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參數(shù)資料
| 型號(hào)： | PT4481N |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 100 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | SIP-26 |
| 文件頁(yè)數(shù)： | 2/8頁(yè) |
| 文件大?。?/td> | 177K |
| 代理商： | PT4481N |
For technical support and more information, see inside back cover or visit www.ti.com
PT4480 Series Comparison
Output Voltage
Configuration for
Functionality
Program Range
Current Sharing
PT4481
Regulator
1.3V– 3.5V
N+1 with other PT4481s
PT4482
Regulator
1.3V– 3.5V
With PT4499 boosters
PT4499
PT4482 Booster
N/A
Used only with PT4482
PT4483
Regulator
4.6V–5.7V
N+1 with other PT4483s
PT4484
Regulator
4.6V–5.7V
With PT4498 boosters
PT4498
PT4484 Booster
N/A
Used only with PT4484
PT4485
Regulator
6.5V– 17.5V
N+1 with other PT4485s
PT4486
Regulator
6.5V–17.5V
With PT4497 boosters
PT4497
PT4486 Booster
N/A
Used only with PT4486
PT4481—48V
100-W 30-A Programmable
Isolated DC/DC Converter
Programming Information
VID4=1 VID4=0
VID3 VID2 VID1 VID0
Vout
1
2.0V
1.30V
1
0
2.1V
1.35V
1
0
1
2.2V
1.40V
1
0
2.3V
1.45V
1
0
1
2.4V
1.50V
1
0
0
2.5V
1.55V
1
0
1
2.6V
1.60V
1
0
2.7V
1.65V
0
1
2.8V
1.70V
0
1
0
2.9V
1.75V
0
1
0
1
3.0V
1.80V
0
1
0
3.1V
1.85V
0
1
3.2V
1.90V
0
1
0
3.3V
1.95V
0
1
3.4V
2.00V
0
3.5V
2.05V
Logic 0 = Connect to (–)Remote Sense, pin 20
Logic 1 = Open circuit (no pull-up resistors)
VID3 & VID4 must not be changed while unit is operating
# This specification covers only the PT4481 regulator.
Specifications (Unless otherwise stated, Ta =25°C, Vin =48V, Vo =3.3V, Co =0F, and Io =Iomax)
PT4481
Characteristic
Symbol
Conditions
Min
Typ
Max
Units
Output Current
Io
Over Vin range
0
—
30
A
Input Voltage Range
Vin
Over Io Range
36
4875
VDC
Set Point Voltage Tolerance
Vo tol
—
±1
±1.5
%Vo
Temperature Variation
Regtemp
–40°
≤Tcase ≤ +100°C, Io =0
—
±0.5
—
%Vo
Line Regulation
Regline
Over Vin range
—
±0.1
±1
%Vo
Load Regulation
Regload
Over Io range
—
±0.2
±1
%Vo
Total Output Voltage Variation
Votot
Includes set-point, line, load,
—
±2±3%Vo
–40°
≤Tcase ≤ +100°C
Efficiency
η
Io =15A
Vo =3.3V
—
89
—
Vo =2.5V
—
87
—
%
Vo =1.5V
—
81
—
Vo Ripple (pk-pk)
Vr
20MHz bandwidth
Vo>2V
—
60
75
mVpp
Vo≤2V
—
45
55
Transient Response
ttr
0.1A/s load step, 50% to 75% Iomax
—
N/A
—
s
Vtr
Vo over/undershoot
—
1
—
%Vo
1A/s load step, 50% to 100% Iomax
—
75
—
s
Vo over/undershoot
—
±5
—
%Vo
Current Limit
Ilim
Vin =36V, Vo = –1%
—35
—
A
foldback continuous limit
Current Share Tolerance
Ishr tol
With other PT4481 modules in N+1
—
±10
—
%
Over-Voltage Protection
OVP
Shutdown and latch off
—
125
—
%Vo
Switching Frequency
s
Over Vin range
270
300
350
kHz
Under-Voltage Lockout
UVLO
—
34.5
—
V
Inhibit (Pin 3)
Referenced to –Vin (pin 2)
Input High Voltage
VIH
2.5
—
Open (1)
V
Input Low Voltage
VIL
–0.5
—
+0.8
Input Low Current
IIL
—
–0.2
—
mA
Standby Input Current
Iin standby
pins 3 & 2 connected
—
4
10
mA
Internal Input Capacitance
Cin
—3
—F
External Output Capacitance
Cout
Between +Vo and –Vo
0
—
10,000
F
Isolation Voltage
Input–output/input–case
1500
—
V
Capacitance
Input to output
—
1100
—
pF
Resistance
Input to output
10
—
M
Operating Temperature Range
Tc
Case temperature, over Vin range
-40
—
+115 (2)
°C
Over-Temperature Shutdown
OTP
Case temperature, auto reset
—
120
—
°C
Storage Temperature
Ts
—
-40
—
+125
°C
Reliability
MTBF
Per Bellcore TR-332
1.4
—
106 Hrs
50% stress, Ta =40°C, ground benign
Mechanical Shock
—
Per Mil-Std-883D, method 2002.3,
—
500
—
G’s
1mS, half-sine, mounted to a fixture
Mechanical Vibration
—
Mil-Std-883D, Method 2007.2
Suffixes A, C
—
20 (3)
—G’s
20-2000Hz, pcb mounted
Weight
—
90
—
grams
Flammability
—
Materials meet UL 94V-0
Notes:
(1) The Inhibit (pin 3) has an internal pull-up, which if left open circuit allows the converter to operate when input power is applied. The open-circuit is
limited to 6.5V. Refer to the application notes for interface considerations.
(2) See Safe Operating Area curves or contact the factory for the appropriate derating.
(3) The case pins on through-hole pin configuration (suffix A) must be soldered. For more information see the applicable package outline drawing.
#
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