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参数资料
| 型号： | PT4401A |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 75 W DC-DC REG PWR SUPPLY MODULE |
| 文件页数： | 5/10页 |
| 文件大小： | 229K |
| 代理商： | PT4401A |
For technical support and more information, see inside back cover or visit www.ti.com
PT4402—48V
75-W 48-V Input Isolated
DC/DC Converter
Note A:
All data listed in the above graphs has been developed from actual products tested at 25°C. This data is considered typical data for the DC-DC Converter.
Note B:
SOA curves represent operating conditions at which internal components are at or below manufacturer’s maximum rated operating temperature.
PT4402 Characterstic Data
PT4402 Specifications (Unless otherwise stated, Ta =25°C, Vin =48V, Vo =1.5V, Co =0F, and Io =Iomax)
PT4402
Characteristic
Symbol
Conditions
Min
Typ
Max
Units
Output Current
Io
Over Vin range
0
—
20
A
Input Voltage Range
Vin
Over Io Range
36
48
75
V
Set Point Voltage Tolerance
Vo tol
—
±0.6 (1)
—%Vo
Temperature Variation
Regtemp
–40° >Ta > +85°C
—
±0.8
—
%Vo
Line Regulation
Regline
Over Vin range
—
±1
—
mV
Load Regulation
Regload
Over Io range
—
±1
—
mV
Total Output Voltage Variation
Votot
Includes set-point, line, load,
—
±1.6
±3
%Vo
–40° >Ta > +85°C
Efficiency
η
Io =10A
—
84
—
%
Vo Ripple (pk-pk)
Vr
20MHz bandwidth
—
40
—
mVpp
Transient Response
ttr
1A/s load step, 50% to 100% Iomax
—
75
—
s
Vtr
Vo over/undershoot
—
±3
—
%Vo
Over-Current Threshold
ITRIP
Shutdown, followed by auto-recovery
—
28
—
A
Output Over-Voltage Protection
OVP
Output shutdown and latch off
—
125
—
%Vo
Switching Frequency
o
Over Vin range
—
300
—
kHz
Under-Voltage Lockout
UVLO
—
32
—
V
Remote On/Off Input
Referenced to –Vin
Input High Voltage
VIH
4.5
—
Open (2)
V
Input Low Voltage
VIL
–0.2
—
+0.8
Input Low Current
IIL
—
–0.3
—
mA
Standby Input Current
Iin standby
pins 1 & 2 connected
—
2
—
mA
Internal Input Capacitance
Cin
—
1.4
—
F
External Output Capacitance
Cout
Between +Vo and –Vo
0
5,000
F
Isolation Voltage
Input-output & input-case
1500
—
Vdc
Capacitance
Input-output
—
1200
—
pF
Resistance
Input-output
10
—
M
Notes:
(1) If (–)Remote Sense is not used, pin 12 must be connected to pin 13 for optimum output voltage accuracy.
(2) The Remote On/Off input has an internal pull-up. If it is left open-circuit the module will operate when input power is applied. A discrete MOSFET or
bipoloar transistor is recommended to control this input. The open-circuit voltage is typically 5V. See application notes for interface considerations.
Efficiency vs Load Current; Vin =48V (See Note A)
Output Ripple vs Load Current; Vin =48V (See Note A)
Power Dissipation vs Load Current; Vo =1.5V (See Note A)
Safe Operating Area; Vin =48V (See Note B)
50
60
70
80
90
04
8
12
16
20
Iout (A)
Efficiency
-
%
1.75V
1.5V
1.2V
1.05V
VOUT
0
20
40
60
80
100
0
4
8
12
16
20
Iout (A)
Ripple
-
mV
1.75V
1.5V
1.2V
1.05V
VOUT
20
30
40
50
60
70
80
90
0
4
8
12
16
20
Iout (A)
Ambient
Temperature
(
°C)
200LFM
100LFM
Nat conv
0
2
4
6
8
10
0
4
8
12
16
20
Iout (A)
Pd
-
Watts
75.0V
60.0V
48.0V
36.0V
VIN
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