MP18021A 2.5A High Frequency Half-Bridge Gate Driver SOIC8E

MP18021A 2.5A High Frequency Half-Bridge Gate Driver SOIC8E

The MP18021A is a high-frequency, 100V, half bridge, N-channel power MOSFET driver.

Key Specifications

Features

• Drives N-Channel MOSFET Half Bridge
• 100V VBST Voltage Range
• On-Chip Bootstrap Diode
• Typical 16ns Propagation Delay Time
• Less Than 5ns Gate Drive Matching
• Drives 1nf Load with 12ns/9ns Rise/Fall Times with 12V VDD
• TTL Compatible Input
• Less Than 150A Quiescent Current
• UVLO for Both High Side and Low Side
• In SOIC8E and QFN8 (3×3mm) Packages

Typical Application Circuit

Applications

• Telecom Half Bridge Power Supplies
• Avionics DC-DC Converters
• Two-Switch Forward Converters

Design Notes

• The current-limit threshold must stay inside the SOA of the pass device at the applied voltage, including startup inrush.
• Hot-swap inrush control is set by the slew rate on the gate or the dV/dt capacitor — too fast trips the upstream supply.
• Reverse-current blocking behaviour differs between ideal-diode and load-switch topologies; pick the one that matches the fault you are protecting against.
• Route the fault flag to a pin the firmware actually polls; a latch-off protection with no report looks like a dead board in the field.

Common Questions