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FAN7888 — 3 Half-Bridge Gate-Drive IC
April 2016
FAN7888
3 Half-Bridge Gate-Drive IC
Features
Floating Channel for Bootstrap Operation to +200 V
Typically 350 mA / 650 mA Sourcing/Sinking Current
Description
The FAN7888 is a monolithic three half-bridge gate-drive
IC designed for high-voltage, high-speed driving MOS-
FETs 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 V
S
=-9.8 V (typical) for V
BS
=15 V.
The UVLO circuits prevent malfunction when V
DD
and
V
BS
are lower than the specified threshold voltage.
Output drivers typically source/sink 350 mA / 650 mA,
respectively, which is suitable for three-phase half-bridge
applications in motor drive systems.
Driving Capability for All Channels
3 Half-Bridge Gate Driver
Extended Allowable Negative V
S
Swing to -9.8 V for
Signal 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 All
Channels with 270 ns Typical Dead Time
Built-in Common Mode dv/dt Noise Canceling Circuit
Built-in UVLO Functions for All Channels
Applications
3-Phase Motor Inverter Driver
Related Resources
AN-6076 - Design and Application Guide of Bootstrap
1 Introduction
In the mid-1960s, American scientist Maas conducted extensive experimental research on the charging process of open-cell batteries and proposed an acceptable charging curve for ...[详细]
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