JAJSN58 April   2022 TLVM13620

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 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 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  System Characteristics
    7. 7.7  Typical Characteristics
    8. 7.8  Typical Characteristics — 2-A Device (VIN = 12 V)
    9. 7.9  Typical Characteristics — 2-A Device (VIN = 24 V)
    10. 7.10 Typical Characteristics — 2-A Device (VIN = 36 V)
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Input Voltage Range
      2. 8.3.2  Adjustable Output Voltage (FB)
      3. 8.3.3  Input Capacitors
      4. 8.3.4  Output Capacitors
      5. 8.3.5  Switching Frequency (RT)
      6. 8.3.6  Output ON and OFF Enable (EN) and VIN UVLO
      7. 8.3.7  Power-Good Monitor (PG)
      8. 8.3.8  Internal LDO, VCC Output, and VLDOIN Input
      9. 8.3.9  Overcurrent Protection (OCP)
      10. 8.3.10 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Shutdown Mode
      2. 8.4.2 Standby Mode
      3. 8.4.3 Active Mode
  9. 9 Applications and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Design 1 — 2-A Synchronous Buck Regulator for Industrial Applications
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Custom Design With WEBENCH® Tools
          2. 9.2.1.2.2 Output Voltage Setpoint
          3. 9.2.1.2.3 Switching Frequency Selection
          4. 9.2.1.2.4 Input Capacitor Selection
          5. 9.2.1.2.5 Output Capacitor Selection
          6. 9.2.1.2.6 Other Connections
        3. 9.2.1.3 Application Curves
      2. 9.2.2 Design 2 — Inverting Buck-Boost Regulator with a –5-V Output
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
          1. 9.2.2.2.1 Output Voltage Setpoint
          2. 9.2.2.2.2 IBB Maximum Output Current
          3. 9.2.2.2.3 Switching Frequency Selection
          4. 9.2.2.2.4 Input Capacitor Selection
          5. 9.2.2.2.5 Output Capacitor Selection
          6. 9.2.2.2.6 Other Connections
          7. 9.2.2.2.7 EMI
            1. 9.2.2.2.7.1 EMI Plots
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
      1. 11.2.1 Package Specifications
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
      2. 12.1.2 Development Support
        1. 12.1.2.1 Custom Design With WEBENCH® Tools
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 サポート・リソース
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, 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

8.3.7 Power-Good Monitor (PG)

The TLVM13620 provides a PGOOD signal to indicate when the output voltage is within regulation. Use the PGOOD signal for output monitoring, fault protection, or start-up sequencing of downstream converters. The PGOOD pin voltage goes low when the feedback voltage is outside of the PGOOD thresholds, which occurs during the following:

  • While the device is disabled
  • In current limit
  • In thermal shutdown
  • During normal start-up, when the output voltage has not reach its regulation value

A glitch filter prevents false flag operation for short excursions (< 120 µs typical) of the output voltage, such as during line and load transients.

PGOOD is an open-drain output that requires a pullup resistor to a DC supply not greater than 20 V. The typical range of pullup resistance is 10 kΩ to 100 kΩ. When EN is pulled low, the flag output is also forced low. With EN low, power good remains valid as long as the input voltage is above 1 V (typical). Use the PG signal for start-up sequencing of downstream regulators, as shown in Figure 8-4, or for fault protection and output monitoring.

Figure 8-4 TLVM13620 Sequencing Implementation Using PG and EN