changes. However, never simultaneously enable both inputs in the full-
bridge configurations: A destructive short-circuit to ground will result.
www.allegromicro.com
Dwg. No. D-1004
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet 2962.PDF ] | |
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