FAN7842 Datasheet, PDF (1/13 Pages) Fairchild Semiconductor – Half Bridge Gate Driver

January 2006
FAN7842
Half Bridge Gate Driver
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
Applications
■ Half and Full Bridge Converters
■ Current Fed Push-Pull Converters
■ Synchronous Buck Converters
Description
The FAN7842, a monolithic half-bridge gate driver IC, can drive
MOSFETs and IGBTs which operate up to +200V. Fairchild’s
high voltage process and common-mode noise canceling tech-
nique provides 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 mal-
function when VCC and VBS are lower than the specified
threshold voltage. Output driver current(source/sink) is typi-
cally 350mA/650mA, respectively.
8 SOP
1
Ordering Information
Part Number
FAN7842M
FAN7842MX
Operating Temp.
Range
-40°C to +125°C
Pb-Free
Yes
Package
8-SOP
Packing Method
Tube
Tape & Reel
©2006 Fairchild Semiconductor Corporation
1
FAN7842 Rev.1.0.0
www.fairchildsemi.com