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參數(shù)資料
| 型號(hào)： | PT4401C |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類(lèi)： | 電源模塊 |
| 英文描述： | 1-OUTPUT 75 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | SMD-21 |
| 文件頁(yè)數(shù)： | 3/10頁(yè) |
| 文件大小： | 229K |
| 代理商： | PT4401C |
For technical support and more information, see inside back cover or visit www.ti.com
PT4400 Series
75-W 48-V Input Isolated
DC/DC Converter
PT4401
VID4=1
VID4=0
VID3 VID2 VID1 VID0
Vout
1111
N/D *
1.30V
1110
2.10V
1.35V
1101
2.20V
1.40V
1100
2.30V
1.45V
1011
2.40V
1.50V
1010
2.50V
1.55V
1001
2.60V
1.60V
1000
2.70V
1.65V
0111
2.80V
1.70V
0110
2.90V
1.75V
0101
3.00V
1.80V
0100
3.10V
1.85V
0011
3.20V
1.90V
0010
3.30V
1.95V
0001
3.40V
2.00V
0000
3.50V
2.05V
Logic 0 =Pin 12 potential; (–)Remote Sense
Logic 1 =Open circuit (no pull-up resistors)
Environmental Specifications
Characteristics
Symbols
Conditions
Min
Typ
Max
Units
Operating Temperature Range
Ta
Over Vin Range
–40
—
+85 (i)
°C
Storage Temperature
Ts
—
–40
—
+125
°C
Mechanical Shock
Per Mil-STD-883D, Method 2002.3
1 msec, Sine, mounted
—
TBD
—
G’s
Mechanical Vibration
Mil-STD-883D, Method 2007.2
Vertical
—
TBD (ii)
—
G’s
20-2000 Hz, PCB mounted
Horizontal
—
TBD (ii)
—
Weight
—
Vertical/Horizontal
—
50
—
grams
ShutdownTemperature
OTP
Case temperature - auto reset
—
115
—
°C
Flammability
—
Meets UL 94V-O
Notes
(i) See SOA curves or consult factory for appropriate derating
(ii) The case pins on the through-hole package types (suffixes N &A) must be soldered. For more information see the applicable package outline drawing.
Output Voltage Programming Information
Pin Descriptions
+Vin:
The positive input for the module with respect to
–Vin. When powering the module from a –48V telecom
central office supply, this input is connected to the primary
system ground.
–Vin:
The negative input supply for the module, and the
0VDC reference for the Remote On/Off input. When
powering the module from a +48V supply, this input is
connected to the 48V(Return).
Remote On/Off:
A positive logic input that is referenced to
–Vin. Pulling this input down to –Vin potential disables
the module’s output. If this input is left open-circuit, the
module will produce an output whenever a valid input
source is applied.
VID0 – VID4:
Selects the set-point output voltage of the
converter according to the applicable program code.
VID0 – VID4 must either be connected to (–)Remote
Sense or left open circuit. Note: For the PT4402 & PT4403,
VID 4 is internally disabled and may be left open circuit.
+Vo:
The positive power output with respect to -Vo, which
is DC isolated from the input supply pins. If a negative
output voltage is desired, +Vo should be connected to the
secondary circuit common and the output taken from –Vo.
–Vo:
The negative power output with respect to +Vo,
which is DC isolated from the input supply pins. This
output is normally connected to the secondary circuit
common when a positive output voltage is desired.
+Remote Sense:
Provides the converter with remote sense
capability to regulate the set-point voltage directly at the
load. When used with –Remote Sense, the regulation
circuitry will compensate for voltage drop between the
converter and the load. The pin may be left open circuit,
but connecting it to +Vo will improve load regulation.
–Remote Sense:
This is the logic ‘0’ reference for the
inputs VID0 – VID4, and provides the converter with
remote sense capability when used in conjunction with
+Remote Sense. For optimum output voltage accuracy
this pin should always be connected to –Vo.
PT4402
VID4=
×××××
Vout
N/D *
1.05V
1.10V
1.15V
1.20V
1.25V
1.30V
1.35V
1.40V
1.45V
1.50V
1.55V
1.60V
1.65V
1.70V
1.75V
PT4403
VID4=
×××××
Vout
N/D *
3.40V
3.56V
3.72V
3.88V
4.05V
4.21V
4.37V
4.53V
4.69V
4.86V
5.02V
5.18V
5.34V
5.50V
5.67V
* N/D = Output voltage is not defined
VID 4 (pin 11) of PT4402 & PT4403 is don’t care (
×).
Note: During operation, changes to the program code should be limited to 15% of Vo so as to avoid activating the output OV protection.
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