LM5050MK-2 NSC [National Semiconductor], LM5050MK-2 Datasheet

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LM5050MK-2

Manufacturer Part Number
LM5050MK-2
Description
EVAL Evaluation Board Minimum Input Voltage, 6V
Manufacturer
NSC [National Semiconductor]
Datasheet
1.LM5050MK-2.pdf (6 pages)

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© 2010 National Semiconductor Corporation
LM5050-2EVAL Evaluation
Board
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
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
•
•
•
•
•
To aid in the demonstration and evaluation of high-side OR-
ing diode controller solution based on the LM5050-2.
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, V
open.
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.
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
LOGIC
, and Off test points are left
301213
Figure
5.
National Semiconductor
Application Note 2051
Donald P. Jones
November 1, 2010
FIGURE 1. Forward Waveforms
FIGURE 2. Reverse Waveforms
www.national.com
30121312
30121313

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LM5050MK-2 Summary of contents

Page 1

LM5050-2EVAL Evaluation Board Introduction The LM5050-2 evaluation board is designed to demonstrate the capabilities of the LM5050-2 OR-ing Diode Controller intended for evaluation of the functions of the LM5050-2. One high side N-channel power MOSFET is used. The ...

Page 2

Inductive Kick-Back Protection Diode D1 and capacitor C1 serve as inductive kick-back pro- tection to limit negative transient voltage spikes generated on the input when the input supply voltage is abruptly taken to zero volts. Diode D2 and capacitor C2 ...

Page 3

FIGURE 4. Connection Diagram FIGURE 5. Schematic Diagram FIGURE 6. Component Placement 3 30121304 30121307 www.national.com ...

Page 4

FIGURE 7. Evaluation Board, Top Side (Component) FIGURE 8. Evaluation Board, Bottom Side 4 30121305 30121306 ...

Page 5

... Test Point Terminal: 0.040in Dia Mtg Hole; V LOGIC White GND GND Manufacturer Mfgr Part Number National Semiconductor Corporation Vishay/Vitramon VJ1825Y105KBBAT4X Panasonic/ECG - ON Semiconductor Micro Commercial Components Diodes Inc Vishay/Siliconix SUM40N10-30-E3 - Vishay/Dale CRCW060310K0FKEA ROHM Semiconductor MCR03EZPFX1002 Keystone Electronics Keystone Electronics 5 LM5050MK-2 EEE-HA2A220P - SS16T3G SS16-TP SMBJ60A-13-F - 7693 5012 www.national.com ...

Page 6

For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs ...

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