e.,
MOTOROLA
SEMICONDUCTOR ~
TECHNICAL DATA -
CLOSED-LOOP BRUSHLESS MOTOR ADAPTER
The MC33039 is ahigh performance closed-loop speed control
adapter specifically designed for use in brush less dc motor control
systems. Implementation will allow precise speed regulation with-
out the need for amagnetic or optical tachometer. This device
contains three input buffers each with hysteresis for noise immu-
nity, three digital edge detectors, aprogrammable monostable,
and an internal shunt regulator. Also included is an inverteroutput
for use in systems that require conversion of sensor phasing.
Although this device is primarily intended for use with the
MC33034 brushless motor controller, it can be used cost effec-
tively in many other closed-loop speed control applications.
@Digital Detection of Each Input Transition for Improved Low .$~
Speed Motor Operation ~i<
:,,
....
.Inverter Output for Easy Conversion Between 60°/~00’%and
120°/2400 Sensor Phasing Conventions ,,:\,
,*.$i’!i<,
,:.’ ‘\..;\*$
.*.-
REPR~@k&k$lVE BLOCK DIAGRAM
I
Order this data sheet by MC33039/D
I
1
PSUFFIX
PLASTICPACKAGE
CASE626
DSUFFIX
PLASTICPACKAGE
CASE751
(S0-8)
PIN CONNECTIONS
Inputs
(Top View)
ORDERING INFORMATION
m
@MOTORO~INC., 1990 DS9736
MAXIM1lM RATINGS
------------ ... ... .. .----
Rating Symbol Value Unit
VCC Zener Current IZ(vcc) 30 mA
Logic Input Current (Pins 1, 2, 3) IIH 5.0 mA
Output Current (Pin 4, 5), Sink or Source lDRV 20 mA
Power Dissipation and Thermal Characteristics
Maximum Power Dissipation @TA =+85°C pD 650 mW
Thermal Resistance Junction to Air R~JA 100 “Clw
Operating Junction Temperature TJ +150 ‘c
Operating Ambient Temperature Range TA –40 to +85 ‘c
fi. .- --..-- .-
=Iorage Iemperature Kange IStq I–tibto +15UI “c
3.60
4.20
20
205
—
1.0
0.9
– 80
–5.0
– 380
–5.0
v
pA
v
3.95 I4.20 I
L
4,75 —
0.25 0.50
0.25 0.50
35 60
225 245
mA
ps
Motorola reserves the right to make changea without further notice to any products herein to improve reliability, function or design. Motorola
does not assume anv Iiabilitv arising out of the application or use of any product or circuit described herein; neither does it convey anv license
under its patent rights nor the rights of others. Motorola products are not authorized for use as components in life support devices or svstems
intended for surgical implant into the body or intended to support or sustain life. Buyer agrees to notify Motorola of anv such intended end use
whereupon Motorole shall determine availability and suitability of its product or products for the use intended. Motorola and @are registered
trademarks of Motorola, Inc. Motorola, Inc. is an Equal Employment Opportunity/Affirmative Action Employer,
MOTOROLA MC33039
2
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0
Q,,
FIGURE 1—TYPICAL THREE PHASE, SIX STEP MOTOR APPLICATION
Rotor Electrical Position (Degrees)
o60 120 180 240 300 360
I I I I [I I I 4p[6p 17p
[+A II II II 11
6W Sensor
Electrical
Phasing
Input
I
12W Sensor
Electrical
Phasing
Input
Latch
“Set” Input
RTICT
fout output
[II I
[Ill
nnin
Vth =0.67 VCC
I,1, ,1111 Vout(AVG)
OPERATING DE~:~@DN
The MC33#$J~;&ovides an economical method of
~\~:\
implementi~.ghsed-loop speed control of brush less dc
motor&k~&~,,~nating the need for amagnetic or optical
tach,o~~t~~. ‘Shown in the timing diagram of Figure 1,
th~~~,~~k~:&’Inputs (Pins 1, 2, 3) monitor the brush less
~wlo~-rotor position sensors. Each sensor signal tran-
$~~~~ is digitally detected; OR’ed at the Latch ‘Set’ Input,
ahd causes CT to discharge. Acorresponding output
pulse is generated at fout (Pin 5) of adefined amplitude,
and programmable width determined by the values
selected for RT and CT (Pin 6). The average voltage of
the output pulse train increases with motor speed.
When fed through alow pass filter or integrator, adc
voltage proportional to speed is generated. Figure 2
shows the proper connections for atypical closed loop
Speed
application using the MC33034 brushless motor con-
troller. Constant speed operation down to 100 RPM is
possible with economical three phase four pole motors.
The 4A inverter output (Pin 4) is used in systems
where the controller and motor sensor phasing con-
ventions are not compatible. Amethod of converting
from either convention to the other is shown in Figure 3.
For amore detailed explanation of this subject, refer to
the text above Figure 39 on the MC33034 data sheet,
The output pulse amplitude VOH is constant with tern-
perature and controlled by the supply voltage on VCC
(Pin 8). Operation down to 5.5 Vis guaranteed over
temperature. For systems without aregulated power
supply, an internal 8.25 Vshunt regulator is provided.
MC33039 MOTOROLA
s
FIGURE 2—TYPICAL CLOSED-LOOP SPEED CONTROL APPLICATION
.————
7
1111{ —
I t II
L–________J
M.,.,
—I
~MC33039P
6,
&’
~C33034P60
——— —
[’ \
dA 4
From Sensors
lzo~ or 240. :! ~
*B Pos
Electrical
Phasing +DEC
6
*C7 1 3
1. +
4—i —Ill
rMC33039P
———
MOTOROLA4
FIGURE 4—‘fOut PULSE WIDTH versus TIMING RESISTOR FIGURE 5—fOut, PULSE WIDTH CHANGE
versus TEMPERATURE
.E Vcc =6.25v\~I I I I I I I III
=‘TA =25°C I I I I I I I I Ml
I I III I I I 1- 1I
I I 1X1 II I II I I 1>
IIIIII I II
0.01t,I , I , , , , I , 1
, ,
xl -I , , 1 1 @11 1 111 1
2,0 20 200
RT,TIMING RESISTOR(kQj
FIGURE 6—fOut PULSE WIDTH CHANGE
versus SUPPLY VOLTAGE
+4.0[I I I I I I I I
o4.0 8.0 12 16
10,OUTPUT LOAD CURRENT (mA)
H
I I III
TA = – 400C
.0
002.0 4,0 6.0 8.0 10
Vcc, SUPPLY VOLTAGE (V)
FIGURE 9—fOut, SATURATION CHANGE
versus TEMPERATURE
TA, AMBIENT TEMPERATURE (°C)
MOTOROLA
5MC33039
THERMAL INFORMATION
The maximum power consumption an integrated TJ(max) =Maximum operating Junction Temperature
circuit can tolerate at agiven operating ambient as listed in the Maximum Ratings Section
temperature, can be found from the equation: TA =Maximum Desired Operating Ambient
TJ(max) –TA
PD(TA) =R8JA(TYP)
Where: PD(TA) =Power Dissipation allowable at a
given operating ambient temperature.
,. Tern peratu re
RgJA(Typ) =Typical Thermal Resistance Junction to
Ambient ,:!$,
OUTLINE DIMENSIONS
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JAPAN: Nippon Motorola Ltd.; 3-20-1 Minamiazabu, Minato-ku, Tokyo 106 Japan.
o
EMMOTOROLA
MC33039
,0833-2 ,,,,,,” ,, “SA ,/90 ,WE.IAL ,,,”0 ,7,,6, ,8,000 ,,, Y,,,*
