JAJSQ72B june   2014  – may 2023 TPS65262-1

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. 5 Device Comparison Table
  7. 6 Pin Configuration and Functions
  8. 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
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Adjusting the Output Voltage
      2. 8.3.2  Enable and Adjusting UVLO
      3. 8.3.3  Soft-Start Time
      4. 8.3.4  Power-Up Sequencing
        1. 8.3.4.1 External Power Sequencing
        2. 8.3.4.2 Automatic Power Sequencing
      5. 8.3.5  V7V Low Dropout Regulator and Bootstrap
      6. 8.3.6  Out-of-Phase Operation
      7. 8.3.7  Output Overvoltage Protection (OVP)
      8. 8.3.8  PSM
      9. 8.3.9  Slope Compensation
      10. 8.3.10 Overcurrent Protection (OCP)
        1. 8.3.10.1 High-Side MOSFET OCP
        2. 8.3.10.2 Low-Side MOSFET OCP
      11. 8.3.11 Power Good
      12. 8.3.12 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Operation With VIN < 4.5 V (Minimum VIN)
      2. 8.4.2 Operation With EN Control
      3. 8.4.3 Operation at Light Loads
  10. 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 Output Inductor Selection
        2. 9.2.2.2 Output Capacitor Selection
        3. 9.2.2.3 Input Capacitor Selection
        4. 9.2.2.4 Loop Compensation
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 ドキュメントの更新通知を受け取る方法
    2. 10.2 サポート・リソース
    3. 10.3 Trademarks
    4. 10.4 静電気放電に関する注意事項
    5. 10.5 用語集
  12. 11Mechanical, 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

8.3.4.2 Automatic Power Sequencing

The TPS65262-1 starts with a predefined power-up and power-down sequence when the MODE pin is driven to high. As shown in Table 8-2, the sequence is dictated by different combinations of the EN1 and EN2 status. EN3 is used to start or stop the converters. Buck2 and buck3 are identical converters and can be swapped in the system operation to allow for additional sequencing stages. Figure 8-4 shows the power sequencing when EN1 and EN2 are pulled up high.

Table 8-2 Power Sequencing
MODEEN1EN2EN3Start SequencingShutdown Sequencing
Automatic power sequencingHighHighHighUsed to start or stop bucks in sequenceBuck1→buck2→buck3Buck3→buck2→buck1
HighLowHighBuck2→buck1→buck3Buck3→buck1→buck2
HighHighLowBuck2→buck3→buck1Buck1→buck3→buck2
HighLowLowReservedReservedReserved
Externally controlled sequencingLowUsed to start or stop buck1Used to start or stop buck2Used to start or stop buck3xx
GUID-29265493-40AE-45E8-AD04-264561957CE3-low.svgFigure 8-4 Automatic Power Sequencing