JAJSHM6E june   2019  – february 2021 UCC256402 , UCC256403 , UCC256404

PRODUCTION DATA  

1.   1
2. 1 特長
3. 2 アプリケーション
4. 3 概要
5. 4 Revision History
6.   Device Comparison Table
7. 5 Pin Configuration and Functions
   1.     Pin Functions
8. 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
9. 7 Detailed Description
   1. 7.1 Overview
   2. 7.2 Functional Block Diagram
   3. 7.3 Feature Description
      1. 7.3.1 Hybrid Hysteretic Control
      2. 7.3.2 Regulated 13-V Supply
      3. 7.3.3 Feedback Chain
         1. 7.3.3.1 Optocoupler Feedback Signal Input and Bias
         2. 7.3.3.2 FB Pin Voltage Clamp
         3. 7.3.3.3 "Pick Lower Value" Block and Soft Start Multiplexer
         4. 7.3.3.4 Pick Higher Block and Burst Mode Multiplexer
         5. 7.3.3.5 VCR Comparators
      4. 7.3.4 Resonant Capacitor Voltage Sensing
      5. 7.3.5 Resonant Current Sensing
      6. 7.3.6 Bulk Voltage Sensing
      7. 7.3.7 Output Voltage Sensing
      8. 7.3.8 High Voltage Gate Driver
         1. 7.3.8.1 Adaptive Dead Time Control
      9. 7.3.9 Protections
         1. 7.3.9.1 ZCS Region Prevention
         2. 7.3.9.2 Over Current Protection (OCP)
         3. 7.3.9.3 Bias Winding Over Voltage Protection (BWOVP)
         4. 7.3.9.4 Input Under Voltage Protection (VINUVP)
         5. 7.3.9.5 Input Over Voltage Protection (VINOVP)
         6. 7.3.9.6 Boot UVLO
         7. 7.3.9.7 RVCC UVLO
         8. 7.3.9.8 Over Temperature Protection (OTP)
   4. 7.4 Device Functional Modes
      1. 7.4.1 High Voltage Start-Up
      2. 7.4.2 X-Capacitor Discharge
      3. 7.4.3 Burst Mode Control
         1. 7.4.3.1 Soft-Start and Burst-Mode Threshold
         2. 7.4.3.2 BMTL/BMTH Ratio Programming
      4. 7.4.4 System State Machine
10.   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 LLC Rectifier Diodes
          13. 8.2.2.13 LLC Output Capacitors
          14. 8.2.2.14 HV Pin Series Resistors
          15. 8.2.2.15 BLK Pin Voltage Divider
          16. 8.2.2.16 ISNS Pin Differentiator
          17. 8.2.2.17 VCR Pin Capacitor Divider
          18. 8.2.2.18 BW Pin Voltage Divider
          19. 8.2.2.19 Soft Start and Burst Mode Programming
       3. 8.2.3 Application Curves
11. 8 Power Supply Recommendations
    1. 8.1 VCC Pin Capacitor
    2. 8.2 Boot Capacitor
    3. 8.3 RVCC Pin Capacitor
12. 9 Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
13. 10Device and Documentation Support
    1. 10.1 Documentation Support
       1. 10.1.1 Related Documentation
    2. 10.2 Related Links
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 Community Resources
    5. 10.5 Trademarks
14.   Mechanical, Packaging, and Orderable Information

UCC25640x 超低可聴ノイズ、超低スタンバイ電力の
LLC 共振コントローラ