User's Guide
SNVA285A–October 2007–Revised April 2013
AN-1713 LM5116-12 Evaluation Board
1 Introduction
The LM5116-12 evaluation board is designed to provide the design engineer with a fully functional power
converter based on Emulated Current Mode Control to evaluate the LM5116 controller IC. The evaluation
board provides a 12V output with a 5A current capability. The operating input voltage ranges from 15V to
80V. The design operates at 250kHz, a good compromise between conversion efficiency and solution
size. The printed circuit board consists of 4 layers, 2 ounce copper top and bottom, 1 ounce copper
internal layers on FR4 material with a thickness of 0.06 inches. This user's guide contains the evaluation
board schematic, Bill-of-Materials (BOM), and a quick setup procedure. For complete circuit design
information, see LM5116 Wide Range Synchronous Buck Controller (SNVS499).
The performance of the evaluation board is:
• Input Range: 15V to 80V
• Output Voltage: 12V
• Output Current: 0 to 5A
• Frequency of Operation: 250 kHz
• Board Size: 2.55 × 2.65 × 0.7 inches
• Load Regulation: 1%
• Line Regulation: 0.1%
• Hiccup Mode Current Limit Protection
Figure 1. Efficiency with 10 µH Gowanda Inductor Figure 2. Efficiency with 10 µH Pulse Inductor
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SNVA285A–October 2007–Revised April 2013 AN-1713 LM5116-12 Evaluation Board
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