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FAN7842 High- and Low-Side Gate Driver
August 2016
FAN7842
High- and Low-Side Gate Driver
Features
Floating Channels Designed for Bootstrap Operation
Description
The FAN7842, a monolithic high and low side gate drive
IC, which can drive MOSFETs and IGBTs that operate up
to +200 V.
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 V
S
=-9.8V (typical) for V
BS
=15V.
The input logic level is compatible with standard TTL-
series logic gates.
The UVLO circuits for both channels prevent malfunction
when V
CC
and V
BS
are lower than the specified threshold
voltage. Output driver current (source/sink) is typically
350mA/650mA, respectively.
to +200 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
TTL Compatible Input Logic Threshold Levels
Matched Propagation Delay Below 50 nsec
Output In-phase with Input Signal
Applications
Battery based motor applications (E-bike, Power Tool)
Telecom DC-DC converter
Related Resources
AN-6076 - Design and Application Guide of Bootstrap
8-SOP
Circuit for High-Voltage Gate-Drive IC
AN-9052 - Design Guide for Selection of Bootstrap
Components
AN-8102 - Recommendations to Avoid Short Pulse
Width Issues in HVIC Gate Driver Applications
Ordering Information
Part Number
FAN7842MX
(1)
Note:
1. These devices passed wave soldering test by JESD22A-111.
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