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20IMX4-12-8 PDF预览

20IMX4-12-8

更新时间: 2024-01-24 05:57:03
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12页 682K
描述
IMX4 Series Data Sheet 4 Watt DC-DC Converters

20IMX4-12-8 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Transferred零件包装代码:DIP
包装说明:,针数:24
Reach Compliance Code:compliantECCN代码:EAR99
风险等级:5.2模拟集成电路 - 其他类型:DC-DC REGULATED POWER SUPPLY MODULE
最大输入电压:36 V最小输入电压:8.4 V
标称输入电压:20 VJESD-30 代码:R-XDMA-P7
最大负载调整率:3%功能数量:1
输出次数:1端子数量:7
最高工作温度:85 °C最低工作温度:-40 °C
最大输出电压:12.1 V最小输出电压:11.9 V
标称输出电压:12 V封装主体材料:UNSPECIFIED
封装形状:RECTANGULAR封装形式:MICROELECTRONIC ASSEMBLY
峰值回流温度(摄氏度):NOT SPECIFIED认证状态:Not Qualified
表面贴装:NO技术:HYBRID
温度等级:INDUSTRIAL端子形式:PIN/PEG
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
最大总功率输出:4.1 W微调/可调输出:NO
Base Number Matches:1

20IMX4-12-8 数据手册

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IMX4 Series Data Sheet  
4 Watt DC-DC Converters  
®
Thermal Considerations  
Connection in Parallel  
If a converter, mounted on a PCB, is located in free, quasi-  
stationary air (convection cooling) at the maximum ambient  
temperature TA max (see table Temperature specifications)  
and is operated at nominal input voltage and output power,  
the case temperature TC measured at the measuring point of  
case temperature TC (see Mechanical Data) will approach the  
indicated value TC max after the warm-up phase. However, the  
relationship between TA and TC depends heavily on the  
conditions of operation and integration into a system. The  
thermal conditions depend on input voltage, output current,  
airflow, temperature of surrounding components and surfaces  
and the properties of the printed circuit board. TA max is  
therefore only an indicative value, and under practical  
operating conditions, the ambient temperature TA may be  
higher or lower.  
Several converters with equal output voltage can be  
connected in parallel and will share their output current quite  
equally. However, this may cause start-up problems and is only  
recommended in applications, where one converter is able to  
deliver the full load current, e.g., in true redundant systems.  
Typical Performance Curves  
Vo [V]  
05056b  
5.25  
5.0  
4.75  
4.5  
Caution: The case temperature TC measured at the measuring  
point of case temperature TC (see Mechanical Data) may under no  
circumstances exceed the specified maximum. The installer must  
ensure that under all operating conditions TC remains within the  
limits stated in the table Temperature Specifications.  
4.25  
Io  
4.0  
0
0.1  
0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 A  
0.2  
Fig. 10  
Short Circuit Behavior  
Vo versus Io (typ) of single-output models (20IMX4-05)  
The current limitation shuts down the converter, when a short  
circuit is applied to the output. It acts self-protecting, and  
automatically recovers after removal of the overload condition.  
Vo1 + Vo2 [V]  
05057a  
31.5  
31  
05041a  
Vo [%]  
30.5  
30  
overload short circuit condition  
100  
switch-off  
70  
29.5  
29  
Io  
28.5  
0
20  
40  
60  
80  
100  
120 140 mA  
t [ms]  
0
0.3 s  
Fig. 11  
Fig. 9  
Vo versus Io (typ.) of dual-output models (±15 V), with load  
connected between Vo+ and Vo.  
Overload switch-off (hiccup mode).  
Vo1 [V]  
Output Overvoltage Protection  
05058a  
16.5  
The outputs are protected against overvoltages by Zener  
diodes. In the event of an overvoltage, the converter will shut-  
down and attempt to restart automatically. The main purpose  
of this feature is to protect against possible overvoltages,  
which could occur due to a failure in the feedback control  
circuit. The converters are not designed to withstand external  
overvoltages applied to the outputs.  
16  
15.5  
Io2 = 140 mA  
15  
Io2 = 14 mA  
14.5  
Connection in Series  
Io1  
140 mA  
14  
The outputs of single or dual-output models can be connected  
in series without any precautions, taking into consideration  
that the output voltage should remain below 60 V for SELV  
operation.  
0
120  
20  
40  
60  
80  
100  
Fig. 12  
Cross load regulation of dual-output models. Vo1 versus Io1  
(typ) for various Io2 (40IMX4-1515).  
BCD20006-G Rev AC, 06-Jul-2012  
Page 7 of 12  
www.power-one.com  

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