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| 型号： | ULS-3.3/20-D48NH-C |
| 厂商： | Murata Power Solutions Inc |
| 文件页数： | 11/24页 |
| 文件大小： | 0K |
| 描述： | CONVERT DC/DC 3.3V @ 20A NEG CC |
| 标准包装： | 128 |
| 系列： | ULS |
| 类型： | 隔离 |
| 输出数： | 1 |
| 电压 - 输入（最小）： | 36V |
| 电压 - 输入（最大）： | 75V |
| Voltage - Output 1： | 3.3V |
| 电流 - 输出（最大）： | 20A |
| 电源（瓦） - 制造商系列： | 66W |
| 电压 - 隔离： | 2.25kV（2250V） |
| 特点： | 具有远程开/关功能 |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-DIP 模块，1/16 砖 |
| 尺寸/尺寸： | 1.30" L x 0.90" W x 0.40" H（33.0mm x 22.9mm x 10.2mm） |
| 包装： | 托盘 |
| 工作温度： | -40°C ~ 85°C |
| 效率： | 90% |
| 电源（瓦特）- 最大： | 66W |
ULS 60-Watt Series
Sixteenth-brick DOSA-Compatible,
Isolated DC/DC Converters
FUNCTIONAL SPECIFICATIONS, ULS-12/5-D48
ABSOLUTE MAXIMUM RATINGS
Conditions ?
Minimum
Typical/Nominal
Maximum
Units
Input Voltage, Continuous
Input Voltage, Transient
Isolation Voltage
Input Reverse Polarity
Full power operation
Operating or non-operating, tested:
100 mS max. duration
Input to output
None, install external fuse
None
80
100
2250
Vdc
Vdc
Vdc
Vdc
On/Off Remote Control
Output Power
Power on, referred to -Vin
0
0
15
60.6
Vdc
W
Output Current
Current-limited, no damage,
short-circuit protected
0 5 A
Storage Temperature Range
Vin = Zero (no power) -55 125 °C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other
than those listed in the Performance/Functional Speci?cations Table is not implied or recommended.
INPUT
Operating voltage range
Recommended External Fuse
Start-up threshold, turn on
Undervoltage shutdown, turn off 12
Overvoltage protection
Reverse Polarity Protection
Internal Filter Type
Input current
36 48 75 Vdc
Fast blow 4 A
Rising input voltage 33 34.5 35.5 Vdc
Falling input voltage 31 32.5 33.5 Vdc
NA Vdc
None, install external fuse None Vdc
Capacitance
Full Load Conditions
Low Line
Inrush Transient
Output in Short Circuit
No Load input current
Shut-Down Mode Input Current (TH)
Shut-Down Mode Input Current (SMT)
Re?ected (back) ripple current ?
Re?ected (back) ripple current ?
Vin = nominal
Vin = minimum
Iout = minimum, unit=ON
no ?ltering
Measured at input with speci?ed ?lter
1.37
1.83
0.05
100
50
15
15
150
15
1.43
1.89
200
150
25
20
200
30
A
A
A2-Sec.
mA
mA
mA
mA
mAp-p
mAp-p
The converter will
Pre-biased startup
External output voltage < Vset
start if the external
load pre-bias does
not exceed Vnom
GENERAL and SAFETY
Ef?ciency
Vin=48V, full load
Vin=Min (TH)
Vin=Min (SMT)
88
89
89
91
90
91.5
%
%
%
Isolation
Isolation Voltage, input to output
Insulation Safety Rating
Isolation Resistance
Isolation Capacitance (TH)
Isolation Capacitance (SMT)
basic
100
1000
1500
2250
Vdc
MΩ
pF
pF
Safety (meets the following requirements)
UL-60950-1, CSA-C22.2 No.60950-1,
IEC/EN60950-1, 2nd Edition
Yes
Calculated MTBF
Per MIL-HDBK-217F, ground benign,
Tambient=+40°C
TBD
Hours x 10 3
Calculated MTBF ?
19
Per Telcordia SR332, issue 1, class 3, ground
?xed, Tambient=+40°C
3200
Hours x 10 3
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency
Startup Time
Startup Time (TH)
Startup Time (SMT)
Dynamic Load Response
Dynamic Load Peak Deviation
Power on, Vout regulated
Remote ON to Vout regulated
Remote ON to Vout regulated
50-75-50% load step, settling time to within
1% of Vout.
same as above
470
520
25
±180
570
30
30
20
50
±240
KHz
mS
mS
mS
μSec
mV
www.murata-ps.com/support
MDC_ULS Series.B31 Page 11 of 24
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