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| 型号： | SSQL48T20033-NAABG |
| 厂商： | Power-One |
| 文件页数： | 6/14页 |
| 文件大小： | 0K |
| 描述： | CONV DC-DC 3.3V 20A 1/16 BRICK |
| 标准包装： | 98 |
| 系列： | SSQL48T20033 |
| 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/关功能和 UVLO |
| 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 0.38" H（33.0mm x 22.9mm x 9.5mm） |
| 包装： | 散装 |
| 工作温度： | -40°C ~ 85°C |
| 效率： | 90.5% |
| 电源（瓦特）- 最大： | 66W |
| 其它名称： | 179-2428 SSQL48T20033-NDA0G |
SSQL48T20033 DC-DC Converter Data Sheet
36-75 VDC Input; 3.3 VDC @ 20A Output
Fig. D: Configuration for decreasing output voltage .
Trimming/sensing beyond 110% of the rated output
voltage is not an acceptable design practice, as this
condition could cause unwanted triggering of the
output overvoltage protection (OVP) circuit. The
designer should ensure that the difference between
the voltages across the converter’s output pins and
its sense pins does not exceed 10% of VOUT(nom),
or:
Output Overvoltage Protection (OVP)
The converter will shut down if the output voltage
across Vout(+) and Vout(-) exceeds the threshold of
the OVP circuitry. The OVP circuitry contains its own
reference, independent of the output voltage regulation
loop. Once the converter has shut down, it will attempt
to restart every 200 ms until the OVP condition is
removed.
[V OUT (+) – V OUT (-)] – [V SENSE (+) – V SENSE (-)] < V O–NOM X 10%
[V]
Over-temperature Protection (OTP)
The converter will shut down under an
over-
This equation is applicable for any condition of
output sensing and/or output trim.
Protection Features
Input Undervoltage Lockout (UVLO)
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 above 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 batteries used in
telecom applications.
Output Protections
All output circuit protection features are non-latching
and operate in a “hiccup” mode. After an output
protection event occurs, the converter will be turned
off, and held off for approximately 200 ms after
which, the protection circuit will reset and the
converter will attempt to restart. If the fault is still
present, the converter will repeat the above action.
Once the fault is removed, the converter will start
normally.
Output Over-current Protection (OCP)
The converter is protected against overload or short
circuit conditions. Upon sensing an overload
condition, the converter enters constant current
mode of operation and will shut down if overload
condition is longer than 10 msec.
Once this occurs, it will enter hiccup mode and
attempt to restart approximately every 200 ms with
an approximate duty cycle of 9%. The attempted
restart will continue indefinitely until the overload or
short circuit condition is removed.
Once the output current is brought back into its
specified range, the converter automatically exits the
hiccup mode and resumes normal operation
temperature condition to protect itself from overheating
caused by operation outside the thermal derating
curves, or operation in abnormal conditions such as
system fan failure. The converter will automatically
restart after it has cooled to a safe operating
temperature.
Safety Requirements
The converters are safety approved to UL/CSA60950-
1, EN60950-1, and IEC60950-1. Basic Insulation is
provided between input and output.
The converters have no internal fuse. 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.
The SSQL48T20033 converter is UL approved for a
maximum fuse rating of 15A.
Electromagnetic Compatibility (EMC)
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.
An effective internal LC differential filter significantly
reduces input reflected ripple current, and improves
EMC.
With the addition of a simple external filter, the
SSQL48T20033 converter will pass the requirements
of Class B conducted emissions per EN55022 and
FCC requirements. Refer to Figures 17 – 18 for typical
performance with external filter.
Rev 0.2, 03-Mar-11
www.power-one.com
Page 6 of 14
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| SSQL48T20033-NAB0G | 制造商:Power-One 功能描述:- Trays |
| SSQL48T20033-NABBG | 制造商:Power-One 功能描述:- Trays |
| SSQL48T20033-NDABG | 功能描述:CONV DC-DC 3.3V 20A 1/16 BRICK RoHS:是 类别:电源 - 板载 >> DC DC Converters 系列:SSQL48T20033 设计资源:Maxi/Mini/Micro Design Guide, Appl Manual 标准包装:1 系列:Maxi 类型:隔离 输出数:1 电压 - 输入（最小）:36V 电压 - 输入（最大）:75V Voltage - Output 1:28V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出（最大）:* 电源（瓦） - 制造商系列:500W 电压 - 隔离:* 特点:* 安装类型:通孔 封装/外壳:模块 尺寸/尺寸:4.60" L x 2.20" W x 0.62" H（116.8mm x 55.9mm x 15.7mm） 包装:散装 工作温度:-55°C ~ 100°C 效率:* 电源（瓦特）- 最大:* |
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