SLUUDA3 May   2025 UCC25661

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specifications
    4. 1.4 Device Information
    5.     General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
  7. 2Hardware
    1. 2.1 Test Setup
      1. 2.1.1 Test Equipment
      2. 2.1.2 Recommended Test Setup
    2. 2.2 Using the EVM with UCC256612
    3. 2.3 Using the EVM with UCC256613
    4. 2.4 Test Points
    5. 2.5 Terminals
    6. 2.6 Test Procedure
      1. 2.6.1 Equipment Shutdown
  8. 3Implementation Results
    1. 3.1 Performance Data and Typical Characteristic Curves
      1. 3.1.1  UCC25661EVM-128 Standalone Standby and Light Load Power
      2. 3.1.2  Efficiency, Load Regulation, Switching Frequency vs Output Current
      3. 3.1.3  Startup
      4. 3.1.4  Enhanced ZCS Avoidance During Soft Start
      5. 3.1.5  Thermal Image
      6. 3.1.6  Output Voltage Ripple
      7. 3.1.7  Load Transient Response
      8. 3.1.8  Loop Response
      9. 3.1.9  Steady State
      10. 3.1.10 X-Capacitor Discharge
  9. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials
  10. 5Additional Information
    1.     Trademarks

Features

  • IPPC controlled (Input power proportional control) LLC resonant half-bridge DC-DC power conversion
  • DC line input from 365VDC to 410VDC
  • AC input voltage from 85VDC to 265VAC
  • Regulated 12VDC typical output
  • Full-load power of 180W, or full-load current of 15A
  • High efficiency
  • Enhanced light load management:
    • High frequency pulse skip for improved light load efficiency
    • Low frequency burst for reduced standby power
    • Audible frequency range skip for reduced audible noise
    • User option to disable
    • Integrated PFC on/off control signal
    • LF burst soft on/soft off for reduced audible noise
  • Combined resonant current and resonant capacitor voltage sensing through one pin
  • Adaptive dead-time
  • X-capacitor discharge
  • Automatic capacitive region avoidance
  • Adaptive soft start with minimized inrush current
  • Complete sets of protections:
    • Cycle-by-cycle current limit, OCP1 protection
    • Configurable over power protection
    • OVP, internal and external OTP
    • Vin and VCC UVLO
    • Inbuilt 19.5V VCC clamp
  • Test points to facilitate device and topology evaluation