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參數(shù)資料
| 型號： | PT4148C |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 24V Input Isolated DC-DC Converter(24V輸入隔離的DC/DC轉(zhuǎn)換器) |
| 中文描述： | 24V輸入隔離DC - DC轉(zhuǎn)換器（24V的輸入隔離的直流/直流轉(zhuǎn)換器） |
| 文件頁數(shù)： | 1/6頁 |
| 文件大小： | 201K |
| 代理商： | PT4148C |
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
Standard Application
Pin-Out Information
Pin Function
Remote
(3)
ON/OFF
2
-V
in
3
+V
in
4
-V
out
5
+V
out
PT4140 Series—24V
20 Watt 24V Input Isolated
DC-DC Converter
PT4140
-Vout
3
2
4
5
1
+Vout
-Vin
+Vin
6
VoAdj
On/Off
PT Series Suffix
(PT1234
X
)
Pin Configuration
Horizontal Through-Hole
Horizontal Surface Mount
A
C
Ordering Information
(1)
PT4141
¨
= 3.3V/5A
PT4142
¨
= 5.0V/4A
PT4143
¨
= 12.0V/1.6A
PT4144
¨
= 15.0V/1.3A
(1)
PT4146
¨
= 1.5V/5A
(1)
PT4147
¨
= 1.8V/5A
(1)
PT4148
¨
= 2.5V/5A
* Note:
This product is the
subject of one or more patents.
Other patents pending.
(For dimensions and PC board
layout, see Package Style 710.)
1
6
V
out
Adjust
(3)
Wide Input Voltage Range
18V to 40V
82% Efficiency
1500 VDC Isolation
Small Footprint 1.45” x 1.64”
Low Profile 0.315” (8mm)
Adjustable Output
Short Circuit Protection
Over Temperature Shutdown
UL1950 Recognized
CSA 22.2 950 Certified
Designed to Meet EN60950
The PT4140 series of 24V Isolated DC-DC
Converters advance the state-of-the-art for board-
mounted converters by employing 850kHz
switching frequencies, planar magnetics, and
surface-mount construction. These regulators
are pin-compatible with Power Trends’
popular PT4100 series, and offer an improved
power density (25 Watts/in
3
) plus output
voltage adjustment. They are designed for
Telecom, Industrial, Computer, Medical, and
other distributed power applications that require
input-to-output isolation.
Specifications
Characteristics
(T
a
= 25
°
C unless noted)
Output Current
PT4140 SERIES
Typ
—
—
—
7
2xI
omax
1.0
1.0
18.0
Symbols
I
o
Conditions
Over V
in
range
Min
0
0
0
—
—
—
—
Max
5.0
(2)
4.0
(2)
1.6
(2)
10
—
—
—
40.0
Units
V
o
< 3.3V
V
o
= 5V
V
o
= 12V
A
On/Off Standby Current
Short Circuit Current
Inrush Current
I
in standby
I
sc
I
ir
t
ir
V
in
V
o
V
in
= 24V, Pin 1 = -V
in
V
in
= 24V
V
= 24V @ I
o
max
On start-up
Over I
o
Range
Over V
Range, I
=I
o
max
T
a
= -40°C to +85°C
Over V
in
range @ I
o
max
10% to 100% of I
o
max
V
in
=24V, I
o
=I
o
max, V
o
> 5V
V
in
=24V, I
o
=I
o
max, V
o
< 5V
50% load change, V
o
> 5V
V
o
over/undershoot
V
in
=24V, I
o
=5A, V
o
=3.3V
V
in
=24V, I
o
=4A, V
o
=5V
V
in
=24V, I
o
=1.6A, V
o
=12V
Over V
in
and I
o
,
mA
A
A
mSec
VDC
Input Voltage Range
Output Voltage Tolerance
24.0
—
±1.0
±2.0
%V
o
Line Regulation
Load Regulation
V
o
Ripple/Noise
Reg
line
Reg
load
V
n
—
—
—
—
—
—
—
—
—
800
600
±0.5
±0.5
1.0
50
100
3.0
78
82
83
850
650
±1.0
±1.0
—
—
—
—
—
—
—
900
700
%V
o
%V
o
%V
o
mV
pp
μSec
%V
o
Transient Response
t
tr
Efficiency
η
%
Switching Frequency
o
V
o
≤
5V
V
o
>5V
kHz
Maximum Operating
Temperature Range
Storage Temperature
Mechanical Shock
T
a
V
= 24V
with 200 LFM airflow
—
Per Mil-Std-883D, method 2002.3,
1mS, half-sine, mounted to a fixture
Per Mil-Std-883D, method 2007.2,
20-2000Hz, soldered in a PC board
—
—
—
—
Materials meet UL 94V-0
Open or 2.5 to 7.0 VDC above -V
in
Short or 0 to 0.8 VDC above -V
in
-40
—
+85
(2)
°C
T
s
—
-40
—
+110
°C
—
500
—
G’s
Mechanical Vibration
—
—
15
—
G’s
Weight
Isolation
Capacitance
Resistance
Flammability
Remote On/Off
—
—
—
—
—
On
Off
—
1500
—
10
15
—
1100
—
—
—
—
—
grams
V
pF
M
Notes:
(1) The maximumoutput current limits the power rating of the following devices to less than 20W:-
PT4141 =16.5W; PT4146 =7.5W; PT4147 =9W; PT4148 =12.5W.
(2) See Safe Operating Area curves or contact the factory for the appropriate derating.
(3) See Application Notes at end of section.
SLTS120A
(Revised 2/15/2001)
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