SLVSCS1B March   2015  – May 2015 UCD7138

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Simplified Schematic
  5. 5 Revision History
  6. 6 Pin Configuration and 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 Electrical Characteristics
    6. 7.6 Switching Characteristics
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Body-Diode Conduction Detection
      2. 8.3.2 Gate Turnon and Turnoff
      3. 8.3.3 VCC and Undervoltage Lockout
      4. 8.3.4 Operating Supply Current
      5. 8.3.5 Driver Stage
    4. 8.4 Device Functional Modes
      1. 8.4.1 UVLO Mode
      2. 8.4.2 Normal Operation Mode
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Half-Bridge LLC
        1. 9.2.1.1 Design Requirements
          1. 9.2.1.1.1 Gate Input
          2. 9.2.1.1.2 Gate Output
          3. 9.2.1.1.3 Drain-to-Source Voltage Sensing
          4. 9.2.1.1.4 DTC Output
          5. 9.2.1.1.5 Turn-on Edge Optimization
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Design Without SR-Control Optimization
          2. 9.2.1.2.2 Setting the DTC Detection Window
          3. 9.2.1.2.3 Setting the Clamps
          4. 9.2.1.2.4 Setting the DTC Optimization Target and Hysteresis
          5. 9.2.1.2.5 Setting the DTC Negative Current Fault Protection
        3. 9.2.1.3 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 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Community Resource
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

12 Device and Documentation Support

12.1 Documentation Support

12.1.1 Related Documentation

For related documentation, see the following:

  • UCD3138A Highly Integrated Digital Controller for Isolated Power, SLUSC66
  • Using UCD7138 and UCD3138A for Advanced Synchronous Rectification Control, SLUA737
  • UCD3138 Digital Power Peripherals Programmer’s Manual , SLUU995
  • UCD3138A Migration Guide, SLUA741

12.2 Community Resource

The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use.

    TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers.
    Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support.

12.3 Trademarks

E2E is a trademark of Texas Instruments.

All other trademarks are the property of their respective owners.

12.4 Electrostatic Discharge Caution

esds-image

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

12.5 Glossary

SLYZ022 — TI Glossary.

This glossary lists and explains terms, acronyms, and definitions.