LM25101

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design LM25101 SNVS859C – JULY 2012 – REVISED SEPTEMBER 2016 LM25101 3-A, 2-A, and 1-A 80-V Half-Bridge Gate Drivers 1 Features 1 Independent High and Low Driver Logic Inputs Bootstrap Supply Voltage up to 100-V DC Drives Both a High-Side and Low-Side N-Channel MOSFETs Fast Propagation Times (25 ns Typical) Drives 1000-pF Load With 8-ns Rise and Fall Times Excellent Propagation Delay Matching (3 ns Typical) Supply Rail Undervoltage Lockout Low Power Consumption Pin Compatible With HIP2100 and HIP2101 2 Applications Motor-Controlled Drivers Half and Full Bridge Power Converters Synchronous Buck Converters Two Switch Forward Power Converters Forward With Active Clamp Converters 48-V Server Power Solar DC-DC and DC-AC Converters 3 Description The LM25101 high-voltage gate driver is designed to drive both the high-side and the low-side N-Channel MOSFETs in a synchronous buck or a half-bridge configuration. The A version provides a full 3-A of gate drive while the B and C versions provide 2-A and 1-A, respectively. The outputs are independently controlled with TTL input thresholds. An integrated high voltage diode is provided to charge the high-side gate drive bootstrap capacitor. A robust level shifter operates at high speed while consuming low power and providing clean level transitions from the control logic to the high-side gate driver. Undervol...