JAJS381E September   2009  – September 2018 TPS54218

PRODUCTION DATA.  

  1. 特長
  2. アプリケーション
  3. 概要
    1.     Device Images
      1.      概略回路図
      2.      効率と出力電流との関係
  4. 改訂履歴
  5. 概要(続き)
  6. Pin Configuration and Functions
    1.     Pin Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Fixed Frequency PWM Control
      2. 8.3.2  Slope Compensation and Output Current
      3. 8.3.3  Bootstrap Voltage (Boot) and Low Dropout Operation
      4. 8.3.4  Error Amplifier
      5. 8.3.5  Voltage Reference
      6. 8.3.6  Adjusting the Output Voltage
      7. 8.3.7  Enable and Adjusting Undervoltage Lockout
      8. 8.3.8  Soft-Start Pin
      9. 8.3.9  Sequencing
      10. 8.3.10 Constant Switching Frequency and Timing Resistor (RT/CLK Pin)
      11. 8.3.11 Overcurrent Protection
      12. 8.3.12 Frequency Shift
      13. 8.3.13 Reverse Overcurrent Protection
      14. 8.3.14 Synchronize Using the RT/CLK Pin
      15. 8.3.15 Power Good (PWRGD Pin)
      16. 8.3.16 Overvoltage Transient Protection
      17. 8.3.17 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Small Signal Model for Loop Response
      2. 8.4.2 Simple Small Signal Model for Peak Current Mode Control
      3. 8.4.3 Small Signal Model for Frequency Compensation
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1  Step One: Select the Switching Frequency
        2. 9.2.2.2  Step Two: Select the Output Inductor
        3. 9.2.2.3  Step Three: Choose the Output Capacitor
        4. 9.2.2.4  Step Four: Select the Input Capacitor
        5. 9.2.2.5  Step Five: Minimum Load DC COMP Voltage
        6. 9.2.2.6  Step Six: Choose the Soft-Start Capacitor
        7. 9.2.2.7  Step Seven: Select the Bootstrap Capacitor
        8. 9.2.2.8  Step Eight: Undervoltage Lockout Threshold
        9. 9.2.2.9  Step Nine: Select Output Voltage and Feedback Resistors
          1. 9.2.2.9.1 Output Voltage Limitations
        10. 9.2.2.10 Step 10: Select Loop Compensation Components
        11. 9.2.2.11 Power Dissipation Estimate
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12デバイスおよびドキュメントのサポート
    1. 12.1 デバイス・サポート
      1. 12.1.1 WEBENCH®ツールによるカスタム設計
      2. 12.1.2 開発サポート
    2. 12.2 商標
    3. 12.3 静電気放電に関する注意事項
    4. 12.4 Glossary
  13. 13メカニカル、パッケージ、および注文情報

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

Typical Characteristics

TPS54218 hilo_rdson_lvs946.gifFigure 1. High-Side and Low-Side On-Resistance vs Junction Temperature
TPS54218 sw_cur_tj_lvs974.gifFigure 3. High-Side Current Limit vs Junction Temperature
TPS54218 fs_rt_lvs974.gifFigure 5. Switching Frequency vs RT Resistance Low Frequency Range
TPS54218 fs_vsense.gifFigure 7. Switching Frequency vs Vsense
TPS54218 ea2_tj_lvs946.gifFigure 9. Transconductance (Soft-Start) vs Junction Temperature
TPS54218 pin_cur_tj_lvs974.gifFigure 11. Pin Current vs Junction Temperature
TPS54218 tps54218SScurrent.gifFigure 13. SS Charge Current vs Junction Temperature
TPS54218 vin_tj_lvs946.gifFigure 15. Input Voltage vs Junction Temperature
TPS54218 shutdwn_vi_lvs946.gifFigure 17. Shutdown Supply Current vs Input Voltage
TPS54218 icc_vi_lvs946.gifFigure 19. Supply Current vs Input Voltage
TPS54218 radson_tj_lvs946.gifFigure 21. PWRGD On Resistance vs Junction Temperature
TPS54218 freq_temp_lvs946.gifFigure 2. Switching Frequency vs Junction Temperature
TPS54218 vrefA_tj_lvs974.gifFigure 4. Voltage Reference vs Junction Temperature
TPS54218 fs2_rt_lvs974.gifFigure 6. Switching Frequency vs RT Resistance High Frequency Range
TPS54218 ea_tj_lvs946.gifFigure 8. Transconductance vs Junction Temperature
TPS54218 en_tj_lvs946.gifFigure 10. Enable Pin Voltage vs Junction Temperature
TPS54218 pin2_cur_tj_lvs974.gifFigure 12. Pin Current vs Junction Temperature
TPS54218 ss2_tj_lvs946.gifFigure 14. Discharge Current vs Junction Temperature
TPS54218 shutdwn_tj_lvs946.gifFigure 16. Shutdown Supply Current vs Junction Temperature
TPS54218 icc_tj_lvs946.gifFigure 18. Supply Current vs Junction Temperature
TPS54218 pwrgd_tj_lvs946.gifFigure 20. PWRGD Threshold vs Junction Temperature
TPS54218 comp_v_temp_slvs946.gifFigure 22. Minimum Comp Voltage Clamp vs Junction Temperature