MC33035, NCV33035
Brushless DC
Motor Controller
The MC33035 is a high performance second generation monolithic
brushless DC motor controller containing all of the active functions
required to implement a full featured open loop, three or four phase
motor control system. This device consists of a rotor position decoder
for proper commutation sequencing, temperature compensated
reference capable of supplying sensor power, frequency
programmable sawtooth oscillator, three open collector top drivers,
and three high current totem pole bottom drivers ideally suited for
driving power MOSFETs.
Also included are protective features consisting of undervoltage
lockout, cycle−by−cycle current limiting with a selectable time
delayed latched shutdown mode, internal thermal shutdown, and a
unique fault output that can be interfaced into microprocessor
controlled systems.
Typical motor control functions include open loop speed, forward or
reverse direction, run enable, and dynamic braking. The MC33035 is
designed to operate with electrical sensor phasings of 60°/300° or
120°/240°, and can also efficiently control brush DC motors.
Features
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P SUFFIX
PLASTIC PACKAGE
CASE 724
24
1
DW SUFFIX
PLASTIC PACKAGE
CASE 751E
(SO−24L)
24
1
PIN CONNECTIONS
Top Drive
Output
B
T
1
A
T
2
Fwd/Rev
S
A
Sensor
Inputs
S
B
S
C
Output Enable
Reference Output
Current Sense
Noninverting Input
3
4
5
6
7
8
9
24 C
T
23 Brake
22 60°/120° Select
21 A
B
20 B
B
19 C
B
18 V
C
17 V
CC
16 Gnd
15
Current Sense
Inverting Input
Bottom
Drive
Outputs
•
•
•
•
•
•
•
•
•
•
•
•
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 3−Phase MOSFET
Bridge
Cycle−By−Cycle Current Limiting
Pinned−Out Current Sense Reference
Internal Thermal Shutdown
Selectable 60°/300° or 120°/240° Sensor Phasings
Can Efficiently Control Brush DC Motors with External MOSFET
H−Bridge
NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
Pb−Free Packages are Available
Oscillator 10
Error Amp
11
Noninverting Input
Error Amp
Inverting Input 12
(Top View)
14 Fault Output
13
Error Amp Out/
PWM Input
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 27 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 27 of this data sheet.
©
Semiconductor Components Industries, LLC, 2006
1
April, 2006 − Rev. 8
Publication Order Number:
MC33035/D
MC33035, NCV33035
Representative Schematic Diagram
V
M
Fault
4
5
6
Fwd/Rev
60°/120°
Enable
V
in
3
22
7
17
18
Reference
Regulator
8
Speed
Set
Faster
R
T
13
21
11
12
PWM
R
S
C
T
10
Oscillator
S
R
Q
9
15
16
23
Brake
Current Sense
Reference
Q
19
Error Amp
Thermal
Shutdown
20
Undervoltage
Lockout
Output
Buffers
24
Motor
Rotor
Position
Decoder
14
S
N
N
S
2
1
This device contains 285 active transistors.
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2
MC33035, NCV33035
MAXIMUM RATINGS
Rating
Power Supply Voltage
Digital Inputs (Pins 3, 4, 5, 6, 22, 23)
Oscillator Input Current (Source or Sink)
Error Amp Input Voltage Range (Pins 11, 12, Note 1)
Error Amp Output Current (Source or Sink, Note 2)
Current Sense Input Voltage Range (Pins 9, 15)
Fault Output Voltage
Fault Output Sink Current
Top Drive Voltage (Pins 1, 2, 24)
Top Drive Sink Current (Pins 1, 2, 24)
Bottom Drive Supply Voltage (Pin 18)
Bottom Drive Output Current (Source or Sink, Pins 19, 20, 21)
Power Dissipation and Thermal Characteristics
P Suffix, Dual In Line, Case 724
Maximum Power Dissipation @ T
A
= 85°C
Thermal Resistance, Junction−to−Air
DW Suffix, Surface Mount, Case 751E
Maximum Power Dissipation @ T
A
= 85°C
Thermal Resistance, Junction−to−Air
Operating Junction Temperature
Operating Ambient Temperature Range (Note 3)
MC33035
NCV33035
Symbol
V
CC
−
I
OSC
V
IR
I
Out
V
Sense
V
CE(Fault)
I
Sink(Fault)
V
CE(top)
I
Sink(top)
V
C
I
DRV
Value
40
V
ref
30
−0.3 to V
ref
10
−0.3 to 5.0
20
20
40
50
30
100
Unit
V
V
mA
V
mA
V
V
mA
V
mA
V
mA
P
D
R
θJA
P
D
R
θJA
T
J
T
A
867
75
650
100
150
−40 to + 85
−40 to +125
mW
°C/W
mW
°C/W
°C
°C
Storage Temperature Range
T
stg
−65 to +150
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
ELECTRICAL CHARACTERISTICS
(V
CC
= V
C
= 20 V, R
T
= 4.7 k, C
T
= 10 nF, T
A
= 25°C, unless otherwise noted.)
