1 Features

• 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. Undervoltage lockout is provided on both the low-side and the high-side power rails.

These devices are available in the standard 8-pin SOIC, 8-pin SO-PowerPAD, 8-pin WSON, 10-pin WSON, and 8-pin MSOP PowerPAD packages.

1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Application Diagram