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參數(shù)資料
| 型號： | AWO25F24N-S |
| 英文描述： | HEADER,.100",4POS,641215-4-VP, GOLD,STR. POST,FRICTION LOCK |
| 中文描述： | 單輸出8磚：開放框架模塊 |
| 文件頁數(shù)： | 6/13頁 |
| 文件大?。?/td> | 382K |
| 代理商： | AWO25F24N-S |
Technical Reference Notes
ALO25F24
(Single Output 8
th
Brick)
MODEL: ALO25F24
AUGUST 23, 2005 - REVISION H
SHEET 6 OF 13
+Vin
-Vin
Enable
-Vout
+Vout
-Sense
+Sense
Vadj
Rload
Radj_up
Figure 3. Trim UP test configuration (Pin Side Up).
+Vin
-Vin
Enable
-Vout
+Vout
-Sense
+Sense
Vadj
Rload
Radj_down
Figure 4. Trim DOWN test configuration (Pin Side Up).
Basic Operation and Features
INPUT UNDER VOLTAGE LOCKOUT
To prevent any instability to the converter, which may affect the end system, the converter have been designed to turn-on once
V
IN
is in the voltage range of 17.2-17.95 VDC. Likewise, it has also been programmed to turn-off when V
IN
drops down to
15.8-16.5 VDC.
OUTPUT VOLTAGE ADJUST/TRIM
The converter comes with a TRIM pin (PIN 6), which is used to adjust the output by as much as 90% to 110% of its set point.
This is achieved by connecting an external resistor as described below.
To
INCREASE
the output, external R
adj_up
resistor
should be connected between TRIM PIN (Pin6) and
+SENSE PIN (Pin 7). Please refer to Equation (1) for the
required external resistance and output adjust
relationship.
Equation (1a):
To
DECREASE
the output, external R
adj_down
resistor
should be connected between TRIM pin (Pin 6) and
-SENSE PIN (Pin 5). Please refer to Equation (2) for the
required external resistance and output adjust
relationship.
Equation (2):
Where:
% = percent change in output voltage
Radj_down
510
%
10.2
k
Radj_up
5.1
Voset
1.225
×
100
%
+
(
)
×
%
×
510
%
10.2
=
Κ
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