UDN2936W-120 Allegro Micro Systems, Inc., UDN2936W-120 Datasheet

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UDN2936W-120

Manufacturer Part Number
UDN2936W-120
Description
3-phase brushless DC motor controller/driver
Manufacturer
Allegro Micro Systems, Inc.
Datasheet

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Supply Voltage, V
Output Current, I
Input Voltage Range, V
Threshold Voltage, V
Package Power Dissipation,
Operating Temperature Range,
Storage Temperature Range,
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.
(continuous) . . . . . . . . . . . . . . . .
(peak) . . . . . . . . . . . . . . . . . . . . .
P
T
T
D
A
S
. . . . . . . . . . . . . . . . -55 C to +150 C
. . . . . . . . . . . . . . . . -20 C to +85 C
. . . . . . . . . . . . . . . . . . . See Graph
OUT
BB
THS
. . . . . . . . . . . . . . . 45 V
IN
. . . . . . . . . . . . 15 V
. . . -0.3 V to 15 V
2.0 A
3.0 A
2936
mutation and drive for three-phase brushless dc motors. Each of the
three outputs are rated at 45 V and 2 A ( 3 A peak), and include
internal ground clamp and flyback diodes. The driver also features
internal commutation logic, PWM current control, and thermal shut-
down protection.
linear Hall effect sensors. The commutating logic is programmed for
120 electrical separation. The UDN2936W-120 can replace the
original UDN2936W (60 electrical separation) by simply adding an
inverter at the H
current through an external sense resistor and pulse-width modulating
the source drivers. Voltage thresholds and hysteresis can be externally
set by the user. If desired, internal threshold and hysteresis defaults
(300 mV, 7.5 percent) can be used. The UDN2936W-120 also includes
braking and direction control. Internal protection circuitry prevents
crossover current when braking or changing direction.
and +85 C. To order, change the prefix from ‘UDN’ to ‘UDQ’.
supplied in 12-pin single in-line power-tab package. An external heat
sink may be required for high-current applications. The tab is at
ground potential and needs no insulation.
Always order by complete part number, e.g., UDN2936W-120 .
3-PHASE BRUSHLESS DC MOTOR
10 V to 45 V Operation
Internal Clamp Diodes
Internal PWM Current Control
120 Commutation Decoding Logic
Thermal Shutdown Protection
Compatible with Single-Ended or Differential Hall-Effect Sensors
Braking and Direction Control
Combining logic and power, the UDN2936W-120 provides com-
The UDN2936W-120 is compatible with single-ended digital or
The UDN2936W-120 is also available for operation between -40 C
For maximum power-handling capability, the UDN2936W-120 is
3 A Peak Output Current
2
input. Current control is accomplished by sensing
-120
CONTROLLER/DRIVER

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UDN2936W-120 Summary of contents

Page 1

... Voltage thresholds and hysteresis can be externally set by the user. If desired, internal threshold and hysteresis defaults (300 mV, 7.5 percent) can be used. The UDN2936W-120 also includes braking and direction control. Internal protection circuitry prevents crossover current when braking or changing direction. ...

Page 2

BRUSHLESS DC MOTOR CONTROLLER/DRIVER 115 Northeast Cutoff, Box 15036 W Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1985, 2002 Allegro MicroSystems, Inc. ...

Page 3

C/W HEAT SINK C/W HEAT SINK C FREE AIR C 100 TEMPERATURE IN C www.allegromicro.com R = 2.0 C/W JT ...

Page 4

BRUSHLESS DC MOTOR CONTROLLER/DRIVER (Resistive Load) (Resistive Load) 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Continued next page... ...

Page 5

BRUSHLESS DC MOTOR CONTROLLER/DRIVER ...

Page 6

... S be easily replaced with a UDN2936W-120 by inserting an inverter (two resistors and a 2N3904 or 2N2222) between the H Hall sensor and pin 8 of the UDN2936W-120, as shown in 2 the figure on the next page extra inverter is available, be certain that a pull-up for the Hall sensor is provided. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 > ...

Page 7

... V DIRECTION OUT 0 A – + OUT 0 B – + OUT 0 C – SENSOR H2 CUT X 2N2222 OR 2N3904 www.allegromicro.com UDN2936W-120 +6 – +2.5 V Dwg. EP-071 2936 3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER t d Dwg. WM-002-1 -120 Dwg. No. W-193 ...

Page 8

BRUSHLESS DC MOTOR CONTROLLER/DRIVER 0.020 INDEX AREA 1 0.065 0.035 1.260 1.240 0.775 0.245 0.765 0.225 0.140 0.365 12 0.030 0.020 0.100 0.010 NOTES: 1. Lead thickness is measured at seating plane or below. 2. Lead spacing ...

Page 9

INDEX AREA 1 1.65 0.89 The products described here are manufactured under one or more U.S. patents or U.S. patents pending. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications ...

Page 10

BRUSHLESS DC MOTOR CONTROLLER/DRIVER * Current is maximum specified test condition, voltage is maximum rating. See specification for sustaining voltage limits or over-current protection voltage limits. Negative current is defined as coming out of (sourcing) the output. ...

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