AN-1588| Application Note

LM5001 Evaluation Board

National Semiconductor Application Note 1588 Steven Schulte February 2007

Introduction
The LM5001 evaluation board is designed to provide the design engineer with a fully functional isolated flyback power converter based on Current Mode Control to evaluate the LM5001 switching regulator IC. The evaluation board provides 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.

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

Evaluation Board Schematic

30009601

AN-1588

2007 National Semiconductor Corporation

300096

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