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User's Guide
SNVA676A–August 2012–Revised April 2013
AN-2285 LM34925 Isolated Evaluation Board
1 Introduction
An isolated bias supply is implemented in this evaluation board with LM34925 Constant-On-Time
regulator. The LM34925 regulator integrates both the high and low side power switches essential for
creating isolated buck converter.
The following include the board specifications:
• Input Range: 20V to 100V
• Primary Output Voltage: 10V
• Secondary (Isolated) Output Voltage: 9.5V
• Maximum Load Current (Primary + Secondary): 100mA
• Maximum Power Output: 1W
• Nominal Switching Frequency: 750kHz
• Efficiency (FIN = 24V, IOUT2 = 100mA): 70%
• Board size: 2 inch x 2 inch
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SNVA676A–August 2012–Revised April 2013 AN-2285 LM34925 Isolated Evaluation Board
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