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参数资料
| 型号： | ASQ48T15033-PBB0G |
| 厂商： | POWER-ONE INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 49.5 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT, ONE-EIGHTH BRICK PACKAGE-8 |
| 文件页数： | 14/15页 |
| 文件大小： | 267K |
| 代理商： | ASQ48T15033-PBB0G |
MCD10170 Rev. 1.0, 10-Jun-10
Page 8 of 15
www.power-one.com
ASQ48T15033 & ASQ48S15033 DC-DC Converter Data Sheet
36 to 75 VDC Input; 15A, 3.3 VDC 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 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. Upon sensing an overcurrent condition, the
converter will switch to constant current operation and there-
by begin to reduce output voltage. When the output voltage
drops below 1.2 VDC, the converter will shut down (Fig. 25).
Once the converter has shut down, it will attempt to restart
nominally every 100 ms with a 1% duty cycle (Fig 26). The
attempted restart will continue indefinitely until the overload
or short circuit conditions are removed or the output voltage
rises above 1.2 VDC.
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 conver-
ter has cooled to a safe operating temperature, it will auto-
matically restart.
Safety Requirements
The converters meet North American and International
safety regulatory requirements per UL 60950-1/CSA 22.2
No. 60950-1-07 Second Edition, IEC 60950-1: 2005, and
EN 60950-1:2006. 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.
If one input fuse is used for a group of modules, the maxi-
mum fuse rating should not exceed 15-A (ASQ modules are
UL approved with up to a 15-A fuse).
Electromagnetic Compatibility (EMC)
EMC requirements must be met at the end-product system
level, as no specific standards dedicated to EMC characte-
ristics of board mounted component dc-dc converters exist.
However, di/dt tests its converters to several system level
standards, primary of which is the more stringent EN55022,
Information technology equipment - Radio disturbance cha-
racteristics - Limits and methods of measurement.
With the addition of a simple external filter (see application
notes), the ASQ48T/S15 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 di/dt Applications Engineering for details of this test-
ing.
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