User's Guide
SNVA470B – February 2011 – Revised May 2013
AN-2115 LM5046 Evaluation Board
1
Introduction
The LM5046 evaluation board is designed to provide the design engineer with a fully functional power
converter based on the phase-shifted full-bridge topology to evaluate the LM5046 PWM controller. The
evaluation board is provided in an industry standard quarter brick footprint.
The performance of the evaluation board is as follows:
• Input operating range: 36V to 75V
• Output voltage: 3.3V
• Measured efficiency at 48V: 92% @ 30A
• Frequency of operation: 420kHz
• Board size: 2.28 × 1.45 × 0.5 inches
• Load Regulation: 0.2%
• Line Regulation: 0.1%
• Line UVLO (34V/32V on/off)
• Hiccup Mode Current Limit
The printed circuit board consists of 6 layers; 2 ounce copper outer layers and 3 ounce copper inner
layers on FR4 material with a total thickness of 0.062 inches. The unit is designed for continuous
operation at rated load at
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