SLVSLB8 May   2026 TLVM65030

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Descriptions
      1. 6.3.1 Output Voltage Selection
      2. 6.3.2 EN Pin and Use as VIN UVLO
      3. 6.3.3 Mode Selection
        1. 6.3.3.1 MODE/SYNC Pin Uses for Synchronization
        2. 6.3.3.2 Clock Locking
      4. 6.3.4 Adjustable Switching Frequency
      5. 6.3.5 Internal LDO, VCC UVLO, and BIAS Input
      6. 6.3.6 Bootstrap Voltage (BST Pin)
      7. 6.3.7 Soft Start and Recovery From Dropout
      8. 6.3.8 Monitoring Features
        1. 6.3.8.1 Power-Good Monitor
        2. 6.3.8.2 Overcurrent and Short-Circuit Protection
        3. 6.3.8.3 Hiccup
        4. 6.3.8.4 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Shutdown Mode
      2. 6.4.2 Active Mode
        1. 6.4.2.1 Peak Current Mode Operation
        2. 6.4.2.2 Auto Mode Operation
          1. 6.4.2.2.1 Diode Emulation
        3. 6.4.2.3 FPWM Mode Operation
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Custom Design With WEBENCH® Tools
        2. 7.2.2.2 Choosing the Switching Frequency
        3. 7.2.2.3 FB for Adjustable or Fixed Output Voltage Mode
        4. 7.2.2.4 Output Capacitor Selection
        5. 7.2.2.5 Input Capacitor Selection
        6. 7.2.2.6 CBOOT
        7. 7.2.2.7 External UVLO
        8. 7.2.2.8 Maximum Ambient Temperature
      3. 7.2.3 Application Curves
    3. 7.3 Best Design Practices
    4. 7.4 Power Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
        1. 7.5.1.1 Ground and Thermal Considerations
      2. 7.5.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Third-Party Products Disclaimer
      2. 8.1.2 Development Support
        1. 8.1.2.1 Custom Design With WEBENCH® Tools
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information
6.4.2.2.1 Diode Emulation

Diode emulation prevents reverse current though the inductor, which requires a lower frequency needed to regulate given a fixed peak inductor current. Diode emulation also limits ripple current as frequency is reduced. Frequency is reduced when peak inductor current goes below IPEAK-MIN. With a fixed peak current, as output current is reduced to zero, frequency must be reduced to near zero to maintain regulation.

TLVM65030 PFM Operation
In auto mode, the low-side device is turned off after inductor current is near zero. As a result, after output current is less than half of inductor ripple in CCM, the part operates in DCM. This action is equivalent to saying that diode emulation is active.
Figure 6-10 PFM Operation

The TLVM65030 has a minimum peak inductor current setting in auto mode. That being said, when current is reduced to a low value with fixed input voltage, on-time is constant. Regulation is then achieved by adjusting frequency. This mode of operation is called PFM mode regulation.