Phase A
Phase B
Phase C
H
B
H
C
H
A
Lower Power
Current Sense
Signal Ground
Power Ground
Hall Feedback
Logic
and
Timing
Circuitry
High and
Low Side
Drivers
and
MOSFETs
3 Phase Brushless
Motor
CMI 5015-28
Vm
Vcc Output
FWD/REV
Speed Control
GND
Vm
N
N
S
S
(14) Power Ground
+Vm
Phase A
Phase B
Phase C
Speed (1)
cw/ccw
+V
cc
H
A
H
B
H
C
N/C
Signal Ground
+12.0 Volts
GND
50 K Ohm
Typical Uses:
Packaged in a miniature hermetic module, this
device is ideally suited for high performance 3-Phase
Brushless Motor Control Applications. Among the
many applications are: Robotics, electromechanical
valve assemblies, battery operated motors, fans and
blowers, cryogenic coolers, and battery operated
vehicles.
The CMI 5015-28 operates over the temperature
of -55
C and +125
C. Custom designs are available
upon request.
CMI
3 PHASE BRUSHLESS DC MOTOR
CONTROL DRIVER
The CMI 5015-28 motor control module is specifically
designed for operating both fractional and integral
horsepower motors. This unique module operates from
a single input supply ranging from +18 to +35 Volts with
output capabilities up to 20 Amps continuous current and
peak currents of 45 Amps. Housed in a metal hermetic
package this module is applicable to a wide range of
environmental usages.
Designed with the user in mind this plug and play
module is easy to use. The circuit uses the latest in ASIC
technology for commutation, cross conduction protection,
automatic braking, under voltage lockout and cycle-by-
cycle current limiting. It also contains a temperature
61 Union St. Attleboro Massachusetts 02703
Phone (508) 226-6969 Fax (508) 226-0938 E-mail sales@cmodules.com
Description:
CMI
compensated voltage reference.
The high efficiency "N" Channel MOSFET output
stage, driven with a custom high side driver, allows true
low to zero speed operation without the loss of the high
side voltages. A unique low loss current sensing circuit
and an internal bus capacitor eliminate the need for
large external components.
The CMI 5015-28 incorporates an internal reference
that allows the module to operate off a single supply as
low as +18 Volts while supplying the maximum current
to the output stage. Standard electrical sensor phasing
is 60
with a factory wiring option of 120
.
CMI 5015-28 Features:
Single Supply Operation
Low Loss Current Sensing
Under Voltage Lockout
Automatic Brake Actuation
100 mA +15 Volt Reference
Forward / Reverse Control
Thermal Shutdown
Internal Bus Capacitor
-55
C to +125
C Operation
CMI
CMI
61 Union St. Attleboro Massachusetts 02703
Phone (508) 226-6969 Fax (508) 226-0938 E-mail sales@cmodules.com
Application Notes:
Designed with the user in mind, this plug and play
module requires a single +18.0 to +32.0 Volt power
supply to operate a 3 Phase DC Brushless Motor. Fig 2
illustrates a typical application using the CMI 5015-28
Controller. Three 15 Volt CMOS compatible open
collector hall devices are required for commutation.
The internal +15.0 Volt Reference is capable of supplying
up to 100mA and is more than adequate for the Hall
devices and additional driver circuitry.
Care should be taken in connecting the Analog
ground (pin 9) and should only be used as low current
reference. Although connected internally this pin
cannot handle excessive current.
A 30
F Low ESR Bus Capacitor is provided
internally and should be adequate for most
applications, however, at user discretion additional
capacitance can be added externally when bus leads
are highly inductive.
Mechanically the unit should be mounted to a heat
sink using either silicon grease or a thermal pad.
Recommended hardware are #6 Washers and
6-32 / 6-40 socket head cap screws tightened to a
minimum of 30 in-lbs. of torque.
Fig. 2. Typical Application Circuit
CMI has made every effort to insure the accuracy of this specification. However, no responsibility is assumed for possible omissions and or inaccuracies. CMI reserves
the right to make changes without further notice to this specification to improve reliability, function, or design. Changes and additions made after the publication of this data
sheet will be reflected in updated sheets. CMI does not assume any liability arising out of the application or use of circuit described herein; neither does it convey any license
under its patent rights, nor the rights of others.
1999 Composite Modules Incorporated
COMPOSITE MODULES, INC.
COMPOSITE MODULES, INC.
CMI
CMI 5015-28
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CMI 5015-28
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