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参数资料
| 型号： | PT4711C |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 2-OUTPUT 45 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | METAL, SMD-21 |
| 文件页数： | 7/13页 |
| 文件大小： | 349K |
| 代理商： | PT4711C |
For technical support and further information, visit http://power.ti.com
PT4711—48V
45-W Dual-Output Isolated
DC/DC Converter
SLTS225 APRIL 2004
PT4711 Electrical Specifications
(Unless otherwise stated, the operating conditions are:- Ta =25°C, Vin =48 V, and Io =Iomax)
PT4711
Characteristics
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Io1, Io2
Both outputs
0
—
1.5
A
Input Voltage Range
Vin
Continuous
36
—
75
V
Surge (1 minute)
—
80
Set-Point Voltage
Vo1, Vo2
14.55
15.0
15.45
V
Temperature Variation
Regtemp
–40°C
≤Ta ≤+85°C, Io =Iomin
Vo1, Vo2
—
±0.5
—
%Vo
Line Regulation
Regline
All outputs, Over Vin range
—
±0.05
±0.25
%Vo
Load Regulation
Regload
All outputs, 0
≤Io≤Iomax
—
±0.2
±0.5
%Vo
Cross Regulation
Regcross
Io1 =Io1max, 0 ≤ Io2 ≤ Io2max
—
±10
—
mV
Io2 =Io2max, 0 ≤ Io1 ≤ Io1max
Total Output Voltage Variation
Votot
Includes set-point, line, load,
Vo1 , Vo2
14.25
—
15.75
V
–40°C
≤Ta ≤+85°C
Efficiency
η
—86
—
%
Vo Ripple (pk-pk)
Vn
Measured from each output to COM, Vo
1, Vo2
—15
—
mVpp
0 to 20 MHz bandwidth
Transient Response
ttr
0.1 A/s load step, 50% to 75% Iomax
—
100
—
Sec
Vos
Vo over/undershoot
—
2
—
%Vo
Output Adjust Range
Vox adj
Each Vo adjusted independently
—
±10
—
%Vo
Current Limit Threshold
IoLIM
Shutdown, auto restart
Vo1, Vo2
—
2.5
—
A
Switching Frequency
s
Over Vin and Io ranges
550
600
650
kHz
Under Voltage Lockout
Von
Vin increasing
—
34
—
V
Voff
Vin decreasing
—
32
—
Enable Control (pins 3 & 4)
Referenced to –Vin (pin 2)
High-Level Input Voltage
VIH
4
—
Open (1)
V
Low-Level Input Voltage
VIL
–0.2
—
0.8
(1)
Low-Level Input Current
IIL
Pin connected to –Vin (pin 2)
—
–0.16
—
mA
Standby Input Current
Iin standby
pins 3 & 4 open circuit
—
5
20
mA
Internal Input Capacitance
Cint
—1
—F
External Output Capacitance
Co
Each output to COM
Vo1, Vo2
0
—
500
F
Primary/Secondary Isolation
V iso
1500
—
V
C iso
—
2,200
—
pF
R iso
10
——M
Secondary Working Voltage
Vsec
Between any two output pins
—
35 (2)
V
Operating Temperature Range
Ta
Over Vin Range
–40
—
85 (3)
°C
Solder Reflow Temperature
Treflow
Surface temperature of module pins or case
—
215 (4)
°C
Storage Temperature
Ts
—
–40
—
125
°C
Mechanical Shock
Per Mil-STD-883D, Method 2002.3
—
500
—
G’s
1 msec, Sine, mounted
Mechanical Vibration
Mil-STD-883D, Method 2007.2
Suffix A
—
15 (5)
—
G’s
20-2000 Hz
Suffix N, C
—
20 (5)
—
Weight
—
Vertical/Horizontal
—
50
—
grams
ShutdownTemperature
OTP
115
125
°C
Flammability
—
Meets UL 94V-O
Notes:
(1) The Enable inputs (pins 3 & 4) have internal pull-ups. Leaving pin 3 open-circuit and connecting pin 4 to –Vin allows the the converter to operate when
input power is applied. The maximum open-circuit voltage is 5 V.
(2) The maximum voltage that may exist between any two output pins.
(3) See SOA curves or consult factory for appropriate derating.
(4) During solder reflow of SMD package version, do not elevate the module case, pins, or internal component temperatures above a peak of 215°C. For
further guidance refer to the application note, “Reflow Soldering Requirements for Plug-in Power Surface Mount Products,” (SLTA051).
(5) Only the case pins on through-hole pin configurations (N & A) must be soldered. For more information see the applicable package outline drawing.
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