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MEW1000_13 参数 Datasheet PDF下载

MEW1000_13图片预览
型号: MEW1000_13
PDF下载: 下载PDF文件 查看货源
内容描述: DC / DC转换器2W高功率密度的SIP- 9封装 [DC/DC CONVERTER 2W High Power Density in SIP-9 Package]
分类和应用: 转换器
文件页数/大小: 4 页 / 655 K
品牌: MINMAX [ MINMAX TECHNOLOGY CO., LTD. ]
 浏览型号MEW1000_13的Datasheet PDF文件第1页浏览型号MEW1000_13的Datasheet PDF文件第2页浏览型号MEW1000_13的Datasheet PDF文件第3页  
®
MEW1000 SERIES  
DC/DC CONVERTER 2W, SIP-Package  
Test Setup  
Input Reflected-Ripple Current Test Setup  
Input reflected-ripple current is measured with a inductor Lin (4.7µH) and Cin (220µF, ESR < 1.0Ω at 100 KHz) to simulate source impedance. Capacitor Cin, offsets  
possible battery impedance.  
Current ripple is measured at the input terminals of the module, measurement bandwidth is 0-500 KHz.  
To Oscilloscope  
+Vin  
+Out  
+
+
Lin  
DC / DC  
Converter  
Current  
Probe  
Load  
Battery  
Cin  
-Vin  
-Out  
Peak-to-Peak Output Noise Measurement Test  
Use a Cout 0.47µF ceramic capacitor. Scope measurement should be made by using a BNC socket, measurement bandwidth is 0-20 MHz. Position the load  
between 50 mm and 75 mm from the DC/DC Converter.  
Copper Strip  
Cout  
+Vin  
+Out  
Copper Strip  
Cout  
+Vin  
+Out  
Com.  
-Out  
Scope  
Scope  
Single Output  
DC / DC  
Converter  
Dual Output  
DC / DC  
Converter  
Resistive  
Load  
Resistive  
Load  
Scope  
Copper Strip  
Cout  
-Vin  
-Out  
Copper Strip  
-Vin  
Copper Strip  
Technical Notes  
Remote On/Off  
Negative logic remote on/off turns the module off during a logic high voltage on the remote on/off pin, and on during a logic low. To turn the power module on and off,  
the user must supply a switch to control the voltage between the on/off terminal and the -Vin terminal. The switch can be an open collector or equivalent.  
A logic high is 2.9V to 15V. A logic low is under 0.6 VDC or open circuit, drops down to 0VDC by 2mV/. The maximum sink current at on/off terminal during a  
logic low is 1 mA. The maximum allowable leakage current of the switch at on/off terminal =(under 0.6VDC or open circuit) is 1mA.  
Maximum Capacitive Load  
The MEW1000 series has limitation of maximum connected capacitance at the output. The power module may be operated in current limiting mode during start-up,  
affecting the ramp-up and the startup time. The maximum capacitance can be found in the data sheet.  
Overcurrent Protection  
To provide protection in a fault (output overload) condition, the unit is equipped with internal current limiting circuitry and can endure current limiting for an unlimited  
duration. At the point of current-limit inception, the unit shifts from voltage control to current control. The unit operates normally once the output current is brought back  
into its specified range.  
Input Source Impedance  
The power module should be connected to a low ac-impedance input source. Highly inductive source impedances can affect the stability of the power module.  
In applications where power is supplied over long lines and output loading is high, it may be necessary to use a capacitor on the input to insure startup.  
By using a good quality low Equivalent Series Resistance (ESR < 1.0Ω at 100 kHz) capacitor of a 1.5µF for the 24V and 48V devices, capacitor mounted close to the  
power module helps ensure stability of the unit.  
+
+Vin  
+Out  
+
DC / DC  
Converter  
DC Power  
Source  
Load  
Cin  
-
-Vin  
-Out  
Output Ripple Reduction  
A good quality low ESR capacitor placed as close as practicable across the load will give the best ripple and noise performance. To reduce output ripple, it is  
recommended to use 3.3µF capacitors at the output.  
+
+Vin  
-Vin  
+Out  
+
+Vin  
+Out  
Single Output  
DC / DC  
Converter  
Load  
Load  
Dual Output  
DC Power  
Source  
Cout  
Cout  
DC Power  
Source  
DC / DC Com.  
Converter  
Cout  
Load  
-
-Out  
-
-Vin  
-Out  
Thermal Considerations  
Many conditions affect the thermal performance of the power module, such as orientation, airflow over the module and board spacing. To avoid exceeding the  
maximum temperature rating of the components inside the power module, the case temperature must be kept below 90. The derating curves are determined  
from measurements obtained in a test setup.  
Position of air velocity  
probe and thermocouple  
Air Flow  
50mm / 2in  
15mm / 0.6in  
DUT  
Minmax Technology Co., Ltd.  
18, Sin Sin Road, An-Ping Industrial District, Tainan 702, Taiwan  
Tel: 886-6-2923150 Fax: 886-6-2923149 E-mail: sales@minmax.com.tw  
2013/02/04 REV:7  
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