JAJSKS4A August   2021  – December 2021 TPS92519-Q1

PRODUCTION DATA  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Buck Converter Switching Operation
      2. 7.3.2  Switching Frequency and Adaptive On-Time Control
      3. 7.3.3  Minimum On-Time, Off-Time, and Inductor Ripple
      4. 7.3.4  Enable
      5. 7.3.5  LED Current Regulation and Error Amplifier
      6. 7.3.6  Start-up Sequence
      7. 7.3.7  Analog Dimming and Forced Continuous Conduction Mode
      8. 7.3.8  External PWM Dimming and Input Undervoltage Lockout (UVLO)
      9. 7.3.9  Shunt FET Dimming or Matrix Beam Application
      10. 7.3.10 Bias Supply
      11. 7.3.11 Bootstrap Supply
      12. 7.3.12 Faults and Diagnostics
      13. 7.3.13 Output Short Circuit Fault
      14. 7.3.14 Output Open Circuit Fault
      15. 7.3.15 Parallel Operation
    4. 7.4 Device Functional Modes
      1. 7.4.1 Power On Reset (POR)
      2. 7.4.2 Run Mode
      3. 7.4.3 Sleep Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1  Duty Cycle Consideration
      2. 8.1.2  Switching Frequency Selection
      3. 8.1.3  LED Current Set Point
      4. 8.1.4  Inductor Selection
      5. 8.1.5  Output Capacitor Selection
      6. 8.1.6  Input Capacitor Selection
      7. 8.1.7  Bootstrap Capacitor Selection
      8. 8.1.8  Compensation Capacitor Selection
      9. 8.1.9  Input Undervoltage Protection
      10. 8.1.10 CSN Protection Diode
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Calculating Duty Cycle
        2. 8.2.2.2 Calculating Minimum On-Time and Off-Time
        3. 8.2.2.3 Minimum Switching Frequency
        4. 8.2.2.4 LED Current Set Point
        5. 8.2.2.5 Inductor Selection
        6. 8.2.2.6 Output Capacitor Selection
        7. 8.2.2.7 Bootstrap Capacitor Selection
        8. 8.2.2.8 Compensation Capacitor Selection
        9. 8.2.2.9 PWM Dimming and Input Voltage Protection
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Compact Layout for EMI Reduction
        1. 10.1.1.1 Ground Plane
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 サポート・リソース
    4. 11.4 Trademarks
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

8.2.3 Application Curves

GUID-600C4541-70F3-4122-A1B9-2B9D12DCA78C-low.gif
Ch1: SW voltage (10 V/div); Ch3: Inductor current (200 mA/div); Ch4: COMP voltage (400 mV/div); Time: 50 µs/div
Figure 8-5 Start-up Transient
GUID-1EC1B6CE-F002-459C-B70E-0489DF643F35-low.gif
Ch1: SW voltage (10 V/div); Ch2: Output voltage (4 V/div); Ch3: Inductor current (200 mA/div); Ch4: LED current (200 mA/div); Time: 500 µs/div
Figure 8-7 PWM Dimming Transient
GUID-F44681F9-C6FF-432A-81DA-87738FBBFC80-low.gif
Ch1: SW voltage (10 V/div); Ch2: Output voltage (4 V/div); Ch3: Inductor current (200 mA/div); Ch4: LED current (200 mA/div); Time: 5 µs/div
Figure 8-9 PWM Dimming (Falling Edge)
GUID-4E6971A2-D73F-451B-B6DE-D95C746D86AF-low.gif
Ch1: SW voltage (10 V/div); Ch2: Output voltage (4 V/div); Ch4: LED current (200 mA/div); Time: 400 µs/div
Figure 8-11 Shunt Dimming (LEDs ON-OFF Transient)
GUID-A25BA7D0-1135-464E-BAA9-5EBD0C3BDB19-low.gif
Ch1: SW voltage (10 V/div); Ch2: Output voltage (4 V/div); Ch4: LED current (200 mA/div); Time: 50 µs/div
Figure 8-13 Shunt Dimming (LEDs ON to LEDs OFF)
GUID-C669D1A3-F25E-4F9A-B302-F1960F81FB7C-low.gif
Ch1: SW voltage (10 V/div); Ch2: Output voltage (4 V/div); Ch3: Inductor current (200 mA/div); Ch4: LED current (200 mA/div); Time: 40 µs/div
Figure 8-15 Output Short Circuit Fault Recovery
GUID-41671A4B-F909-423D-9171-237F174F8596-low.gif
Ch1: SW voltage (10 V/div); Ch2: Output voltage (4 V/div); Ch3: Inductor current (200 mA/div); Time: 1 µs/div
Figure 8-6 Normal Operation
GUID-71B8FDA5-977C-498D-AA80-818DBC4C9DB4-low.gif
Ch1: SW voltage (10 V/div); Ch2: Output voltage (4 V/div); Ch3: Inductor current (200 mA/div); Ch4: LED current (200 mA/div); Time: 5 µs/div
Figure 8-8 PWM Dimming (Rising Edge)
GUID-5D71B175-023A-4788-AC75-A6068E9FB384-low.gif
Ch1: SW voltage (10 V/div); Ch2: Output voltage (4 V/div); Ch4: LED current (200 mA/div); Time: 400 µs/div
Figure 8-10 Shunt Dimming With Matrix Manager
GUID-38BDAA6C-9E19-4B84-A0B6-481060AD1FDC-low.gif
Ch1: SW voltage (10 V/div); Ch2: Output voltage (4 V/div); Ch4: LED current (200 mA/div); Time: 50 µs/div
Figure 8-12 Shunt Dimming (LEDs OFF to LEDs ON)
GUID-CD103D51-957F-4E23-95D4-BF11A48DBA39-low.gif
Ch1: SW voltage (10 V/div); Ch2: Output voltage (4 V/div); Ch3: Inductor current (200 mA/div); Ch4: LED current (200 mA/div); Time: 50 µs/div
Figure 8-14 Output Short Circuit Fault
GUID-CBCCC6FE-A57E-4AD4-BD3E-6FEB0B4CF65C-low.gif
Ch1: SW voltage (10 V/div); Ch2: Output voltage (4 V/div); Ch3: Inductor current (400 mA/div); Ch4: LED current (200 mA/div); Time: 40 µs/div
Figure 8-16 Output Open Circuit Fault