MC33033
SEMICONDUCTOR
TECHNICAL DATA
BRUSHLESS DC
MOTOR CONTROLLER
DW SUFFIX
PLASTIC PACKAGE
CASE 751D
(SO20L)
PIN CONNECTIONS
Order this document by MC33033/D
P SUFFIX
PLASTIC PACKAGE
CASE 738
AT
BT
Top Drive
Output
12
Bottom
Drive
Outputs
11
(Top View)
13
14
15
16
17
10
9
8
7
6
5
Sensor
Inputs
4
Error Amp
Inverting Input
Error Amp
Non Inverting Input
Oscillator
Reference Output
SC
SB
SA
60
/120
Select
Fwd/Rev
Error Amp Out/
PWM Input
Current Sense
Non Inverting Input
Gnd
CT
18
19
BB
CB
3
20
Output Enable
2
AB
1
VCC
20
1
20
1
1
MOTOROLA ANALOG IC DEVICE DATA
Brushless DC
Motor Controller
The MC33033 is a high performance second generation, limited feature,
monolithic brushless dc motor controller which has evolved from Motorola
s
full featured MC33034 and MC33035 controllers. It contains all of the active
functions required for the implementation of open loop, three or four phase
motor control. The device consists of a rotor position decoder for proper
commutation sequencing, temperature compensated reference capable of
supplying sensor power, frequency programmable sawtooth oscillator, fully
accessible error amplifier, pulse width modulator comparator, three open
collector top drivers, and three high current totem pole bottom drivers ideally
suited for driving power MOSFETs. Unlike its predessors, it does not feature
separate drive circuit supply and ground pins, brake input, or fault output
signal.
Included in the MC33033 are protective features consisting of
undervoltage lockout, cyclebycycle current limiting with a selectable time
delayed latched shutdown mode, and internal thermal shutdown.
Typical motor control functions include open loop speed, forward or
reverse direction, and run enable.The MC33033 is designed to operate
brushless motors with electrical sensor phasings of 60
/300
or 120
/240
,
and can also efficiently control brush dc motors.
10 to 30 V Operation
Undervoltage Lockout
6.25 V Reference Capable of Supplying Sensor Power
Fully Accessible Error Amplifier for Closed Loop Servo Applications
High Current Drivers Can Control External 3Phase MOSFET Bridge
CycleByCycle Current Limiting
Internal Thermal Shutdown
Selectable 60
/300
or 120
/240
Sensor Phasings
Also Efficiently Control Brush DC Motors with External MOSFET
HBridge
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
MC33033DW
TA = 40
to + 85
C
SO20L
MC33033P
TA = 40
to + 85
C
Plastic DIP
Motorola, Inc. 1996
Rev 3
MC33033
2
MOTOROLA ANALOG IC DEVICE DATA
Motor
Enable
Q
S
CT
R
RT
Oscillator
Error Amp
PWM
Thermal
Shutdown
Reference
Regulator
Lockout
Undervoltage
VCC
FWR/REV
Q
R
S
Faster
S
S
VM
Speed
Set
This device contains 266 active transistors.
Representative Schematic Diagram
Rotor
Position
Decoder
Output
Buffers
Current Sense
60
/120
N
N
MC33033
3
MOTOROLA ANALOG IC DEVICE DATA
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Power Supply Voltage
VCC
30
V
Digital Inputs (Pins 3, 4, 5, 6, 18, 19)
Vref
V
Oscillator Input Current (Source or Sink)
IOSC
30
mA
Error Amp Input Voltage Range
(Pins 9, 10, Note 1)
VIR
0.3 to Vref
V
Error Amp Output Current
(Source or Sink, Note 2)
IOut
10
mA
Current Sense Input Voltage Range
VSense
0.3 to 5.0
V
Top Drive Voltage (Pins 1, 2, 20)
VCE(top)
40
V
Top Drive Sink Current (Pins 1, 2, 20)
ISink(top)
50
mA
Bottom Drive Output Current
(Source or Sink, Pins 15,16, 17)
IDRV
100
mA
Power Dissipation and Thermal Characteristics
P Suffix, DualInLine, Case 738
Maximum Power Dissipation @ TA = 85
C
PD
867
mW
Thermal Resistance, JunctiontoAir
R
JA
75
C/W
DW Suffix, Surface Mount, Case 751D
Maximum Power Dissipation @ TA = 85
C
PD
619
mW
Thermal Resistance, JunctiontoAir
R
JA
105
C/W
Operating Junction Temperature
TJ
150
C
Operating Ambient Temperature Range
TA
40 to + 85
C
Storage Temperature Range
Tstg
65 to +150
C
ELECTRICAL CHARACTERISTICS
(VCC = 20 V, RT = 4.7 k, CT = 10 nF, TA = 25
C, unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
REFERENCE SECTION
Reference Output Voltage (Iref = 1.0 mA)
TA = 25
C
TA = 40
to + 85
C
Vref
5.9
5.82
6.24
6.5
6.57
V
Line Regulation (VCC = 10 V to 30 V, Iref = 1.0 mA)
Regline
1.5
30
mV
Load Regulation (Iref = 1.0 mA to 20 mA)
Regload
16
30
mV
Output ShortCircuit Current (Note 3)
ISC
40
75
mA
Reference Under Voltage Lockout Threshold
Vth
4.0
4.5
5.0
V
ERROR AMPLIFIER
Input Offset Voltage (TA = 40
to + 85
C)
VIO
0.4
10
mV
Input Offset Current (TA = 40
to + 85
C)
IIO
8.0
500
nA
Input Bias Current (TA = 40
to + 85
C)
IIB
46
1000
nA
Input Common Mode Voltage Range
VICR
(0 V to Vref)
V
Open Loop Voltage Gain (VO = 3.0 V, RL = 15 k)
AVOL
70
80
dB
Input Common Mode Rejection Ratio
CMRR
55
86
dB
Power Supply Rejection Ratio (VCC = 10 V to 30 V)
PSRR
65
105
dB
Output Voltage Swing
High State (RL = 15 k to Gnd)
Low State (RL = 17 k to Vref)
VOH
VOL
4.6
5.3
0.5
1.0
V
NOTES: 1. The input common mode voltage or input signal voltage should not be allowed to go negative by more than 0.3 V.
