FAN7842: 225V,TTL input logic compatible 0.65/0.35A sink/source current, High & Low Side Gate-Drive

The FAN7842, a monolithic half-bridge gate-drive IC, can drive MOSFETs and IGBTs that operate up to +200V. Fairchild’s high-voltage process and common-mode noise canceling technique provide stable operation of the high-side driver under high-dv/dt noise circumstances. An advanced level-shift circuit allows high-side gate driver operation up to VS=-9.8 V(typ.) for VBS=15V. The input logic level is compatible with standard TTL series logic gates. UVLO circuits for both channels prevent malfunction when VCC and VBS are lower than the specified threshold voltage. Output driver current(source/sink) is typically 350mA/650mA, respectively.

Features

• Floating Channels Designed for Bootstrap Operation to +200V
• Typically 350mA/650mA Sourcing/Sinking Current Driving Capability for Both Channels
• Common-Mode dv/dt Noise Canceling Circuit
• Extended Allowable Negative VS Swing to -9V for Signal Propagation @ VCC=VBS=15V
• VCC & VBS Supply Range from 10V to 20V
• UVLO Functions for Both Channels
• TTL-Compatible Input Logic Threshold Levels
• Matched Propagation Delay Below 50nsec
• Output In-phase with Input Signal

Application Notes