Characteristic
REFERENCE SECTION
Reference Output Voltage (I
ref
= 1.0 mA)
T
A
= 25°C
(Note 4)
Line Regulation (V
CC
= 10 to 30 V, I
ref
= 1.0 mA)
Load Regulation (I
ref
= 1.0 to 20 mA)
Output Short Circuit Current (Note 5)
Reference Under Voltage Lockout Threshold
ERROR AMPLIFIER
Input Offset Voltage (Note 4)
Input Offset Current (Note 4)
Input Bias Current (Note 4)
Input Common Mode Voltage Range
Open Loop Voltage Gain (V
O
= 3.0 V, R
L
= 15 k)
Input Common Mode Rejection Ratio
Power Supply Rejection Ratio (V
CC
= V
C
= 10 to 30 V)
V
IO
I
IO
I
IB
V
ICR
A
VOL
CMRR
PSRR
70
55
65
−
−
−
0.4
8.0
−46
(0 V to V
ref
)
80
86
105
−
−
−
10
500
−1000
mV
nA
nA
V
dB
dB
dB
V
ref
5.9
5.82
Reg
line
Reg
load
I
SC
V
th
−
−
40
4.0
6.24
−
1.5
16
75
4.5
6.5
6.57
30
30
−
5.0
mV
mV
mA
V
V
Symbol
Min
Typ
Max
Unit
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 V
ref
.
3. NCV33035: T
low
= −40°C, T
high
= 125°C. Guaranteed by design. NCV prefix is for automotive and other applications requiring site and change
control.
4. MC33035: T
A
= −40°C to +85°C; NCV33035: T
A
= −40°C to +125°C.
5. Maximum package power dissipation limits must be observed.
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3
MC33035, NCV33035
ELECTRICAL CHARACTERISTICS
(continued)
(V
CC
= V
C
= 20 V, R
T
= 4.7 k, C
T
= 10 nF, T
A
= 25°C, unless otherwise noted.)
Characteristic
ERROR AMPLIFIER
Output Voltage Swing
High State (R
L
= 15 k to Gnd)
Low State (R
L
= 15 k to V
ref
)
OSCILLATOR SECTION
Oscillator Frequency
Frequency Change with Voltage (V
CC
= 10 to 30 V)
Sawtooth Peak Voltage
Sawtooth Valley Voltage
LOGIC INPUTS
Input Threshold Voltage (Pins 3, 4, 5, 6, 7, 22, 23)
High State
Low State
Sensor Inputs (Pins 4, 5, 6)
High State Input Current (V
IH
= 5.0 V)
Low State Input Current (V
IL
= 0 V)
Forward/Reverse, 60°/120° Select (Pins 3, 22, 23)
High State Input Current (V
IH
= 5.0 V)
Low State Input Current (V
IL
= 0 V)
Output Enable
High State Input Current (V
IH
= 5.0 V)
Low State Input Current (V
IL
= 0 V)
CURRENT−LIMIT COMPARATOR
Threshold Voltage
Input Common Mode Voltage Range
Input Bias Current
OUTPUTS AND POWER SECTIONS
Top Drive Output Sink Saturation (I
sink
= 25 mA)
Top Drive Output Off−State Leakage (V
CE
= 30 V)
Top Drive Output Switching Time (C
L
= 47 pF, R
L
= 1.0 k)
Rise Time
Fall Time
Bottom Drive Output Voltage
High State (V
CC
= 20 V, V
C
= 30 V, I
source
= 50 mA)
Low State (V
CC
= 20 V, V
C
= 30 V, I
sink
= 50 mA)
