Motorola MC33039P, MC33039D, MC33039DR2 Datasheet

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The MC33039 is a high performance closed–loop speed control adapter
specifically designed for use in brushless DC motor control systems.
Implementation will allow precise speed regulation without the need for a
magnetic or optical tachometer. This device contains three input buffers
each with hysteresis for noise immunity, three digital edge detectors, a
programmable monostable, and an internal shunt regulator. Also included is
an inverter output for use in systems that require conversion of sensor
phasing. Although this device is primarily intended for use with the MC33035
brushless motor controller, it can be used cost effectively in many other
closed–loop speed control applications.

• Digital Detection of Each Input Transition for Improved Low

Speed Motor Operation

• TTL Compatible Inputs With Hysteresis

• Operation Down to 5.5 V for Direct Powering from MC33035 Reference

• Internal Shunt Regulator Allows Operation from a Non–Regulated

Voltage Source

• Inverter Output for Easy Conversion between 60°/300° and 120°/240°

Sensor Phasing Conventions

CLOSED LOOP

BRUSHLESS MOTOR

ADAPTER

SEMICONDUCTOR

TECHNICAL DATA

8

1

P SUFFIX

PLASTIC PACKAGE

CASE 626

8

1

D SUFFIX

PLASTIC PACKAGE

CASE 751

(SO–8)

Representative Block Diagram

V

CC

φ

A

T o Rotor
Position
Sensors

4

+

20 k

3

φ

A

2

φ

B

1

φ

C

Delay

Delay

Delay

8

+

8.25 V

7

Gnd

MOTOROLA ANALOG IC DEVICE DATA

PIN CONNECTIONS

φ

1

R

T

6

+

R

+

2R

–

15 k

QS

R

+
–

+

0.3 V

C

T

5

f

out

Inputs

C

2

φ

B

φ

3

A

4

φ

A

(Top View)

V

8

CC

Gnd

7

RT/C

6

T

5

f

out

ORDERING INFORMATION

Operating

Device

MC33039D
MC33039P

 Motorola, Inc. 1996 Rev 0

Temperature Range

TA = – 40° to +85°C

Package

SO–8

Plastic DIP

1

MAXIMUM RATINGS

VCC Zener Current

MC33039

Rating Symbol Value Unit

I

Z(VCC)

30 mA

Logic Input Current (Pins 1, 2, 3) I
Output Current (Pins 4, 5), Sink or Source I
Power Dissipation and Thermal Characteristics

Maximum Power Dissipation @ TA = + 85°C

Thermal Resistance, Junction–to–Air
Operating Junction Temperature T
Operating Ambient Temperature Range T
Storage Temperature Range T

ELECTRICAL CHARACTERISTICS (V

Characteristic

LOGIC INPUTS

Input Threshold Voltage

High State

Low State

Hysteresis
Input Current

High State (VIH = 5.0 V)

φ

A

φB, φ

C

Low State (VIL = 0 V)

φ

A

φB, φ

C

MONOSTABLE AND OUTPUT SECTIONS

Output Voltage

High State

f

(I

out

φ

(I

A

Low State

f

(I

out

φ

(I

A

Capacitor CT Discharge Current I
Output Pulse Width (Pin 5) t

POWER SUPPLY SECTION

Power Supply Operating Voltage Range (TA = – 40° to + 85°C) V
Power Supply Current I
Zener Voltage (IZ = 10 mA) V
Zener Dynamic Impedance (∆IZ = 10 mA to 20 mA, f p 1.0 kHz)  Zka — 2.0 5.0 Ω

source

source

sink

= 10 mA)

sink

= 5.0 mA)

= 2.0 mA)

= 10 mA)

= 6.25 V, RT = 10 k, CT = 22 nF, TA = 25°C, unless otherwise noted)

CC

IH

DRV

P

R

θJA

stg

D

J

A

5.0 mA
20 mA

650
100

+ 150 °C

– 40 to + 85 °C

– 65 to +

150

Symbol Min Typ Max Unit

V

IH

V

IL

V

H

I

IH

I

IL

V

OH

V

OL

dischg

PW

CC

CC

Z

mW

°C/W

°C

2.4
—

0.4

– 40

—

– 190

—

3.60

4.20

—
—

20 35 60 mA

205 225 245 µs

5.5 — V

1.8 3.9 5.0 mA

7.5 8.25 9.0 V

2.1

1.4

0.7

– 60

– 0.3

– 300

– 0.3

3.95

4.75

0.25

0.25

—

1.0

0.9

– 80

– 5.0

– 380

– 5.0

4.20
—

0.50

0.50

Z

V

µA

V

V

2

MOTOROLA ANALOG IC DEVICE DATA

°

Sensor

60

Electrical
Phasing
Input

120

°

Sensor
Electrical
Phasing
Input

MC33039

Figure 1. T ypical Three Phase, Six Step Motor Application

Rotor Electrical Position (Degrees)

24060 120 300 7206000

180 360 480

φ

A

φ

B

φ

C

φ

A

φ

B

φ

C

φA Output

Latch

I

SetI Input

RT/C

T

f

Output

out

Constant Motor Speed Increasing Motor

OPERA TING DESCRIPTION

The MC33039 provides an economical method of
implementing closed–loop speed control of brushless DC
motors by eliminating the need for a magnetic or optical
tachometer. Shown in the timing diagram of Figure 1, the
three inputs (Pins 1, 2, 3) monitor the brushless motor rotor
position sensors. Each sensor signal transition is digitally
detected, ORied at the Latch iSeti Input, and causes CT to
discharge. A corresponding output pulse is generated at f
(Pin 5) of a defined 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 a low pass filter or integrator,
a DC voltage proportional to speed is generated. Figure 2
shows the proper connections for a typical closed loop

out

≈

0.67 V

Speed

Vth

V

out

CC

(AVG)

application using the MC33035 brushless motor controller.
Constant speed operation down to 100 RPM is possible with
economical three phase four pole motors.

The φA inverter output (Pin 4) is used in systems where the
controller and motor sensor phasing conventions are not
compatible. A method of converting from either convention to
the other is shown in Figure 3. For a more detailed
explanation of this subject, refer to the text above Figure 39
on the MC33035 data sheet.

The output pulse amplitude VOH is constant with
temperature and controlled by the supply voltage on V

CC

(Pin 8). Operation down to 5.5 V is guaranteed over
temperature. For systems without a regulated power supply,
an internal 8.25 V shunt regulator is provided.

MOTOROLA ANALOG IC DEVICE DATA

3