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参数资料
| 型号： | PSA5A2-2 |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封装： | METAL, CASE A01, MODULE |
| 文件页数： | 3/10页 |
| 文件大小： | 411K |
| 代理商： | PSA5A2-2 |
Chassis Mountable
Switching Regulators
PSA Series
Edition 5/5.2000
2/10
Type Key
PSA 12 3 -2 iRY
Positive switching regulator in case A02 ..................... PSA
Nominal output voltage in volt (3E for 3.3 V) .......... 3E...24
Nominal output current in ampere ............................... 2...5
Operational ambient temperature range
T
A
–10...50
°C ........................................................... -2
Options package:
Inhibit input ............................................................ i
Control input for output voltage adjustment 1 ....... R
Small soldering pins 0.5
× 1.0 mm ........................ Y
Example:
PSA 123-2iPY = A positive switching regulator with a 12 V, 3 A output, ambient temperature range of
–10…50
°C, with options package: inhibit input, external output voltage adjustment and small soldering pins.
Control circuit
Go–
Vo+
Gi–
Vi+
Input
Filter
R (option
package)
i (option
package)
Io
U o
Ii
U i
03050
Ce
Fig. 1
Block diagram
Functional Description
The switching regulators are designed using the buck con-
verter topology. See also:
Technical Information: Topolo-
gies. The input is not electrically isolated from the output.
During the on period of the switching transistor, current is
transferred to the output and energy is stored in the output
choke in the form of flux. During the off period, this energy
forces the current to continue flowing through the output,
to the load and back through the freewheeling diode.
Regulation is accomplished by varying the on to off duty
ratio of the power switch.
These regulators are ideal for a wide range of applica-
tions, where input to output isolation is not necessary, or
where already provided by an external front end (e.g. a
transformer with rectifier). To optimise customer’s needs,
additional options and accessories are available.
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相关代理商/技术参数 |
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