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| 型号： | QM48S40033-NS00 |
| 厂商： | Power-One |
| 文件页数： | 6/13页 |
| 文件大小： | 0K |
| 描述： | DC/DC QTR BRICK 132W 3.3V SMD |
| 标准包装： | 125 |
| 系列： | * |
QM48S40033 DC-DC Converter Data Sheet
36-75 VDC Input; 3.3 VDC @ 40A Output
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 typically 34V for the converter to
turn on. Once the converter has been turned on, it will shut
off when the input voltage drops typically below 32V. This
feature is beneficial in preventing deep discharging of batter-
ies used in telecom applications.
Output Overcurrent Protection (OCP)
The converter is protected against overcurrent or short cir-
cuit conditions. Upon sensing an over-current condition, the
converter will switch to constant current operation and
thereby begin to reduce output voltage. When the output
voltage drops below 50% of the nominal value of output volt-
age, the converter will shut down.
Once the converter has shut down, it will attempt to restart
nominally every 100 ms with a typical 1-2% duty cycle. The
attempted restart will continue indefinitely until the overload
or short circuit conditions are removed or the output voltage
rises above 50% of its nominal value.
Output Overvoltage Protection (OVP)
The converter will shut down if the output voltage across
Vout(+) (Pin 8) and Vout(-) (Pin 4) exceeds the threshold of
the OVP circuitry. The OVP circuitry contains its own refer-
ence, independent of the output voltage regulation loop.
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-
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 7.5-A fuse is
recommended for use with this product.
Modules are UL approved for maximum fuse rating of 15-A.
To protect a group of modules with a single fuse, the rating
can be increased from the recommended values above.
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.
Effective internal LC differential filter significantly reduces
input reflected ripple current, and improves EMC.
With the addition of a simple external filter, all versions of the
QmaX? Series of 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.
Fig. H: Location of the thermocouple for thermal testing.
FEB 10, 2004 revised to NOV 13, 2006
Page 6 of 13
www.power-one.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| QM48S40033-NS00A | 制造商:Power-One 功能描述: |
| QM48S40033-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: |
| QM48S40033-NS0P | 制造商:Power-One 功能描述:DC/DC PS SGL-OUT 3.3V 40A 132W 8PIN QUARTER-BRICK - Bulk |
| QM48S40033-NS0PG | 制造商:Power-One 功能描述:DC/DC PS SGL-OUT 3.3V 40A 132W 8PIN QUARTER-BRICK - Bulk |
| QM48S40033-PS00 | 制造商:Power-One 功能描述:DC/DC PS SGL-OUT 3.3V 40A 132W - Bulk |
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