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參數資料
| 型號： | 12S5.5000UW |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 25 W DC-DC REG PWR SUPPLY MODULE |
| 文件頁數： | 1/4頁 |
| 文件大小： | 113K |
| 代理商： | 12S5.5000UW |
A
25 to 45 Watt UW Single Series DC/DC Converters
2401 Stanwell Drive Concord, California 94520 Ph: 925/687-4411 or 800/542-3355 Fax: 925/687-3333 www.calex.com Email: sales@calex.com
1
3/2001
PI
INPUT
FILTER
1
2
8
5
4
3
7
6 + OUTPUT
CMN
+ SENSE
TRIM
- SENSE
+ INPUT
- INPUT
ON/OFF
VOLTAGE
FEED
FORWARD
PWM
SHIELDED COPPER CASE
THERMAL SHUTDOWN
C1
D1
C2
Features
!
Ultra Wide Input Voltage Range
!
Low Noise, Highly Regulated Single Outputs
!
No Derating to 80°C Case Temperature
!
Six-Sided Shielded Low Thermal
Gradient Copper Case
!
Overvoltage Protected Output
!
Pulse by Pulse Digital Current Limiting Thermal
Overload Protection
!
Direct Paralleling of Outputs
!
5 Year Warranty
Description
These converters are state-of-the-art 100kHz Bipolar based
designs that provide outstanding efficiency of up to 91% at full
load. The output is regulated with a high loop gain feed
forward control method that provides linear regulator type
performance with a true, high efficiency switching DC/DC
topology. The large amount of loop gain insures excellent
input ripple rejection and line transient response.
Outstanding line and load regulation are achieved over the
full input voltage range and over the specified load current
range by the use of external voltage sensing circuitry. Also
included are a logic shutdown pin to control converter operation
and an output voltage trim pin.
The converters are protected from output shorts to common
by a high speed, pulse by pulse digital, current limit circuit and
a resettable thermal shutdown circuit. The output and the
power switch are overvoltage protected.
25 to 45 Watt UW Single Series Block Diagram
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0
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2
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2
1
S
4
20
.
4
10
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0
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2
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0
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2
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0
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4
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W
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0
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.
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1
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4
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.
7
10
.
0
40
.
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10
0
3
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u
O1
C2
C1
D
5F
0
1F
0
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8
.
6
2
1F
0
3
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7
4V
5
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7
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8
1
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