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参数资料
| 型号： | ALD20A48-S |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 60 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | SIXTEENTH BRICK PACKAGE-8 |
| 文件页数： | 17/20页 |
| 文件大小： | 602K |
| 代理商： | ALD20A48-S |
Technical Reference Notes
ALD12/18/20/25 Series
(Single Output 16
th Brick)
MODEL: ALD12/18/20/25 SERIES
SHEET 6 OF 20
AUGUST 17, 2005 – REVISION C
+Vin
-Vin
Enable
-Vout
+Vout
-Sense
+Sense
Vadj
Rload
Radj_up
Figure 3. External resistor configuration to increase the outputs
+Vin
-Vin
Enable
-Vout
+Vout
-Sense
+Sense
Vadj
Rload
Radj_down
Figure 4. External resistor configuration to increase the outputs
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 VIN
is in the voltage range of 34-36 VDC. Likewise, it has also been programmed to turn-off when VIN drops down to 31-33.5 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 Radj_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): 1.5V to 5V
Equation (1b): 1.2V
To DECREASE the output, external Radj_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
OUTPUT ENABLE
The converter comes with an Enable pin (PIN 2), which is primarily used to turn ON/OFF the converter. Both a Positive (no “N”
suffix required) and a Negative (suffix “N” required) Enable Logic options are being offered.
Radj_down
510
%
10.2
k
Radj_up
5.1
Voset
×
100
%
+
()
×
0.6
%
×
510
%
10.2
=Κ
Radj_up
5.1
Voset
×
100
%
+
()
×
1.225
%
×
510
%
10.2
=Κ
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ALD20F48- | 制造商:ASTEC 制造商全称:Astec America, Inc 功能描述:Single Output 16th Brick: 60Watts |
| ALD20F48-6 | 制造商:ASTEC 制造商全称:Astec America, Inc 功能描述:Single Output 16th Brick: 60Watts |
| ALD20F48-6S | 制造商:ASTEC 制造商全称:Astec America, Inc 功能描述:Single Output 16th Brick: 60Watts |
| ALD20F48N- | 制造商:ASTEC 制造商全称:Astec America, Inc 功能描述:Single Output 16th Brick: 60Watts |
| ALD20F48N-6 | 制造商:ASTEC 制造商全称:Astec America, Inc 功能描述:Single Output 16th Brick: 60Watts |
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