SLVSG95 September   2021 TPSM5601R5

PRODUCTION DATA  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and 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 (VIN = 12 V)
    7. 7.7 Typical Characteristics (VIN = 24 V)
    8. 7.8 Typical Characteristics (VIN = 48 V)
    9. 7.9 Typical Characteristics (VIN = 60 V)
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Adjustable Output Voltage (FB)
      2. 8.3.2 Minimum Input Capacitance
      3. 8.3.3 Minimum Output Capacitance
      4. 8.3.4 Precision Enable (EN), Undervoltage Lockout (UVLO), and Hysteresis (HYS)
      5. 8.3.5 Power Good (PGOOD)
      6. 8.3.6 Spread Spectrum Operation
      7. 8.3.7 Overcurrent Protection (OCP)
      8. 8.3.8 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Active Mode
      2. 8.4.2 Standby Mode
      3. 8.4.3 Shutdown Mode
  9. Applications 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 Custom Design With WEBENCH® Tools
        2. 9.2.2.2 Output Voltage Setpoint
        3. 9.2.2.3 Input Capacitors
        4. 9.2.2.4 Output Capacitor Selection
        5. 9.2.2.5 Power Good Signal
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
      1. 11.2.1 Theta JA Versus PCB Area
      2. 11.2.2 Package Specifications
      3. 11.2.3 EMI
        1. 11.2.3.1 EMI Plots
  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 Support Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

Spread Spectrum Operation

Spread spectrum is a factory option in the TPSM5601R5S variant. The purpose of the spread spectrum is to eliminate peak emissions at specific frequencies by spreading emissions across a wider range of frequencies than a part with fixed frequency operation. In most systems, low frequency conducted emissions from the first few harmonics of the switching frequency can be easily filtered. A more difficult design criterion is reduction of emissions at higher harmonics which fall in the FM band. These harmonics often couple to the environment through electric fields around the switch node. The TPSM5601R5S device with triangular spread spectrum uses a ±4% spreading rate (typical) with the modulation rate set at 16 kHz (typical). The spread spectrum is only available while the internal clock is free running at its natural frequency. Any of the following conditions override spread spectrum, turning it off:

  • At high input voltages/low output voltage ratio when the device operates at minimum on time the internal clock is slowed disabling spread spectrum.
  • The clock is slowed during dropout.