1 Features

• Qualified for Automotive Applications
• AEC-Q100 Qualified with the Following Results:
  • Device Temperature Grade 1
  • Device HBM ESD Classification Level H2
  • Device CDM ESD Classification Level C4B
• Low Cost Gate Driver (Offering Optimal Solution for Driving Fet And Igbts)
• Superior Replacement to Discrete Transistor Pair Drive (Providing Easy Interface With Controller)
• TTL and CMOS Compatible Input Logic Threshold, (Independent of Supply Voltage)
• Split Output Options Allow for Tuning of Turn-On and Turn-Off Currents
• Enable with Fixed TTL Compatible Threshold
• High 2.5-A Source and 5-A Sink Peak Drive Currents at 18-V VDD
• Wide VDD Range From 10 V up to 35 V
• Input and Enable Pins Capable of Withstanding up to –5-V DC Below Ground
• Output Held Low When Inputs are Floating or During VDD UVLO
• Fast Propagation Delays (17-ns Typical)
• Fast Rise and Fall Times
  (15-ns and 7-ns Typical With 1800-pF Load)
• Undervoltage Lockout (UVLO)
• Used as a High-Side or Low-Side Driver (if Designed With Proper Bias and Signal Isolation)
• Low-Cost, Space-Saving 6-Pin DBV (SOT-23) Package Options
• Operating Temperature Range of –40°C to 140°C

2 Applications

• Automotive
• Switch-Mode Power Supplies
• DC-to-DC Converters
• Solar Inverters, Motor Control, UPS
• HEV and EV Chargers
• Home Appliances
• Renewable Energy Power Conversion
• SiC FET Converters

3 Description

The UCC27531-Q1 is a single-channel, high-speed, gate driver capable of effectively driving MOSFET and IGBT power switches by using up to 2.5-A source and 5-A sink (asymmetrical drive) peak current. Strong sink capability in asymmetrical drive boosts immunity against parasitic Miller turn-on effect. The UCC27531-Q1 device can also feature a split-output configuration where the gate-drive current is sourced through the OUTH pin and sunk through the OUTL pin. This pin arrangement allows the user to apply independent turn-on and turn-off resistors to the OUTH and OUTL pins respectively and easily control the switching slew rates.

The driver has rail-to-rail drive capability and an extremely small propagation delay of typically 17 ns.

The input threshold of UCC27531-Q1 is based on TTL and CMOS compatible low-voltage logic, which is fixed and independent of VDD supply voltage. The 1-V typical hysteresis offers excellent noise immunity.

1. For all available packages, see the orderable addendum at the end of the data sheet.

Driving IGBT Without Negative Bias