The FAN7842 is a monolithic high and low side gate driver IC that can drive MOSFETs and IGBTs operating up to +200V. It features floating channels, sourcing/sinking current driving capability of typically 350mA/650mA, common-mode dv/dt noise canceling circuit, extended allowable negative VS swing, UVLO functions, and TTL-compatible input logic threshold levels. It is suitable for applications such as half- and full-bridge converters, current-fed push-pull converters, and synchronous buck converters.
The FAN7842 is a monolithic high and low side gate drive IC designed to drive MOSFETs and IGBTs that operate up to +200V. It utilizes Fairchild's high-voltage process and common-mode noise canceling technique to ensure stable operation under high-dv/dt noise circumstances. The device features floating channels designed for bootstrap operation and includes UVLO functions for both channels to prevent malfunction when supply voltages are below specified thresholds.
| High-side offset voltage | VB-25 to VB+0.3 V |
|---|---|
| High-side floating supply voltage | -0.3 to 225 V |
| Low-side and logic fixed supply voltage | -0.3 to 25 V |
| Output driver current (source/sink) | 350mA/650mA |
| Power dissipation | 0.625 W |
| Junction temperature | 150 °C |
The device can drive MOSFETs and IGBTs that operate up to +200V.
The output driver current is typically 350mA for sourcing and 650mA for sinking.
The extended allowable negative VS swing is -9.8V for signal propagation at VCC=VBS=15V.