LM5035EVAL

User's Guide SNVA143A – January 2006 – Revised May 2013 AN-1435 LM5035 Evaluation Board 1 Introduction The LM5035 evaluation board is designed to provide the design engineer with a fully functional power converter based on the Half Bridge topology to evaluate the LM5035 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 • Output current: 0 to 30A • Measured efficiency: 89% at 30A, 92% at 15A • Frequency of operation: 400kHz • Board size: 2.28 x 1.45 x 0.5 inches • Load Regulation: 0.2% • Line Regulation: 0.1% • Line UVLO (33.9V/31.9V on/off) • Line OVP (79.4V/78.3V off/on) • Hiccup 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