Document Outline
- DESCRIPTION
- PINNING
- Inputs; group I
- Inputs; group II
- Outputs; group I
- Outputs; group II
- SUPPLY VOLTAGE
- FAMILY DATA
- DC CHARACTERISTICS
- APPLICATION INFORMATION
DATA SHEET
Product specification
File under Integrated Circuits, IC04
January 1995
INTEGRATED CIRCUITS
HEF4752V
LSI
A.C. motor control circuit
For a complete data sheet, please also download:
The IC04 LOCMOS HE4000B Logic
Family Specifications HEF, HEC
The IC04 LOCMOS HE4000B Logic
Package Outlines/Information HEF, HEC
January 1995
2
Philips Semiconductors
Product specification
A.C. motor control circuit
HEF4752V
LSI
DESCRIPTION
The HEF4752V is a circuit for a.c. motor speed control
utilizing LOCMOS technology. The circuit synthesizes
three 120
out of phase signals, of which the average
voltage varies sinusoidally with time in the frequency
range 0 to 200 Hz. The method employed is based upon
the pulse width modulation principle, in order to achieve a
sufficient accuracy of the output voltages over the whole
frequency range. A pure digital waveform generation is
used.
All outputs are of the push-pull type. Inputs and outputs are
protected against electrostatic effects in a wide variety of
device-handling situations. However, to be totally safe, it is
desirable to take handling precautions into account.
Fig.1 Pinning diagram.
PINNING
Inputs; group I
Inputs; group II
Outputs; group I
Outputs; group II
SUPPLY VOLTAGE
24 = L
data
25 = I
data
7 = K
data
5 = CW
data
13 = A
data
15 = B
data
16 = C
data
12 = FCT
frequency clock
17 = VCT
voltage clock
4 = RCT
reference clock
6 = OCT
output delay
clock
23 = RSYN
R-phase synchronization
26 = VAV
average voltage
18 = CSP
current sampling pulses
8 = ORM1
R-phase main
9 = ORM2
R-phase main
10 = ORC1
R-phase commutation
11 = ORC2
R-phase commutation
22 = OYM1
Y-phase main
21 = OYM2
Y-phase main
20 = OYC1
Y-phase commutation
19 = OYC2
Y-phase commutation
3 = OBM1
B-phase main
2 = OBM2
B-phase main
1 = OBC1
B-phase commutation
27 = OBC2
B-phase commutation
RATING
RECOMMENDED
OPERATING
HEF4752V
-
0,5 to 18 4,5 to 12,5 V
January 1995
3
Philips Semiconductors
Product specification
A.C. motor control circuit
HEF4752V
LSI
FAMILY DATA
See Family Specifications
HEF4752VP(N): 28-lead DIL; plastic (SOT117-2)
HEF4752VD(F): 28-lead DIL; ceramic (cerdip) (SOT135)
( ): Package Designator North America
January 1995
4
Philips Semiconductors
Product specification
A.C. motor control circuit
HEF4752V
LSI
DC CHARACTERISTICS
V
SS
= 0 V
PARAMETER
V
DD
V
SYMBOL
T
amb
(
C)
UNIT
CONDITIONS
-
40
+
25
+
85
MIN. MAX.
MIN.
MAX. MIN. MAX.
Quiescent device current
5
I
DD
-
50
-
50
-
375
A
all valid input combinations;
10
-
100
-
100
-
750
A
V
I
= V
SS
or V
DD
Input leakage current
10
I
IN
-
-
-
0,3
-
1
A
V
I
= 0 or 10 V
Input voltage HIGH
5
V
IH
3,5
-
3,5
-
3,5
-
V
inputs: group I
10
7,0
-
7,0
-
7,0
-
V
Input voltage LOW
5
V
IL
-
1,5
-
1,5
-
1,5
V
inputs: group I
10
-
3,0
-
3,0
-
3,0
V
Output voltage HIGH
5
V
OH
4,95
-
4,95
-
4,95
-
V
V
I
= V
SS
or V
DD
;
I
O
<
1
A
10
9,95
-
9,95
-
9,95
-
V
Output voltage LOW
5
V
OL
-
0,05
-
0,05
-
0,05
V
V
I
= V
SS
or V
DD
;
I
O
<
1
A
10
-
0,05
-
0,05
-
0,05
V
Input tripping level;
5
V
ti
1,5
4,0
1,5
4,0
1,5
4,0
V
inputs: group II
input voltage increasing
10
3,0
8,0
3,0
8,0
3,0
8,0
V
Input tripping level;
5
V
td
1,0
3,5
1,0
3,5
1,0
3,5
V
inputs: group II
input voltage decreasing
10
2,0
7,0
2,0
7,0
2,0
7,0
V
Output current LOW
5
I
OL
0,45
-
0,38
-
0,3
-
mA
V
OL
= 0,4 V
outputs: groups I and II
10
1,4
-
1,17
-
0,9
-
mA
V
OL
= 0,5 V
Output current HIGH
5
-
I
OH
0,3
-
0,25
-
0,2
-
mA
V
OH
= 4,6 V
outputs: group I
10
0,9
-
0,75
-
0,6
-
mA
V
OH
= 9,5 V
Output current HIGH
5
-
I
OH
0,9
-
0,75
-
0,6
-
mA
V
OH
= 2,5 V
outputs: group I
Output current HIGH
5
-
I
OH
0,6
-
0,5
-
0,4
-
mA
V
OH
= 4,6 V
outputs: groups II
10
1,8
-
1,5
-
1,2
-
mA
V
OH
= 9,5 V
Output current HIGH
5
-
I
OH
1,8
-
1,5
-
1,2
-
mA
V
OH
= 2,5 V
outputs: group II
Total supply current
10
I
tot
-
-
typ. 2
-
-
-
mA
I
OL
= I
OH
= 0; frequency applied to
inputs; FCT = 700 kHz; VCT = 400 kHz;
RCT = 400 kHz
January 1995
5
Philips Semiconductors
Product specification
A.C. motor control circuit
HEF4752V
LSI
APPLICATION INFORMATION
Figure 2 shows the functional block diagram of a 3-phase
a.c. motor speed control system using a thyristorized
inverter with variable frequency output. The inverter
control signals are generated by the HEF4752V
(PWM-IC). A special feature of the PWM (Pulse-Width
Modulation) - IC is here, that the motor is supplied by
sinoidally modulated pulses, hence the resulting motor
current will approach a sine-wave with a minimum on
higher harmonics. In this way, an optimum speed drive
with high performance is obtained.
Furthermore, the HEF4752V contains all logic circuitry
required for this special waveform generation, so that the
amount of control circuit components is reduced
considerable. The speed drive system in Fig.2 is controlled
by the analogue control section.
The FCT and VCT clock pulse oscillators are driven in
such a way, that a fast response speed control of the a.c.
motor is obtained, depending on: the reference values for
speed; motor voltage; motor current (Limited by the
measured motor current via DCCT - d.c. current
transformer -); the increasing value of V
Cb
during braking
action.
Fig.2 PWM motor speed control system using HEF4752V.
January 1995
6
Philips Semiconductors
Product specification
A.C. motor control circuit
HEF4752V
LSI
Fig.3 Application of HEF4752V in a basic circuit configuration for AC motor control.
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