2. The compliance voltage must not exceed the range of 0.3 to Vref.
3. Maximum package power dissipation limits must be observed.
MC33033
4
MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS
(continued) (VCC = 20 V, RT = 4.7 k, CT = 10 nF, TA = 25
C, unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
OSCILLATOR SECTION
Oscillator Frequency
fOSC
22
25
28
kHz
Frequency Change with Voltage (VCC = 10 V to 30 V)
fOSC/
V
0.01
5.0
%
Sawtooth Peak Voltage
VOSC(P)
4.1
4.5
V
Sawtooth Valley Voltage
VOSC(V)
1.2
1.5
V
LOGIC INPUTS
Input Threshold Voltage (Pins 3, 4, 5, 6, 18, 19)
High State
Low State
VIH
VIL
3.0
2.2
1.7
0.8
V
Sensor Inputs (Pins 4, 5, 6)
High State Input Current (VIH = 5.0 V)
Low State Input Current (VIL = 0 V)
IIH
IIL
150
600
70
337
20
150
A
Forward/Reverse, 60
/120
Select and Output Enable
(Pins 3, 18, 19)
High State Input Current (VIH = 5.0 V)
Low State Input Current (VIL = 0 V)
IIH
IIL
75
300
36
175
10
75
A
CURRENTLIMIT COMPARATOR
Threshold Voltage
Vth
85
101
115
mV
Input Common Mode Voltage Range
VICR
3.0
V
Input Bias Current
IIB
0.9
5.0
A
OUTPUTS AND POWER SECTIONS
Top Drive Output Sink Saturation (ISink = 25 mA)
VCE(sat)
0.5
1.5
V
Top Drive Output OffState Leakage (VCE = 30 V)
IDRV(leak)
0.06
100
A
Top Drive Output Switching Time (CL = 47 pF, RL = 1.0 k)
Rise Time
Fall Time
tr
tf
107
26
300
300
ns
Bottom Drive Output Voltage
High State (VCC = 30 V, Isource = 50 mA)
Low State (VCC = 30 V, Isink = 50 mA)
VOH
VOL
(VCC 2.0)
(VCC 1.1)
1.5
2.0
V
Bottom Drive Output Switching Time (CL = 1000 pF)
Rise Time
Fall Time
tr
tf
38
30
200
200
ns
Under Voltage Lockout
Drive Output Enabled (VCC Increasing)
Hysteresis
Vth(on)
VH
8.2
0.1
8.9
0.2
10
0.3
V
Power Supply Current
ICC
15
22
mA
MC33033
5
MOTOROLA ANALOG IC DEVICE DATA
24
V O
, OUTPUT
VOL
T
AGE
(V)
V O
, OUTPUT
VOL
T
AGE
(V)
5.0
s/DIV
AV = +1.0
No Load
TA = 25
C
4.5
3.0
1.5
1.0
s/DIV
AV = +1.0
No Load
TA = 25
C
3.05
3.0
2.95
Gnd
Vref
IO, OUTPUT LOAD CURRENT (mA)
f, FREQUENCY (Hz)
56
1.0 k
220
200
180
160
140
120
100
80
60
24
16
8.0
0
8.0
16
32
40
48
10M
1.0 M
100 k
10 k
40
240
A
VOL
, OPENLOOP
VOL
T
AGE GAIN (dB)
EXCESS PHASE (DEGREES),
Phase
Gain
TA, AMBIENT TEMPERATURE (
C)
55
4.0
2.0
0
2.0
125
4.0
100
75
50
25
0
25
f OSC
OSCILLA
T
OR
FREQUENCY
CHANGE (%)
,
100
1.0
RT, TIMING RESISTOR (k
)
1000
100
10
0
10
f OSC
OSCILLA
T
OR FREQUENCY
(kHz)
,
Figure 1. Oscillator Frequency versus
Timing Resistor
Figure 2. Oscillator Frequency Change
versus Temperature
Figure 3. Error Amp Open Loop Gain and
Phase versus Frequency
Figure 4. Error Amp Output Saturation
Voltage versus Load Current
Figure 5. Error Amp SmallSignal
Transient Response
Figure 6. Error Amp LargeSignal
Transient Response
0
1.0
2.0
0
0.8
1.6
1.6
0.8
5.0
4.0
3.0
0
V
sat
, OUTPUT
SA
TURA
TION VOL
T
AGE
(V)
VCC = 20 V
TA = 25
C
VCC = 20 V
RT = 4.7 k
CT = 10 nF
Source Saturation
(Load to Ground)
VCC = 20 V
TA = 25
C
VCC = 20 V
VO = 3.0 V
RL = 15 k
CL = 100 pF
TA = 25
C
Sink Saturation
(Load to Vref)
CT = 1.0 nF
CT = 10 nF
CT = 100 nF
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