FL73282: Half-Bridge Gate Driver

The FL73282, a monolithic half bridge gate-drive IC, can drive MOSFETs and IGBTs that operate up to +900 V. Fairchild’s high-voltage process and common mode noise canceling technique provides stable operation of the high-side driver under high-dVS/dt noise circumstances. An advanced level-shift circuit allows high-side gate driver operation up to VS=-9.8 V (typical) for VBS=15 V. The UVLO circuits for both channels prevent malfunction when VCC or VBS is lower than the specified threshold voltage. Output drivers typically source/sink 350 mA / 650 mA, respectively, which is suitable for all kinds of half- and full-bridge inverters.

Features

• Floating Channel for Bootstrap Operation to +900 V
• Typically 350 mA / 650 mA Sourcing/Sinking Current Driving Capability for Both Channels
• Common-Mode dv/dt Noise Canceling Circuit
• Extended Allowable Negative V_S Swing to -9.8 V for Signal Propagation at V_CC=V_BS=15 V
• V_CC & V_BS Supply Range from 10 V to 20 V
• UVLO Functions for Both Channels
• Matched Propagation Delay Below 50 ns
• Built-in 170 ns Dead-Time
• Output in Phase with Input Signal

Application Notes