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| 型号： | QD48T025033-NBB0 |
| 厂商： | Power-One |
| 文件页数： | 6/15页 |
| 文件大小： | 0K |
| 描述： | CONV DC-DC 48V IN 3.3/2.5V DUAL |
| 标准包装： | 100 |
| 系列： | QD48 |
| 类型： | 隔离 |
| 输出数： | 2 |
| 电压 - 输入（最小）： | 36V |
| 电压 - 输入（最大）： | 75V |
| Voltage - Output 1： | 2.5V |
| Voltage - Output 2： | 3.3V |
| 电流 - 输出（最大）： | 15A，15A |
| 电源（瓦） - 制造商系列： | 49W |
| 电压 - 隔离： | 2kV（2000V） |
| 安装类型： | 通孔 |
| 封装/外壳： | 7-DIP 模块，1/4 砖 |
| 尺寸/尺寸： | 2.30" L x 1.45" W x 0.34" H（58.4mm x 36.8mm x 8.6mm） |
| 包装： | 托盘 |
| 工作温度： | -40°C ~ 85°C |
| 效率： | 88% |
| 电源（瓦特）- 最大： | 49.5W |
| 其它名称： | 179-2235 QD48T025033-NAA0 QD48T025033-NBBO |
QD48T025033 DC-DC Converter Data Sheet
36-75 VDC Input; 2.5 and 3.3VDC @ 15A Outputs
Trim Resistor
(Vout Increase)
Trim Resistor
(Vout Decrease)
Output Overvoltage Protection (OVP)
Δ [%]
1
2
3
4
5
6
7
8
9
10
R T-INCR [k ? ]
46.4
20.5
12.1
8.06
5.23
3.57
2.21
1.30
0.604
0
Δ [%]
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
R T-DECR [k ? ]
57.6
25.5
14.0
8.87
5.90
3.83
2.32
1.30
0.432
0
The converter will shut down if the output voltage across
either Vout1(+) (Pin 4) or Vout2(+) (Pin 7) and RETURN (Pin
5) exceeds the threshold of the OVP circuitry. The OVP
protection is separate for Vout1 and Vout2 with their own
reference independent of the output voltage regulation loops.
Once the converter has shut down, it will attempt to restart
every 100 ms until the OVP condition is removed.
Overtemperature Protection (OTP)
The converter will shut down under an overtemperature
condition to protect itself from overheating caused by
Note 2: The above trim resistor values match those typically
used in industry-standard dual quarter bricks.
Protection Features
Input Undervoltage Lockout
Input undervoltage lockout is standard with this converter.
The converter will shut down when the input voltage drops
below a pre-determined voltage.
The input voltage must be at least 35 V for the converter to
turn on. Once the converter has been turned on, it will shut
off when the input voltage drops below 31 V. This feature is
beneficial in preventing deep discharging of batteries used in
operation outside the thermal derating curves, or operation
in abnormal conditions such as system fan failure. After the
converter has cooled to a safe operating temperature, it will
automatically restart.
Safety Requirements
The converters meet North American and International
safety regulatory requirements per UL 60950-1 and EN
60950-1. Basic Insulation is provided between input and
output.
To comply with safety agencies requirements, an input line
fuse must be used external to the converter. A 5-A fuse is
recommended for use with this product.
telecom applications.
Electromagnetic Compatibility (EMC)
Output Overcurrent Protection (OCP)
The converter is protected against over-current or short
circuit conditions on both outputs. Upon sensing an
overcurrent condition, the converter will switch to constant
current operation and thereby begin to reduce output
voltages. If, due to current limit, the output voltage Vout2
(3.3 V) drops below Vout1 - 0.6 V converter will shutdown. If,
due to current limit, the output voltage Vout1 (2.5 V) drops
below 60% of its nominal value (1.5 V) the converter will shut
down (Figs. 26 and 27). Thus, current limit on one output
does not affect regulation on the other output.
Once the converter has shut down, it will attempt to restart
nominally every 100 ms with a typical 2% duty cycle (Figs.
28 and 29). The attempted restart will continue indefinitely
until the overload or short circuit conditions are removed or
the output voltage rises above undervoltage threshold.
EMC requirements must be met at the end-product system
level, as no specific standards dedicated to EMC
characteristics of board mounted component dc-dc
converters exist. However, Power-One tests its converters to
several system level standards, primary of which is the more
stringent EN55022, Information technology equipment -
Radio disturbance characteristics - Limits and methods of
measurement.
With the addition of a simple external filter (see application
notes), all versions of the QD48T converters pass the
requirements of Class B conducted emissions per EN55022
and FCC, and meet at a minimum, Class A radiated
emissions per EN 55022 and Class B per FCC Title 47CFR,
Part 15-J. Please contact Power-One Applications
Engineering for details of this testing.
MCD10084 Rev. 1.0, 25-Sep-08
Page 6 of 15
www.power-one.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| QD48T025033-NBB0G | 制造商:Power-One 功能描述:DC/DC CONVERTER 2.5V 3.3V 87W |
| QD48T025033-NCA0G | 制造商:Power-One 功能描述:DC/DC, 1/4BRICK, 48V IN, DUAL 2.5V & 3.3V OUT, THROUGH HOLE - Bulk |
| QD48T025033-NCB0 | 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 2.5V/3.3V 15A - Bulk |
| QD48T025033-NCB0G | 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 2.5V/3.3V 15A - Bulk |
| QD48T025033-NCC0 | 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 2.5V/3.3V 15A - Bulk |
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