LM5050MK-1EVAL/NOPB National Semiconductor, LM5050MK-1EVAL/NOPB Datasheet

LM5050MK-1EVAL/NOPB

Manufacturer Part Number

LM5050MK-1EVAL/NOPB

Description

LM5050 EVAL BOARD

Manufacturer

National Semiconductor

Series

-r

Datasheets

1.LM5050MK-1EVALNOPB.pdf (16 pages)

2.LM5050MK-1EVALNOPB.pdf (6 pages)

Specifications of LM5050MK-1EVAL/NOPB

Main Purpose

Power Management, ORing Controller / High Side

Embedded

Utilized Ic / Part

LM5050

Primary Attributes

Secondary Attributes

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

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LM5050-1EVAL Evaluation

Board

Introduction

The LM5050-1 evaluation board is designed to demonstrate

the capabilities of the LM5050-1 OR-ing Diode Controller.

One high side N-channel power MOSFET is used. The

LM5050-1 evaluation board schematic is shown in

The evaluation board is designed to highlight applications

with a small solution size. For more information about

LM5050-1 functional and electrical characteristics, refer to the

LM5050-1 datasheet.

Operating Range

•

To aid in the demonstration and evaluation of high-side OR-

ing diode controller solution based on the LM5050-1.

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

out is shown in

for optional control and signal monitoring.

Evaluation Board Start-Up

Before applying power to the LM5050-1 evaluation board, all

external connections should be verified. The external power

supply must be turned off and connected with proper polarity

to the VS, VIN, VOUT, and GND terminals. Under basic eval-

uation conditions the Off test point is left 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.

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

Figure 7

Figure 1

and

Figure

through

8. Test points are provided

Figure

301334

2. The PCB lay-

Figure

National Semiconductor

Application Note 2087

Donald P. Jones

April 26, 2011

FIGURE 1. Forward Waveforms

FIGURE 2. Reverse Waveforms

www.national.com

30133412

30133413

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LM5050MK-1EVAL/NOPB Summary of contents

Page 1

... Off test point is left 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. © 2011 National Semiconductor Corporation National Semiconductor Application Note 2087 Donald P. Jones ...

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 30133404 30133407 www.national.com ...

Page 4

FIGURE 7. Evaluation Board, Top Side (Component) FIGURE 8. Evaluation Board, Bottom Side 4 30133405 30133406 ...

Page 5

... GND Manufacturer Mfgr Part Number National Semiconductor Corporation Vishay/Vitramon VJ1825Y105KBBAT4X Panasonic/ECG Murata Electronics North GRM32NR72A104KA01L America ON Semiconductor Micro Commercial Components Diodes Inc - Vishay/Siliconix SUM40N10-30-E3 Vishay/Dale CRCW0603100RFKEA ROHM Semiconductor MCR03EZPFX1000 - Keystone Electronics Keystone Electronics 5 LM5050MK-1 EEE-HA2A220P SS16T3G SS16-TP SMBJ60A-13 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 www.national.com/ldo LED Lighting www ...

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