SLUSAD7B April   2011  – July 2016 UCC25710

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (continued)
  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 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 Multi-transformer Architecture
      2. 8.3.2 Start-Up and Non-Dimming Operation
      3. 8.3.3 Dimming Operation
      4. 8.3.4 Fault Condition Operation
    4. 8.4 Device Functional Modes
  9. 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. 9.2.2.1  Determining Transformer and Resonant Circuit Parameters
        2. 9.2.2.2  CS (Output Current Sense)
        3. 9.2.2.3  ICOMP (Current Amplifier Compensation)
        4. 9.2.2.4  SS (Soft Start)
        5. 9.2.2.5  FMAX (Maximum VCO Frequency)
        6. 9.2.2.6  FMIN (Minimum VCO Frequency)
        7. 9.2.2.7  GD1 and GD2 (Gate Drive 1 and 2)
        8. 9.2.2.8  LEDSW (LED Switch Drive)
        9. 9.2.2.9  DSR (Dimming Slew Rate)
        10. 9.2.2.10 DTY (Dimming Duty-Cycle Average)
        11. 9.2.2.11 DADJ (Dimming Duty-Cycle Adjust)
        12. 9.2.2.12 OV (Output Overvoltage)
        13. 9.2.2.13 UV (Output Undervoltage)
        14. 9.2.2.14 CL (Current Limit)
      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 Receiving Notification of Documentation Updates
    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

10 Power Supply Recommendations

The UCC25710 is designed to operate from an external bias supply connected to the VCC input. It has an operating voltage range between 11 V and 18 V with an absolute maximum input voltage rating of 18 V.

In most applications, the high voltage input range of the LLC controller is normally set at about 370 V to 410 V with 390-V nominal. This narrow range of DC input voltage is a constraint of the LLC topology. Setting the maximum and minimum switching frequencies limits the regulation range to these input voltages.