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LM5050MK-2 PDF预览

LM5050MK-2

更新时间： 2024-10-01 11:36:39
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美国国家半导体 - NSC /
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6页 709K
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EVAL Evaluation Board Minimum Input Voltage, 6V

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LM5050MK-2 数据手册

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National Semiconductor  
Application Note 2051  
Donald P. Jones  
LM5050-2EVAL Evaluation  
Board  
November 1, 2010  
Introduction  
The LM5050-2 evaluation board is designed to demonstrate  
the capabilities of the LM5050-2 OR-ing Diode Controller. It  
is intended for evaluation of the functions of the LM5050-2.  
One high side N-channel power MOSFET is used. The  
LM5050-2 evaluation board schematic is shown in Figure 5.  
The evaluation board is designed to highlight applications  
with a small solution size. For more information about the  
LM5050-2 functional and electrical characteristics, refer to the  
LM5050-2 datasheet.  
Operating Range  
•
•
•
•
•
Minimum Input Voltage, 6V  
Maximum Input Voltage, 50V  
Output Current Range: 0A to 15A  
Ambient Temperature Range 0°C to 50°C  
Board Size 1.50 inches x 2.25 inches  
30121312  
To aid in the demonstration and evaluation of high-side OR-  
ing diode controller solution based on the LM5050-2.  
FIGURE 1. Forward Waveforms  
The load current capability is limited at 15A by the ratings of  
the terminals and the PCB copper area and weight. The PCB  
layout has not been tested for currents above 15A, so this  
should only be done with some degree of caution.  
The maximum input voltage is limited by the breakdown volt-  
age rating of both D1 and D2.  
Typical evaluation board performance and characteristics  
curves are shown in through . The PCB layout is shown in  
and . Test points are provided for optional control and signal  
monitoring.  
Evaluation Board Start-Up  
Before applying power to the LM5050-2 evaluation board, all  
external connections should be verified. The external power  
supply must be turned off and connected with proper polarity  
to the VIN, VOUT, and GND terminals. Under basic evalua-  
tion conditions the nPGD, VLOGIC, and Off test points are left  
open.  
30121313  
The evaluation board will be in the normal operating mode  
when power is applied. The Off terminal is used only when  
there is a desire to disable normal operation and invoke the  
MOSFET test comparator.  
FIGURE 2. Reverse Waveforms  
© 2010 National Semiconductor Corporation  
301213  
www.national.com  
123456

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