SLUSES3B October   2023  – July 2024 UCC25660

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Switching Characteristics
    7. 6.7 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Input Power Proportional Control
        1. 7.3.1.1 Voltage Feedforward
      2. 7.3.2 VCR Synthesizer
      3. 7.3.3 Feedback Chain (Control Input)
      4. 7.3.4 Adaptive Dead-Time
      5. 7.3.5 Input Voltage Sensing
        1. 7.3.5.1 Brown in and Brown out Tresholds and Options
        2. 7.3.5.2 Output OVP and External OTP
      6. 7.3.6 Resonant Tank Current Sensing
    4. 7.4 Protections
      1. 7.4.1 Zero Current Switching (ZCS) Protection
      2. 7.4.2 Minimum Current Turn-off During Soft Start
      3. 7.4.3 Cycle by Cycle Current Limit and Short Circuit Protection
      4. 7.4.4 Overload (OLP) Protection
      5. 7.4.5 VCC OVP Protection
    5. 7.5 Device Functional Modes
      1. 7.5.1 Startup
        1. 7.5.1.1 With HV Startup
        2. 7.5.1.2 Without HV Startup
      2. 7.5.2 Soft Start Ramp
        1. 7.5.2.1 Startup Transition to Regulation
      3. 7.5.3 Light Load Management
        1. 7.5.3.1 Operating Modes (Burst Pattern)
        2. 7.5.3.2 Mode Transition Management
        3. 7.5.3.3 Burst Mode Threshold Programming
        4. 7.5.3.4 PFC On/Off
      4. 7.5.4 X-Capacitor Discharge
        1. 7.5.4.1 Detecting Through HV Pin Only
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1  LLC Power Stage Requirements
        2. 8.2.2.2  LLC Gain Range
        3. 8.2.2.3  Select Ln and Qe
        4. 8.2.2.4  Determine Equivalent Load Resistance
        5. 8.2.2.5  Determine Component Parameters for LLC Resonant Circuit
        6. 8.2.2.6  LLC Primary-Side Currents
        7. 8.2.2.7  LLC Secondary-Side Currents
        8. 8.2.2.8  LLC Transformer
        9. 8.2.2.9  LLC Resonant Inductor
        10. 8.2.2.10 LLC Resonant Capacitor
        11. 8.2.2.11 LLC Primary-Side MOSFETs
        12. 8.2.2.12 Design Considerations for Adaptive Dead-Time
        13. 8.2.2.13 LLC Rectifier Diodes
        14. 8.2.2.14 LLC Output Capacitors
        15. 8.2.2.15 HV Pin Series Resistors
        16. 8.2.2.16 BLK Pin Voltage Divider
        17. 8.2.2.17 ISNS Pin Differentiator
        18. 8.2.2.18 TSET Pin
        19. 8.2.2.19 OVP/OTP Pin
        20. 8.2.2.20 Burst Mode Programming
        21. 8.2.2.21 Application Curves
    3. 8.3 Power Supply Recommendations
      1. 8.3.1 VCCP Pin Capacitor
      2. 8.3.2 Boot Capacitor
      3. 8.3.3 V5P Pin Capacitor
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
        1. 8.4.2.1 Schematics
        2. 8.4.2.2 Schematics
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

6.7 Typical Characteristics

UCC25660 IHVHigh vs Temperature
Figure 6-1 IHVHigh vs Temperature
UCC25660 IHVLeak vs Temperature
Figure 6-3 IHVLeak vs Temperature
UCC25660 IBOOT_LEAK vs Temperature
Figure 6-5 IBOOT_LEAK vs Temperature
UCC25660 RFBInternal vs Temperature
Figure 6-7 RFBInternal vs Temperature
UCC25660 V5P (10mA Load)vs Temperature
Figure 6-9 V5P (10mA Load)vs Temperature
UCC25660 ICCRun vs Temperature
Figure 6-11 ICCRun vs Temperature
UCC25660 IHVZCD vs Temperature
Figure 6-13 IHVZCD vs Temperature
UCC25660 VHB-HSUVLOFall vs Temperature
Figure 6-15 VHB-HSUVLOFall vs Temperature
UCC25660 (VCC- VLOH) vs Temperature
Figure 6-17 (VCC- VLOH) vs Temperature
UCC25660 (VHOL- VHS) vs Temperature
Figure 6-19 (VHOL- VHS) vs Temperature
UCC25660 VCCStartSelf vs Temperature
Figure 6-21 VCCStartSelf vs Temperature
UCC25660 VCCStartExt vs Temperature
Figure 6-23 VCCStartExt vs Temperature
UCC25660 ILLPrgm vs Temperature
Figure 6-25 ILLPrgm vs Temperature
UCC25660 IHVLow vs Temperature
Figure 6-2 IHVLow vs Temperature
UCC25660 IBOOT_QUIESCENT vs Temperature
Figure 6-4 IBOOT_QUIESCENT vs Temperature
UCC25660 tChargeBoot vs Temperature
Figure 6-6 tChargeBoot vs Temperature
UCC25660 V5P (no load) vs Temperature
Figure 6-8 V5P (no load) vs Temperature
UCC25660 ICCSleep vs Temperature
Figure 6-10 ICCSleep vs Temperature
UCC25660 IXCAPDischarge vs Temperature
Figure 6-12 IXCAPDischarge vs Temperature
UCC25660 IHVZCD vs Temperature
Figure 6-14 IHVZCD vs Temperature
UCC25660 IHB-HSUVLOHys vs Temperature
Figure 6-16 IHB-HSUVLOHys vs Temperature
UCC25660 VLOL vs Temperature
Figure 6-18 VLOL vs Temperature
UCC25660 (VHB - VHOH) vs Temperature
Figure 6-20 (VHB - VHOH) vs Temperature
UCC25660 VCCReStartJfet vs Temperature
Figure 6-22 VCCReStartJfet vs Temperature
UCC25660 VCCStopSwitching vs Temperature
Figure 6-24 VCCStopSwitching vs Temperature