HEF4752VD [NXP]
A.C. motor control circuit; 交流电机的控制电路
| 型号： | HEF4752VD |
| 厂家： | 
NXP |
| 描述： | A.C. motor control circuit |
| 文件： | 总6页 (文件大小：67K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
DATA SHEET
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
HEF4752V
LSI
A.C. motor control circuit
January 1995
Product specification
File under Integrated Circuits, IC04
Philips Semiconductors
Product specification
HEF4752V
LSI
A.C. motor control circuit
DESCRIPTION
PINNING
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.
Inputs; group I
24 = L
25 = I
data
data
data
data
data
data
data
7 = K
5 = CW
13 = A
15 = B
16 = C
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.
Inputs; group II
12 = FCT
17 = VCT
4 = RCT
6 = OCT
frequency clock
voltage clock
reference clock
output delay
clock
Outputs; group I
23 = RSYN
26 = VAV
18 = CSP
R-phase synchronization
average voltage
current sampling pulses
Outputs; group II
8 = ORM1
9 = ORM2
10 = ORC1
11 = ORC2
22 = OYM1
21 = OYM2
20 = OYC1
19 = OYC2
3 = OBM1
2 = OBM2
1 = OBC1
R-phase main
R-phase main
R-phase commutation
R-phase commutation
Y-phase main
Y-phase main
Y-phase commutation
Y-phase commutation
B-phase main
B-phase main
B-phase commutation
B-phase commutation
27 = OBC2
SUPPLY VOLTAGE
RATING
RECOMMENDED
OPERATING
HEF4752V −0,5 to 18 4,5 to 12,5 V
Fig.1 Pinning diagram.
January 1995
2
Philips Semiconductors
Product specification
HEF4752V
LSI
A.C. motor control circuit
HEF4752VP(N): 28-lead DIL; plastic (SOT117-2)
HEF4752VD(F): 28-lead DIL; ceramic (cerdip) (SOT135)
( ): Package Designator North America
FAMILY DATA
See Family Specifications
January 1995
3
DC CHARACTERISTICS
VSS = 0 V
Tamb (°C)
VDD
V
PARAMETER
SYMBOL
−40
+ 25
+ 85
UNIT
CONDITIONS
MIN. MAX. MIN. MAX. MIN. MAX.
5
−
−
50
100
−
−
−
−
50
100
0,3
−
−
−
375
750
1
µA
µA
µA
V
all valid input combinations;
VI = VSS or VDD
Quiescent device current
Input leakage current
Input voltage HIGH
IDD
10
10 ± IIN
−
−
VI = 0 or 10 V
5
VIH
10
3,5
7,0
−
−
3,5
7,0
3,5
7,0
−
−
inputs: group I
−
−
−
V
5
VIL
10
1,5
3,0
−
−
1,5
3,0
−
1,5
3,0
−
V
Input voltage LOW
Output voltage HIGH
Output voltage LOW
inputs: group I
−
−
4,95
9,95
−
−
V
5
4,95
9,95
−
4,95
9,95
−
V
VOH
10
VI = VSS or VDD; IO < 1 µA
VI = VSS or VDD; IO < 1 µA
inputs: group II
−
−
−
V
5
0,05
0,05
0,05
0,05
0,05
0,05
4,0
8,0
3,5
7,0
−
V
VOL
10
−
−
−
V
Input tripping level;
5
Vti
10
1,5
3,0
1,0
2,0
0,45
1,4
0,3
0,9
0,9
0,6
1,8
1,8
4,0 1,5
8,0 3,0
3,5 1,0
7,0 2,0
4,0 1,5
8,0 3,0
3,5 1,0
7,0 2,0
V
input voltage increasing
Input tripping level;
V
5
Vtd
10
V
inputs: group II
VOL = 0,4 V
input voltage decreasing
V
5
IOL
10
−
−
−
−
−
−
−
−
0,38
−
−
−
−
−
−
−
−
0,3
0,9
0,2
0,6
0,6
0,4
1,2
1,2
mA
mA
mA
mA
mA
mA
mA
mA
Output current LOW
Output current HIGH
outputs: groups I and II
1,17
0,25
0,75
0,75
0,5
−
V
OL = 0,5 V
VOH = 4,6 V
OH = 9,5 V
5
−
−IOH
10
outputs: group I
outputs: group I
outputs: groups II
outputs: group II
−
V
Output current HIGH
Output current HIGH
Output current HIGH
5
5
−IOH
−IOH
−IOH
−
VOH = 2,5 V
VOH = 4,6 V
−
10
5
1,5
−
VOH = 9,5 V
1,5
−
VOH = 2,5 V
IOL = IOH = 0; frequency applied to
inputs; FCT = 700 kHz; VCT = 400 kHz;
RCT = 400 kHz
Total supply current
10 Itot
−
−
typ. 2
−
−
−
mA
Philips Semiconductors
Product specification
HEF4752V
LSI
A.C. motor control circuit
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 VCb during braking
action.
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.
Fig.2 PWM motor speed control system using HEF4752V.
January 1995
5
Fig.3 Application of HEF4752V in a basic circuit configuration for AC motor control.
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