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SMFLHP2805S/KR PDF预览

SMFLHP2805S/KR

更新时间： 2024-11-10 03:51:19
品牌 Logo 应用领域
CRANE 转换器输入元件
页数 文件大小 规格书
6页 259K
描述
DC/DC CONVERTERS 28 VOLT INPUT

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SMFLHP2805S/KR 技术参数

生命周期：Contact Manufacturer包装说明：, MODULE,12LEAD,3.0
Reach Compliance Code：compliant风险等级：5.56
模拟集成电路 - 其他类型：DC-DC REGULATED POWER SUPPLY MODULE最大输入电压：40 V
最小输入电压：19 V标称输入电压：28 V
JESD-30 代码：R-XDMA-P12JESD-609代码：e4
长度：63.5 mm功能数量：1
输出次数：1端子数量：12
最高工作温度：125 °C最低工作温度：-55 °C
最大输出电流：16 A最大输出电压：5.125 V
最小输出电压：4.875 V标称输出电压：5 V
封装主体材料：UNSPECIFIED封装等效代码：MODULE,12LEAD,3.0
封装形状：RECTANGULAR封装形式：MICROELECTRONIC ASSEMBLY
认证状态：Not Qualified筛选级别：MIL-PRF-38534 Class K
座面最大高度：10.16 mm子类别：Other Analog ICs
表面贴装：NO技术：HYBRID
温度等级：MILITARY端子面层：GOLD
端子形式：PIN/PEG端子节距：5.08 mm
端子位置：DUAL总剂量：100k Rad(Si) V
最大总功率输出：80 W微调/可调输出：YES
宽度：38.1 mmBase Number Matches：1

SMFLHP2805S/KR 数据手册

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FEATURES  
SMFLHP SERIES  
100 WATT  
DC/DC CONVERTERS  
28 VOLT INPUT  
• Fully qualified to Class H or K  
• –55° to +125°C operation  
• 19 to 40 VDC input  
• Fully Isolated  
• Magnetic feedback  
MODELS  
• Fixed frequency, 600 kHz typical  
• Topology – Single Ended Forward  
• Inhibit function – input and output  
• Sync function  
VDC OUTPUT  
SINGLE  
DUAL  
±5  
±12  
±15  
3.3  
5
12  
15  
• Output trim on single output models  
• Indefinite short circuit protection  
• Remote sense on single output models  
• Up to 87% efficiency  
• Parallelable up to 270 watts  
Size (max.): 3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 10.16 mm)  
See cases “U maximum dimensions” and “U” for dimensions.  
Weight:  
86 grams maximum  
Screening: Space Prototype, Class H, or Class K  
Radiation hardness levels O or R  
See “QA Screening: Class H and K, QML” for more information.  
Available configurations: OO, HO, HR, KR  
DESCRIPTION  
The SMFLHP Series™ 28 volt DC/DC converters are rated up to  
100 watts output power over a –55° to +125°C temperature range  
with a 28 Vdc nominal input. On dual output models, up to 70% of  
the rated output power can be drawn from either the positive or  
negative outputs. Current sharing allows the units to be paralleled  
for total power of up to 270 watts. The welded, hermetically sealed  
package is only 3.005 x 1.505 x 0.400 inches, giving the series an  
overall power density of up to 67 watts per cubic inch.  
INHIBIT  
The SMFLHP Series converters have two TTL compatible inhibit  
terminals (INH1 and INH2) that can be used to disable power  
conversion, resulting in a very low quiescent input current. An open  
collector TTL compatible low (<0.8 volts) is required between INH1  
(pin 4) and Input Common (pin 2) to inhibit the converter. An open  
collector TTL compatible low (<0.5 volts) is required between INH2  
(pin 12) and Output Common (pin 8) to inhibit the converter. The  
application of intermediate voltages to these pins (1.5 to 10.5 volts)  
should be avoided.  
SCREENING  
SMFLHP converters offer screening options to Space Prototype (O),  
Class H, or Class K. Available radiation hardness (RHA) levels are  
O or R. See “QA Screening: Class H and K, QML” for more infor-  
mation.  
CURRENT SHARING AND PARALLEL OPERATION  
Multiple SMFLHP converters may be used in parallel to drive a  
common load (see Figure 2). In this mode of operation the load  
current is shared by two or three SMFLHP converters. In current  
sharing mode, one SMFLHP converter is designated as a master.  
The SLAVE pin (pin 11) of the master is left unconnected and the  
MSTR/INH2 pin (pin 12) of the master is connected to the SLAVE  
pin (pin 11) of the slave units. The units designated as slaves have  
the MSTR/INH2 pin (pin 12) connected to the SNS RTN pin (pin 9).  
Figure 2 shows the typical setup for two or three units in parallel.  
Note that synchronizing the units together (though shown in the  
figure) is not required for current sharing operation. A second slave  
unit may be placed in parallel with a master and slave; this requires  
the TRI pin (pin 3) of the master unit to be connected to the SNS  
RTN pin (pin 9).  
DESIGN FEATURES  
The SMFLHP Series converters are switching regulators that use a  
quasi-square wave, single ended forward converter design with a  
constant switching frequency of 600 kHz.  
Isolation between input and output circuits is provided with a trans-  
former in the forward path and wide bandwidth magnetic coupling in  
the feedback control loop. The SMFLHP Series uses a unique dual  
loop feedback technique that controls output current with an inner  
feedback loop and output voltage with a cascaded voltage mode  
feedback loop.  
When paralleled, 90% of the total combined power ratings of the  
SMFLHP converters are available at the load. Overload and short  
circuit performance are not adversely affected during parallel  
operation.  
The additional secondary current mode feedback loop improves  
transient response in a manner similar to primary current mode  
control and allows for ease of paralleling.  
Tight load regulation is achieved through a wide-bandwidth  
magnetic feedback circuit. The output voltage on single SMFLHP  
models can be easily trimmed by adding an external resistor. (See  
Figure 1 for voltage changes with different resistor values.)  
Contact Information  
Interpoint, a Crane Co. Company  
PO Box 97005 • Redmond WA 98073-9705  
425-895-4053 • electronics@craneae.com  
www.craneae.com/power  
123456

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