參數資料
型號： UWR-3.3/8-D48A
元件分類： 電源模塊
英文描述： 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
文件頁數： 4/10頁
文件大?。?/td> 472K
代理商： UWR-3.3/8-D48A
UWR Models
26-40W , SINGLE OUTPUT DC/DC CONVER TERS
3
Performance/Functional Specications
Typical @ TA = +25°C under nominal line voltage and full-load conditions, unless noted.
Input
Input Voltage Range:
D12 Models
10-18 Volts (12V nominal)
D24 Models
18-36 Volts (24V nominal)
D48 Models
36-75 Volts (48V nominal)
Overvoltage Shutdown:
D12 Models
19-23 Volts (21V typical)
D24 Models
37-43 Volts (40V typical)
D48 Models
76.5-81 Volts (78V typical)
Start-Up Threshold:
D12 Models
8.5-10 Volts (9V typical)
D24 Models
16-18 Volts (17V typical)
D48 Models
33.5-36 Volts (35V typical)
Undervoltage Shutdown:
D12 Models
7.5-9 Volts (8V typical)
D24 Models
15-17 Volts (16V typical)
D48 Models
31-33.5 Volts (32V typical)
Input Current:
Normal Operating Conditions
See Ordering Guide
Standby Mode (Off, OV, UV)
5mA
Input Reected Ripple Current
250mAp-p
Input Filter Type
D12 Models
Capacitive (13.2F)
D24 Models
Pi (0.01F-1H-6.6F)
D48 Models
Pi (0.01F-2.2H-2F)
Reverse-Polarity Protection
Brief duration, 5A maximum
On/Off Control:
On = open or 13V - +VIN, IIN = 1.6mA max.
Off = 0-0.8V, IIN = 2.6mA max.
"N" Models
On = 0-0.8V, IIN = 1mA max.
Off = open or 3.3-+VIN, IIN = 1mA max.
Output
VOUT Accuracy (50% load):
±1.0%, maximum
Minimum Loading for Specication:
10% of IOUT maximum
Minimum Loading for Stability:
No load
Ripple/Noise (20MHz BW)
See Ordering Guide
Line/Load Regulation
See Ordering Guide
Efciency
See Ordering Guide
Trim Range
±5%
Isolation Voltage:
Input-to-Output
1500Vdc minimum
Input/Output to Case
1500Vdc minimum
Isolation Capacitance
470pF
Isolation Resistance
100M
Current Limit Inception (@98%VOUT):
3.3VOUT Models
10.5-11.5 Amps
5VOUT Models
8.5-9.5 Amps
Short Circuit Current: (Average)
3.3VOUT Models
3 Amps maximum
5VOUT Models
4 Amps maximum
Overvoltage Protection:
Output voltage comparator
3.3VOUT Models
3.7-4.1 Volts
5VOUT Models
5.6-7.1 Volts
Temperature Coefcient
±0.02% per °C.
Dynamic Characteristics
Dynamic Load Response:
(50-100% load step to 1% VOUT)
200sec maximum
Start-Up Time:
VIN to VOUT
10ms
On/Off to VOUT
10ms
Switching Frequency:
UWR-3.3/8-D12A
360kHz (±36kHz)
UWR-3.3/9-D24A, -D48A
300kHz (±30kHz)
UWR-5/7-D12A
360kHz (±36kHz)
UWR-5/8-D24A, -D48A
310kHz (±30kHz)
Environmental
MTBF
Bellcore, ground xed, full power
25°C ambient
UWR-5/8-D24A
1.6 million hours
Operating Temperature (Ambient):
D12A Models
+50°C
D24A/D48A Models
+55°C
With Derating
To +100°C (see Derating Curves)
Thermal Shutdown
+110°C case
Storage Temperature
–40 to +120°C
Physical
Dimensions
2" x 2" x 0.45" (50.8 x 50.8 x 11.43mm)
Case Material
Corrosion resistant steel with
non-conductive, epoxy-based, black
enamel nish and plastic baseplate
Pin Material
Brass, solder coated
Weight:
2.7 ounces (76.5 grams)
Primary to Secondary Insulation Level Functional
All models are specied with external 0.47F ceramic output capacitor.
See Technical Notes/Graphs for details.
Applying a voltage to On/Off Control (pin 4) when no input power is applied to the converter
can cause permanent damage.
Output noise may be further reduced with the addition of additional external output
capacitors. See Technical Notes.
The On/Off Control is designed to be driven with open-collector logic or the application
of appropriate voltage levels. Voltages may be referenced to the –Input (pin 2).
Demonstrated MTBF available on request.
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