參數(shù)資料
型號： AMC8500QS16
廠商： Electronic Theatre Controls, Inc.
英文描述： TWO PHASE VARIABLE SPEED FAN MOTOR CONTROLLER
中文描述： 兩相流變速風扇電機控制器
文件頁數(shù)： 18/27頁
文件大?。?/td> 648K
代理商： AMC8500QS16
P
P
Preliminary Specification
- 18 -
Andigilog, Inc. 2006
www.andigilog.com
August 2006 - 70A04018
aMC8500
Application Requirements
Closest Standard 1.0% Resistor Values
Thermistor
Linearization
Gain
Offset
Min Speed
T
Speed
PWM
T
Speed
PWM
Minimum
Speed
Setting
R1
R2
R3
R4
R5
R6
R7
R8
°C
%on
°C
%on
%on
30
35
40
100
35
10000
6650
11500
32400
1130
1150
2550
1330
30
67
38
100
35
10000
6980
11500
16200
1870
1330
2550
1330
35
30
50
100
0
10000
4990
15400
29100
1370
1300
-
-
37
30
40
100
30
10000
5900
10200
133000
1000
1000
2910
1330
40
30
50
100
30
10000
4640
14700
49900
1000
1000
2910
1330
The Op Amp used in conjunction with the Reference is extremely useful in providing voltage gain and offset to condition the thermistor
signal so that it can drive the Speed Control Input. The table shows five different application requirements with the calculated closest
standard 1.0% resistor values. In each example, the required motor speed or PWM %on is defined for two sensor temperatures along
with a minimum speed setting. In the third application, the minimum speed set input is not required and the comparator must be disabled
by connecting Pin 6 to Pin 14. Note that the total Reference load current must exceed 2.0 mA in order to disable the automatic power
down feature.
13
7
6
Fault Timer
Power Down
Kick Start
Reference
Hall Amplifier
Non-Overlap
Commutation
H
Current Limit
Comp
Motor
Drives
12 V
Op Amp
Oscillator
R
Min Speed
Comp
PWM Comp
Digital
Detector
Thermal
Shutdown
Under Voltage
Lockout
Current
Limit
Latch
R
Q
S
16
1
12
15
14
10
9
8
5
11
2
PWM
Logic
10
μ
A
3
4
R4
R3
R2
10 k
@ 25°C
β
= 3694
R6
R5
R7
R8
T
R1
N
S
N
M
S
H
H
10 nF
Figure 34- Thermistor Sensing Variable Speed Temperature Regulator
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