JAJSHM6A June   2019  – August 2019 UCC256403 , UCC256404

ADVANCE INFORMATION for pre-production products; subject to change without notice.  

1. 1 特長
2. 2 アプリケーション
3. 3 概要
   1.     概略回路図
4. 4 改訂履歴
5. 5 概要 (続き)
6. 6 Device Comparison Table
7. 7 Pin Configuration and Functions
   1.     Pin Functions
8. 8 Specifications
   1. 8.1 Absolute Maximum Ratings
   2. 8.2 ESD Ratings
   3. 8.3 Recommended Operating Conditions
   4. 8.4 Thermal Information
   5. 8.5 Electrical Characteristics
   6. 8.6 Switching Characteristics
9. 9 Detailed Description
   1. 9.1 Overview
   2. 9.2 Functional Block Diagram
   3. 9.3 Feature Description
      1. 9.3.1 Hybrid Hysteretic Control
      2. 9.3.2 Regulated 13-V Supply
      3. 9.3.3 Feedback Chain
         1. 9.3.3.1 Optocoupler Feedback Signal Input and Bias
         2. 9.3.3.2 FB Pin Voltage Clamp
         3. 9.3.3.3 "Pick Lower Value" Block and Soft Start Multiplexer
         4. 9.3.3.4 Pick Higher Block and Burst Mode Multiplexer
         5. 9.3.3.5 VCR Comparators
      4. 9.3.4 Resonant Capacitor Voltage Sensing
      5. 9.3.5 Resonant Current Sensing
      6. 9.3.6 Bulk Voltage Sensing
      7. 9.3.7 Output Voltage Sensing
      8. 9.3.8 High Voltage Gate Driver
         1. 9.3.8.1 Adaptive Dead Time Control
      9. 9.3.9 Protections
         1. 9.3.9.1 ZCS Region Prevention
         2. 9.3.9.2 Over Current Protection (OCP)
         3. 9.3.9.3 Bias Winding Over Voltage Protection (BWOVP)
         4. 9.3.9.4 Input Under Voltage Protection (VINUVP)
         5. 9.3.9.5 Boot UVLO
         6. 9.3.9.6 RVCC UVLO
         7. 9.3.9.7 Over Temperature Protection (OTP)
   4. 9.4 Device Functional Modes
      1. 9.4.1 High Voltage Start-Up
      2. 9.4.2 X-Capacitor Discharge
      3. 9.4.3 Burst Mode Control
         1. 9.4.3.1 Soft-Start and Burst-Mode Threshold
         2. 9.4.3.2 BMTL/BMTH Ratio Programming
      4. 9.4.4 System State Machine
10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
       1. 10.2.1 Design Requirements
       2. 10.2.2 Detailed Design Procedure
          1. 10.2.2.1  LLC Power Stage Requirements
          2. 10.2.2.2  LLC Gain Range
          3. 10.2.2.3  Select Ln and Qe
          4. 10.2.2.4  Determine Equivalent Load Resistance
          5. 10.2.2.5  Determine Component Parameters for LLC Resonant Circuit
          6. 10.2.2.6  LLC Primary-Side Currents
          7. 10.2.2.7  LLC Secondary-Side Currents
          8. 10.2.2.8  LLC Transformer
          9. 10.2.2.9  LLC Resonant Inductor
          10. 10.2.2.10 LLC Resonant Capacitor
          11. 10.2.2.11 LLC Primary-Side MOSFETs
          12. 10.2.2.12 LLC Rectifier Diodes
          13. 10.2.2.13 LLC Output Capacitors
          14. 10.2.2.14 HV Pin Series Resistors
          15. 10.2.2.15 BLK Pin Voltage Divider
          16. 10.2.2.16 ISNS Pin Differentiator
          17. 10.2.2.17 VCR Pin Capacitor Divider
          18. 10.2.2.18 Soft Start and Burst Mode Programming
          19. 10.2.2.19 BW Pin Voltage Divider
       3. 10.2.3 Application Curves
11. 11Power Supply Recommendations
    1. 11.1 VCC Pin Capacitor
    2. 11.2 Boot Capacitor
    3. 11.3 RVCC Pin Capacitor
12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
13. 13デバイスおよびドキュメントのサポート
    1. 13.1 ドキュメントのサポート
       1. 13.1.1 関連資料
    2. 13.2 関連リンク
    3. 13.3 ドキュメントの更新通知を受け取る方法
    4. 13.4 コミュニティ・リソース
    5. 13.5 商標
    6. 13.6 静電気放電に関する注意事項
    7. 13.7 Glossary
14. 14メカニカル、パッケージ、および注文情報