3-Phase Half-Bridge Gate-Drive IC

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Overview

The FAN73894 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.
ON Semiconductor’s high-voltage process and common-mode noise-canceling technique provide stable operation of high-side drivers under high-dVs/dt noise circumstances.
An advanced level-shift circuit allows high-side gate driver operation up to VS = -9.8 V (typical) for VBS =15 V.
The protection functions include under-voltage lockout, inter-lock function 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 VDD and VBS 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.

  • AC-DC Merchant Power Supply
  • Consumer
  • Consumer Appliances
  • Industrial Motor
  • Motion
  • Motion Control - Home Appliance
  • Motion Control - Home Appliance/Industrial Motor
  • Motion Control - Industrial Motor
  • Motion-Industrial motor
  • Floating Channel for Bootstrap Operation to +600 V
  • Typically 350 mA/650 mA Sourcing/Sinking Current-Driving Capability for All Channels
  • Extended Allowable Negative VS Swing to -9.8 V for Signal Propagation at VDD=VBS=15 V
  • Outputs Out of Phase with Input Signals
  • 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
  • Signal Interlocking of Every Phase to Prevent Cross-Conduction
  • Common-Mode dVs/dt Noise-Canceling Circuit
  • Built-in Advanced Input Filter
  • Built-in Soft Turn-Off Function
  • Built-in Under-Voltage Lockout (UVLO) Functions for All Channels

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Pricing ($/Unit)

FAN73894MX

Active

CAD Model

Pb

A

H

P

SOIC-28W

3

260

REEL

1000

Y

MOSFET / IGBT

6

Three Phase

Junction Isolation

625

12

50

30

0.35

0.65

500

500

50

$1.2897

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