LM5100B

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM5100A, LM5100B, LM5100C LM5101A, LM5101B, LM5101C SNOSAW2Q – SEPTEMBER 2006 – REVISED NOVEMBER 2015 LM5100A/B/C, LM5101A/B/C 3-A, 2-A, and 1-A High-Voltage, High-Side and Low-Side Gate Drivers 1 Features 1 Drives Both a High-Side and Low-Side N-Channel MOSFETs Independent High- and Low-Driver Logic Inputs Bootstrap Supply Voltage up to 118 V DC 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/HIP2101 2 Applications Current-Fed Push-Pull Converters Half and Full Bridge Power Converters Synchronous Buck Converters Two Switch Forward Power Converters Forward with Active Clamp Converters 3 Description The LM5100A/B/C and LM5101A/B/C high-voltage gate drivers are designed to drive both the high-side and the low-side N-Channel MOSFETs in a synchronous buck or a half-bridge configuration. The floating high-side driver is capable of operating with supply voltages up to 100 V. The A versions provide 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 CMOS input thresholds (LM5100A/B/C) or TTL input thresholds (LM5101A/B/C). An integrated high-voltage diode is provided to charge the high-side gate drive bootstrap c...