Texas Instruments LM25101
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.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
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 highside power rails.