LM5001ISOEVAL National Semiconductor, LM5001ISOEVAL Datasheet

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LM5001ISOEVAL

Manufacturer Part Number
LM5001ISOEVAL
Description
BOARD EVALUATION LM5001ISO
Manufacturer
National Semiconductor
Datasheets

Specifications of LM5001ISOEVAL

Main Purpose
DC/DC, Step Down
Outputs And Type
1, Isolated
Voltage - Output
5V
Current - Output
1A
Voltage - Input
16 ~ 42V
Regulator Topology
Flyback
Frequency - Switching
250kHz
Board Type
Fully Populated
Utilized Ic / Part
LM5001
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power - Output
-
© 2007 National Semiconductor Corporation
LM5001 Evaluation Board
Introduction
The LM5001 evaluation board is designed to provide the de-
sign engineer with a fully functional isolated flyback power
converter based on Current Mode Control to evaluate the
LM5001 switching regulator IC. The evaluation board pro-
vides a 5V output with 1A current capability. The input voltage
ranges from 16V to 42V. The design operates at 250kHz, a
good compromise between conversion efficiency and solution
size. The printed circuit board consists of 2 layers of 2 ounce
copper on FR4 material with a thickness of 0.062 inches. This
application note contains the evaluation board schematic,
Bill-of-Materials (BOM) and a quick setup procedure.
Evaluation Board Schematic
300096
National Semiconductor
Application Note 1588
Steven Schulte
February 2007
Refer to the LM5001 datasheet for complete circuit design
information.
The performance of the evaluation board is as follows:
Input Range: 16 to 42V
Output Voltage: 5V, ±2%
Output Current: 0 to 1A
Frequency of Operation: 250 kHz
Board Size: 2.75 X 1.75 X 0.6 inches
Load Regulation: 0.1%
Line Regulation: 0.1%
Over Current Limiting
www.national.com
30009601

Related parts for LM5001ISOEVAL

LM5001ISOEVAL Summary of contents

Page 1

... The printed circuit board consists of 2 layers of 2 ounce copper on FR4 material with a thickness of 0.062 inches. This application note contains the evaluation board schematic, Bill-of-Materials (BOM) and a quick setup procedure. Evaluation Board Schematic © 2007 National Semiconductor Corporation National Semiconductor Application Note 1588 Steven Schulte February 2007 Refer to the LM5001 datasheet for complete circuit design information ...

Page 2

... SYNC pins together. Refer to the LM5001 datasheet for complete information. FLYBACK TOPOLOGY An excellent introduction to the isolated flyback converter is available on the National Semiconductor website. The Appli- cation Note AN-1095 discusses both loop compensation with a secondary side error amplifier and the phase-shift caused by opto-couplers. ...

Page 3

Performance Characteristics EFFICIENCY PLOTS Figure 1 shows the conversion efficiency versus output cur- rent for several input voltage conditions. FIGURE 1. TURN-ON WAVEFORM When applying power to the LM5001 evaluation board a soft- start sequence occurs. Figure 2 shows the ...

Page 4

Layout and Bill of Materials The Bill of Materials is shown below, including the manufacturer and part number. DESIGNATOR QTY PART NUMBER C1,2 2 C3225X7R1H225K C3,16 2 C2012X7R2A104K C4 C2012X7R2A103K C5 1 C0805C101M5RAC C6 C2012X7R1A105K ...

Page 5

PCB Layout Component Side Solder Side 5 30009607 30009608 www.national.com ...

Page 6

... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...

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