SLVSCO2A August   2014  – September 2014 UCC27511A-Q1


  1. Features
  2. Applications
  3. Description
  4. Typical Application Diagrams
  5. Revision History
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 Handling Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Switching Characteristics
    7. 7.7 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 VDD and Undervoltage Lockout
      2. 8.3.2 Operating Supply Current
      3. 8.3.3 Input Stage
      4. 8.3.4 Enable Function
      5. 8.3.5 Output Stage
      6. 8.3.6 Low Propagation Delays
    4. 8.4 Device Functional Modes
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. Input-to-Output Logic
        2. Input Threshold type
        3. VDD Bias Supply Voltage
        4. Peak Source and Sink Currents
        5. Enable and Disable Function
        6. Propagation delay
        7. Thermal Information
        8. Power Dissipation
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Trademarks
    2. 12.2 Electrostatic Discharge Caution
    3. 12.3 Glossary
  13. 13Mechanical, Packaging, and Orderable Information



1 Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Low-Cost Gate-Driver Device Offering Superior Replacement of NPN and PNP Discrete Solutions
  • 4-A Peak Source and 8-A Peak Sink Asymmetrical Drive
  • Strong Sink Current Offers Enhanced Immunity Against Miller Turnon
  • Split Output Configuration (Allows Easy and Independent Adjustment of Turnon and Turnoff Speeds) in the UCC27511A-Q1
  • Fast Propagation Delays (13-ns typical)
  • Fast Rise and Fall Times (9-ns and 7-ns typical)
  • 4.5 to 18-V Single Supply Range
  • Outputs Held Low During VDD UVLO (Ensures Glitch-Free Operation at Power Up and Power Down)
  • TTL and CMOS Compatible Input-Logic Threshold (Independent of Supply Voltage)
  • Hysteretic-Logic Thresholds for High-Noise Immunity
  • Dual-Input Design (Choice of an Inverting (IN– Pin) or Non-Inverting (IN+ Pin) Driver Configuration)
    • Unused Input Pin can be Used for Enable or Disable Function
  • Output Held Low when Input Pins are Floating
  • Input Pin Absolute Maximum Voltage Levels Not Restricted by VDD Pin Bias Supply Voltage
  • Input Pins Capable of Withstanding –5-V DC Below GND pin
  • Operating Temperature Range of –40°C to 140°C
  • 6-Pin DBV (SOT-23) Package Option

2 Applications

  • Switch-Mode Power Supplies
  • DC-to-DC Converters
  • Companion Gate-Driver Devices for Digital Power Controllers
  • Solar Power, Motor Control, UPS
  • Gate Driver for Emerging Wide Band-Gap Power Devices (such as GaN)

3 Description

The UCC27511A-Q1 device is a compact gate driver that offers superior replacement of NPN and PNP discrete driver (buffer circuit) solutions. The UCC27511A-Q1 device is an automotive-grade single-channel low-side, high-speed gate driver rated for MOSFETs, IGBTs, and emerging wide-bandgap power devices such as GaN. The device features fast rise times, fall times, and propagation delays, making the UCD27511A-Q1 device suitable for high-speed applications. The device features 4-A peak source and 8-A peak sink currents with asymmetrical drive, boosting immunity against parasitic Miller turnon effect. The split output configuration enables easy and independent adjustment of rise and fall times using only two resistors and eliminating the need for an external diode.

Device Information(1)

UCC27511A-Q1 SOT-23 (6) 2.90 mm × 1.60 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

4 Typical Application Diagrams

Non-Inverting Input


Inverting Input