FAN7888: 225V, 3.3/5V input logic compatible, 0.65/0.35A sink/source current, 3-Phase Half-Bridge Gate-Drive IC

The FAN7888 is a monolithic three half-bridge gate-drive IC designed for high-voltage, high-speed driving MOSFETs and IGBTs operating up to +200 V.

Fairchild’s high-voltage process and common-mode noise canceling technique provide stable operation of high-side drivers under high-dv/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 prevent malfunction when VDD and VBS are lower than the specified threshold voltage.

Output drivers typically source / sink 350mA / 650mA, respectively, which is suitable for three-phase half-bridge applications in motor drive systems.

Features

• Floating Channel for Bootstrap Operation to +200 V
• Typically 350 mA / 650 mA Sourcing/Sinking Current Driving Capability for All Channels
• 3 Half-Bridge Gate Driver
• Extended Allowable Negative V_S Swing to -9.8 V forSignal Propagation at V_BS=15 V
• Matched Propagation Delay Time Maximum: 50 ns
• 3.3 V and 5 V Input Logic Compatible
• Built-in Shoot-Through Prevention Circuit for AllChannels with 270 ns Typical Dead Time
• Built-in Common Mode dv/dt Noise Canceling Circuit
• Built-in UVLO Functions for All Channels

Application Notes