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FAN73895 — 3-Phase Half-Bridge Gate-Drive IC
October 2015
FAN73895
3-Phase Half-Bridge Gate-Drive IC
Features
Floating Channel for Bootstrap Operation to +600 V
Typically 350 mA/650 mA Sourcing/Sinking
Current-Driving Capability for All Channels
Extended Allowable Negative V
S
Swing to -9.8 V for
Signal Propagation at V
DD
=V
BS
=15 V
Output In- Phase with Input Signal
Over-Current Shutdown Turns Off All Six Drivers
Matched Propagation Delay for All Channels
3.3 V and 5.0 V Input Logic Compatible
Adjustable Fault-Clear Timing
Built-in Advanced Input Filter
Built-in Shoot-Through Prevention Logic
Built-in Soft Turn-Off Function
Common-Mode dv/dt Noise-Canceling Circuit
Built-in UVLO Functions for All Channels
Description
The FAN73895 is a monolithic three-phase half-bridge
gate-drive IC designed for high-voltage, high-speed,
driving MOSFETs and IGBTs operating up to +600 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 protection functions include under-voltage lockout
and inverter over-current trip with an automatic fault-
clear function. Over-current protection that terminates all
six outputs can be derived from an external current-
sense resistor. An open-drain fault signal is provided to
indicate that an over-current or under-voltage shutdown
has occurred. The UVLO circuits prevent malfunction
when V
DD
and V
BS
are lower than the threshold voltage.
Output drivers typically source and sink 350 mA and
650 mA, respectively; which is suitable for three-phase
half-bridge applications in motor drive systems.
Applications
3-Phase Motor Inverter Driver
Air Conditioner, Washing Machine, Refrigerator,
Dish Washer
Industrial Inverter – Sewing Machine, Power Tool
General-Purpose Three-Phase Inverter
Figure 1. 28-SOIC
Ordering Information
Part Number
FAN73895MX
(1)
Package
28-Lead, Small Outline Integrated Circuit, (SOIC)
Operating
Temperature
-40 to +125°C
Packing
Method
Tape & Reel
Note:
1. These devices passed wave-soldering test by JESD22A-111.
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