Description

The FAD8253 is a monolithic half−bridge gate driver IC designed

for driving high voltage, high speed and high power IGBTs up to

+1200 V. The FAD8253 employs ON’s high−voltage process and

common−mode noise canceling technique to provide stable operation

of high−side driver under high dv/dt noise circumstances. The gate

driver includes UVLO circuits tailored to IGBT threshold for both

high side and low side outputs to prevent malfunction when VDD and

VBS are lower than the specified threshold voltage.

The FAD8253 offers a built−in low−side current detection circuitry

with an additional provision for soft shutdown (for low side) during

overcurrent or short−circuit conditions. The driver can provide

adequate protection during short−circuits by turning off its outputs

while simultaneously generating a fault output for fault reporting

purposes. The driver also provides additional flexibility by providing

a shutdown pin to disable driver outputs externally.

Features

• Floating Channel for Bootstrap Operation to +1200 V

• Peak Output Current Capability of 2.5 A Source/3.4 A Sink

• Allowable Negative VS Transient Swing of up to −15 V at

VBS = 15 V

• Built−in Common Mode dv/dt Noise Canceling Circuit

• Separate Power and Signal Ground for Enhanced dl/dt Immunity

• Matched Propagation Delay < 50 ns

• 3.3 V and 5 V Input Logic Compatible

• Built in Shoot−through Prevention Logic with 120 ns (Typ) Dead

Time

• Built−in UVLO Functions for both High and Low Side with

Thresholds Optimized for IGBTs

• Built−in Low Side Short−circuit Protection with Soft Shutdown

• In SOIC14NB with Non Connected Pins for High Voltage

Creepage and Clearance Requirements

• Fault Reporting during Overcurrent or Short−circuit Condition

• External Shutdown Pin to Enable or Disable Driver Outputs

• AEC−Q100 Qualified and PPAP Capable

• Pb−Free Devices

Typical Applications

• High Voltage Auxiliary Motor Drive

• Generic Half−Bridge and Full−Bridge Driver

• On−Board Chargers & DC/DC Converters

• Traction Inverters