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参数资料
| 型号： | QD48S018033-NS00 |
| 厂商： | Power-One |
| 文件页数： | 6/16页 |
| 文件大小： | 0K |
| 描述： | DC/DC QTR BRICK 77W 1.8/3.3V |
| 标准包装： | 125 |
| 系列： | * |
QD48S018033 DC-DC Converter Data Sheet
36-75 VDC Input; 1.8 – 3.3 VDC @ 15A Output
Trim Resistor
(Vout Increase)
Trim Resistor
(Vout Decrease)
Output Overvoltage Protection (OVP)
? [%]
1
2
3
4
5
6
7
8
9
10
R T-INCR [k ? ]
54.9
24.9
14.3
9.31
6.34
4.32
2.80
1.69
0.825
0
? [%]
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
R T-DECR [k ? ]
68.1
30.1
17.8
11.5
7.68
5.36
3.48
2.10
1.05
0
The converter will shut down if the output voltage across ei-
ther Vout1(+) (Pin 4) or Vout2(+) (Pin 7) and RETURN (Pin
5) exceeds the threshold of the OVP circuitry. The OVP pro-
tection is separate for Vout1 and Vout2 with their own refer-
ence 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 con-
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
telecom applications.
Output Overcurrent Protection (OCP)
The converter is protected against overcurrent or short cir-
cuit conditions on both outputs. Upon sensing an overcurrent
condition, the converter will switch to constant current opera-
tion and thereby begin to reduce output voltages. If, due to
current limit, the output voltage Vout2 (3.3 V) drops below
Vout1 (1.8 V), Vout1 will follow Vout2 with not more than
0.6V difference. Drop on Vout1 output due to current limit will
not affect voltage on Vout2. For further load increase, if ei-
ther Vout1 or Vout2 drops below 1 Vdc, the converter will
shut down (Figs. 30 and 31).
Once the converter has shut down, it will attempt to restart
nominally every 100 ms with a 2% duty cycle (Figs. 32 and
33). The attempted restart will continue indefinitely until the
overload or short circuit conditions are removed or the output
voltage rises above 1 Vdc.
dition to protect itself from overheating caused by operation
outside the thermal derating curves, or operation in abnor-
mal conditions such as system fan failure. After the con-
verter has cooled to a safe operating temperature, it will
automatically restart.
Safety Requirements
The converters meet North American and International
safety regulatory requirements per UL60950 and EN60950.
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 4-A fuse is
recommended for use with this product.
Electromagnetic Compatibility (EMC)
EMC requirements must be met at the end-product system
level, as no specific standards dedicated to EMC character-
istics 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 distur-
bance characteristics - Limits and methods of measurement.
With the addition of a simple external filter (see application
notes), all versions of the QD48S converters pass the re-
quirements of Class B conducted emissions per EN55022
and FCC, and meet at a minimum, Class A radiated emis-
sions per EN 55022 and Class B per FCC Title 47CFR, Part
15-J. Please contact Power-One Applications Engineering
for details of this testing.
NOV 11, 2003 revised to NOV 20, 2006
Page 6 of 16
www.power-one.com
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| QD48T018025-NBB0 | CONV DC-DC 37.5W 2.5/1.8V DUAL |
| QD48T025033-NBB0 | CONV DC-DC 48V IN 3.3/2.5V DUAL |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| QD48S018033-NS00G | 功能描述:DC/DC转换器 RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| QD48S018033-PS00 | 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 1.8V/3.3V 15A - Bulk |
| QD48S018033-PS00G | 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 1.8V/3.3V 15A - Bulk |
| QD48S018050-NS00 | 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 1.8V/5V 15A/10A - Bulk |
| QD48S018050-NS00G | 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 1.8V/5V 15A/10A - Bulk |
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