SLUSDE1D November   2018  – February 2021 UCC21540 , UCC21540A , UCC21541 , UCC21542

PRODMIX  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     UCC21540, UCC21541 Pin Functions
    2.     UCC21542 Pin Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Power Ratings
    6. 7.6  Insulation Specifications
    7. 7.7  Safety-Related Certifications
    8. 7.8  Safety-Limiting Values
    9. 7.9  Electrical Characteristics
    10. 7.10 Switching Characteristics
    11. 7.11 Insulation Characteristics Curves
    12. 7.12 Typical Characteristics
  8. 8 Parameter Measurement Information
    1. 8.1 Minimum Pulses
    2. 8.2 Propagation Delay and Pulse Width Distortion
    3. 8.3 Rising and Falling Time
    4. 8.4 Input and Disable Response Time
    5. 8.5 Programmable Dead Time
    6. 8.6 Power-up UVLO Delay to OUTPUT
    7. 8.7 CMTI Testing
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 VDD, VCCI, and Under Voltage Lock Out (UVLO)
      2. 9.3.2 Input and Output Logic Table
      3. 9.3.3 Input Stage
      4. 9.3.4 Output Stage
      5. 9.3.5 Diode Structure in the UCC2154x
    4. 9.4 Device Functional Modes
      1. 9.4.1 Disable Pin
      2. 9.4.2 Programmable Dead Time (DT) Pin
        1. 9.4.2.1 DT Pin Tied to VCCI
        2. 9.4.2.2 Connecting a Programming Resistor between DT and GND Pins
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Designing INA/INB Input Filter
        2. 10.2.2.2 Select Dead Time Resistor and Capacitor
        3. 10.2.2.3 Select External Bootstrap Diode and its Series Resistor
        4. 10.2.2.4 Gate Driver Output Resistor
        5. 10.2.2.5 Gate to Source Resistor Selection
        6. 10.2.2.6 Estimating Gate Driver Power Loss
        7. 10.2.2.7 Estimating Junction Temperature
        8. 10.2.2.8 Selecting VCCI, VDDA/B Capacitor
          1. 10.2.2.8.1 Selecting a VCCI Capacitor
          2. 10.2.2.8.2 Selecting a VDDA (Bootstrap) Capacitor
          3. 10.2.2.8.3 Select a VDDB Capacitor
        9. 10.2.2.9 Application Circuits with Output Stage Negative Bias
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
      1. 12.1.1 Component Placement Considerations
      2. 12.1.2 Grounding Considerations
      3. 12.1.3 High-Voltage Considerations
      4. 12.1.4 Thermal Considerations
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Documentation Support
      1. 13.1.1 Related Documentation
    2. 13.2 Receiving Notification of Documentation Updates
    3. 13.3 Support Resources
    4. 13.4 Trademarks
    5. 13.5 Electrostatic Discharge Caution
    6. 13.6 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DWK|14
  • DW|16
Thermal pad, mechanical data (Package|Pins)
Orderable Information

9.1 Overview

In order to switch power transistors rapidly and reduce switching power losses, high-current gate drivers are often placed between the output of control devices and the gates of power transistors. There are several instances where controllers are not capable of delivering sufficient current to drive the gates of power transistors. This is especially the case with digital controllers, since the input signal from the digital controller is often a 3.3-V logic signal capable of only delivering a few mA.

The UCC2154x is a flexible dual gate driver which can be configured to fit a variety of power supply and motor drive topologies, as well as drive several types of transistors. The UCC2154x has many features that allow it to integrate well with control circuitry and protect the gates it drives such as: resistor-programmable dead time (DT) control, disable pin, and under voltage lock out (UVLO) for both input and output supplies. The UCC2154x also holds its outputs low when the inputs are left open or when the input pulse duration is too short. The driver inputs are CMOS and TTL compatible for interfacing with digital and analog power controllers alike. Each channel is controlled by its respective input pins (INA and INB), allowing full and independent control of each of the outputs.