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參數(shù)資料
| 型號(hào)： | ADDC02828SA |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 28 V/100 W DC/DC Converter with Integral EMI Filter |
| 中文描述： | 中西區(qū)區(qū)議會(huì)28 V/100 /直流轉(zhuǎn)換器積分EMI濾波器 |
| 文件頁數(shù)： | 15/16頁 |
| 文件大?。?/td> | 204K |
| 代理商： | ADDC02828SA |
ADDC02828SA
REV. 0
–15–
DISABLE
ENB
GND
V
CC
OUT
HH73R-1MHZ
CONNER/WINFIELD
C1
.1μF
C2
+5V
SYNC OUT
SYNC 1
V
AUX
SYNC 2
SYNC 10
D2
1N5819
R13
1k
R5
1k
R2
1k
C3
.1μF
D1
1N966B
D3
1N5819
D4
1N5819
1C4
1C5
C13
100pF
R4
51k
OLH5801
(ISOLINK)
2
R3
357
SYNC IN
SYNC IN
3
5
6
8
R1
100k
A
K
A
K
Figure 28. Fault Tolerant, Secondary Side-Powered SYNC
Drive Circuit
NOT ES
1.
Input to Output Isolation
: With the use of the Isolink opto-
coupler, we can use the output of the converters to power the
Conner/Winfield 1 MHz clock (output referenced) and the
Vaux pin (input referenced) to power the opto-coupler.
2.
Fault Tolerant:
All outputs are capacitively coupled to ensure
that if the master clock stops working the individual units will
continue to operate at their own internal clock frequency,
thereby eliminating a potential single point failure.
3.
Radiated Emissions:
C2 can be added to slow down the clock
edges (T r and T f) for reducing radiated emissions.
4.
Table:
T he following table shows the capacitor and resis-
tor value to be used for the number of converters to be
synchronized.
Resistor
Value
(ohms)
# of
Converters
Capacitor
Value (pF)
1
2
3
4
5
6
7
8
9
10
1000
470
330
270
220
180
150
120
100
100
100
200
300
400
500
600
700
800
900
1K
0.100"
(2.54mm)
0.120"
(3.05mm)
Figure 25. Minimum Bend Radius of 40 Mil (1.02 mm) Pins
1
2
10
11
17
16
15
14
13
12
ADDC02828SA
PS1
C1
+28VDC
28RTN
RLOAD
NOTE: VALUE OF C1 IS DEPENDENT ON SOURCE IMPEDANCE.
REFER TO SECTION ON SYSTEM INSTABILITY CONSIDERATIONS.
Figure 26. Typical Power Connections and External Parts
for Converter (+28 V dc Out)
1
2
8
10
11
17
16
15
14
13
12
ADDC02828SA
1
2
8
10
11
17
16
15
14
13
12
ADDC02828SA
PS2
PS1
I
SHARE
C1
+28VDC
28RTN
+SENSE PS1
+SENSE PS2
RLOAD
+V
OUT
RETURN
NOTE: VALUE OF C1 IS DEPENDENT ON SOURCE IMPEDANCE.
REFER TO SECTION ON SYSTEM INSTABILITY CONSIDERATIONS.
Figure 27. Typical Connections for Paralleling Two
Converters (+28 V dc Out)
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