欢迎访问ic37.com |
会员登录 免费注册
发布采购

QSW025A0B741-HZ 参数 Datasheet PDF下载

QSW025A0B741-HZ图片预览
型号: QSW025A0B741-HZ
PDF下载: 下载PDF文件 查看货源
内容描述: 36 - 75VDC输入; 12VDC输出; 25A输出电流 [36 - 75Vdc Input; 12Vdc Output; 25A Output Current]
分类和应用:
文件页数/大小: 16 页 / 411 K
品牌: LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
 浏览型号QSW025A0B741-HZ的Datasheet PDF文件第3页浏览型号QSW025A0B741-HZ的Datasheet PDF文件第4页浏览型号QSW025A0B741-HZ的Datasheet PDF文件第5页浏览型号QSW025A0B741-HZ的Datasheet PDF文件第6页浏览型号QSW025A0B741-HZ的Datasheet PDF文件第8页浏览型号QSW025A0B741-HZ的Datasheet PDF文件第9页浏览型号QSW025A0B741-HZ的Datasheet PDF文件第10页浏览型号QSW025A0B741-HZ的Datasheet PDF文件第11页  
Data Sheet  
February 16, 2009  
QSW025A0B Series Power Modules; DC-DC Converters  
36 – 75Vdc Input; 12Vdc Output; 25A Output Current  
Test Configurations  
Design Considerations  
Input Source Impedance  
The power module should be connected to a low  
ac-impedance source. A highly inductive source  
impedance can affect the stability of the power module.  
For the test configuration in Figure 9, a 330μF  
electrolytic capacitor, Cin, (ESR<0.7Ω at 100kHz),  
mounted close to the power module helps ensure the  
stability of the unit. Consult the factory for further  
application guidelines.  
Safety Considerations  
Note: Measure input reflected-ripple current with a simulated  
source inductance (LTEST) of 12 µH. Capacitor CS offsets  
possible battery impedance. Measure current as shown above.  
Figure 9. Input Reflected Ripple Current Test Setup.  
For safety-agency approval of the system in which the  
power module is used, the power module must be  
installed in compliance with the spacing and separation  
requirements of the end-use safety agency standard,  
i.e., UL60950-1, CSA C22.2 No. 60950-1, and VDE  
EN60950-1.  
If the input source is non-SELV (ELV or a hazardous  
voltage greater than 60 Vdc and less than or equal to  
75Vdc), for the module’s output to be considered as  
meeting the requirements for safety extra-low voltage  
(SELV), all of the following must be true:  
ƒ
The input source is to be provided with reinforced  
insulation from any other hazardous voltages,  
including the ac mains.  
ƒ
One VIN pin and one VOUT pin are to be grounded, or  
both the input and output pins are to be kept  
floating.  
Note: Use a 1.0 µF ceramic capacitor and a 10 µF aluminum or  
tantalum capacitor. Scope measurement should be made  
using a BNC socket. Position the load between  
ƒ
ƒ
The input pins of the module are not operator  
accessible.  
Another SELV reliability test is conducted on the  
whole system (combination of supply source and  
subject module), as required by the safety agencies,  
to verify that under a single fault, hazardous  
voltages do not appear at the module’s output.  
51 mm and 76 mm (2 in. and 3 in.) from the module.  
Figure 10. Output Ripple and Noise Test Setup.  
Note: Do not ground either of the input pins of the  
module without grounding one of the output pins.  
This may allow a non-SELV voltage to appear  
between the output pins and ground.  
CONTACT AND  
DISTRIBUTION LOSSES  
V
The power module has safety extra-low voltage (SELV)  
outputs when all inputs are SELV.  
SUP
The input to these units is to be provided with a  
maximum 30 A fast-acting (or time-delay) fuse in the  
unearthed lead.  
CONTACT  
RESISTANCE  
Note: All measurements are taken at the module terminals.  
When socketing, place Kelvin connections at module terminals  
to avoid measurement errors due to socket contact resistance.  
Figure 11. Output Voltage and Efficiency Test Setup.  
LINEAGE POWER  
7