Bottom Drive Output Switching Time (C
L
= 1000 pF)
Rise Time
Fall Time
Fault Output Sink Saturation (I
sink
= 16 mA)
Fault Output Off−State Leakage (V
CE
= 20 V)
Under Voltage Lockout
Drive Output Enabled (V
CC
or V
C
Increasing)
Hysteresis
Power Supply Current
Pin 17 (V
CC
= V
C
= 20 V)
Pin 17 (V
CC
= 20 V, V
C
= 30 V)
Pin 18 (V
CC
= V
C
= 20 V)
Pin 18 (V
CC
= 20 V, V
C
= 30 V)
V
CE(sat)
I
DRV(leak)
t
r
t
f
V
OH
V
OL
t
r
t
f
V
CE(sat)
I
FLT(leak)
V
th(on)
V
H
I
CC
I
C
−
−
−
−
(V
CC
−2.0)
−
−
−
−
−
8.2
0.1
−
−
−
−
0.5
0.06
107
26
(V
CC
−1.1)
1.5
38
30
225
1.0
8.9
0.2
12
14
3.5
5.0
1.5
100
300
300
V
−
2.0
ns
200
200
500
100
10
0.3
mA
16
20
6.0
10
mV
μA
V
V
μA
ns
V
th
V
ICR
I
IB
85
−
−
101
3.0
−0.9
115
−
−5.0
mV
V
μA
V
V
IH
V
IL
I
IH
I
IL
I
IH
I
IL
I
IH
I
IL
3.0
−
−150
−600
−75
−300
−60
−60
2.2
1.7
−70
−337
−36
−175
−29
−29
−
0.8
μA
−20
−150
μA
−10
−75
μA
−10
−10
f
OSC
Δf
OSC
/ΔV
V
OSC(P)
V
OSC(V)
22
−
−
1.2
25
0.01
4.1
1.5
28
5.0
4.5
−
kHz
%
V
V
V
V
OH
V
OL
4.6
−
5.3
0.5
−
1.0
Symbol
Min
Typ
Max
Unit
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MC33035, NCV33035
V
CC
= 20 V
V
C
= 20 V
T
A
= 25°C
,
OSC OSCILLATOR FREQUENCY CHANGE (%)
100
f OSC, OSCILLATOR FREQUENCY (kHz)
4.0
V
CC
= 20 V
V
C
= 20 V
R
T
= 4.7 k
C
T
= 10 nF
2.0
10
0
C
T
= 100 nF
0
1.0
C
T
= 10 nF
C
T
= 1.0 nF
− 2.0
R
T
, TIMING RESISTOR (kΩ)
Δ
f
10
100
1000
− 4.0
− 55
− 25
0
25
50
75
100
125
T
A
, AMBIENT TEMPERATURE (°C)
Figure 1. Oscillator Frequency versus
Timing Resistor
Figure 2. Oscillator Frequency Change
versus Temperature
φ
, EXCESS PHASE (DEGREES)
Vsat , OUTPUT SATURATION VOLTAGE (V)
A VOL, OPEN LOOP VOLTAGE GAIN (dB)
56
48
40
32
24
16
8.0
0
− 8.0
−16
− 24
1.0 k
V
CC
= 20 V
V
C
= 20 V
V
O
= 3.0 V
R
L
= 15 k
C
L
= 100 pF
T
A
= 25°C
10 k
100 k
f, FREQUENCY (Hz)
1.0 M
Gain
Phase
40
60
80
0
V
ref
Source Saturation
(Load to Ground)
− 0.8
−1.6
1.6
0.8
0
0
V
CC
= 20 V
V
C
= 20 V
T
A
= 25°C
100
120
140
160
180
200
220
Gnd
Sink Saturation
(Load to V
ref
)
5.0
240
10 M
1.0
2.0
3.0
4.0
I
O
, OUTPUT LOAD CURRENT (mA)
Figure 3. Error Amp Open Loop Gain and
Phase versus Frequency
Figure 4. Error Amp Output Saturation
Voltage versus Load Current
VO, OUTPUT VOLTAGE (V)
3.0
2.95
VO, OUTPUT VOLTAGE (V)
3.05
A
V
= +1.0
No Load
T
A
= 25°C
4.5
A
V
= +1.0
No Load
T
A
= 25°C
3.0
1.5
1.0
μs/DIV
5.0
μs/DIV
Figure 5. Error Amp Small−Signal
Transient Response
Figure 6. Error Amp Large−Signal
Transient Response
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