SLVSG72 September   2021 TPSM560R6H

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics (VIN = 12 V)
    7. 6.7 Typical Characteristics (VIN = 24 V)
    8. 6.8 Typical Characteristics (VIN = 48 V)
    9. 6.9 Typical Characteristics (VIN = 60 V)
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Adjustable Output Voltage (FB)
      2. 7.3.2 Minimum Input Capacitance
      3. 7.3.3 Minimum Output Capacitance
      4. 7.3.4 Precision Enable (EN), Undervoltage Lockout (UVLO), and Hysteresis (HYS)
      5. 7.3.5 Power Good (PGOOD)
      6. 7.3.6 Overcurrent Protection (OCP)
      7. 7.3.7 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Active Mode
      2. 7.4.2 Standby Mode
      3. 7.4.3 Shutdown Mode
  8. 8 Applications and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Custom Design With WEBENCH® Tools
        2. 8.2.2.2 Output Voltage Setpoint
        3. 8.2.2.3 Input Capacitor Selection
        4. 8.2.2.4 Output Capacitor Selection
        5. 8.2.2.5 Power-Good Signal
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
      1. 10.2.1 Theta JA Versus PCB Area
      2. 10.2.2 Package Specifications
      3. 10.2.3 EMI
        1. 10.2.3.1 EMI Plots
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
      2. 11.1.2 Development Support
        1. 11.1.2.1 Custom Design With WEBENCH® Tools
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Support Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

7.3.4 Precision Enable (EN), Undervoltage Lockout (UVLO), and Hysteresis (HYS)

The EN pin provides precision ON and OFF control for the TPSM560R6H. Once the EN pin voltage exceeds the threshold voltage, the device starts operation. The simplest way to enable the device is to connect EN directly to VIN. This lets the device start up when VIN is within its valid operating range. An external logic signal can also be used to drive the EN input to toggle the output on and off and for system sequencing or protection. This input must not be allowed to float.

The TPSM560R6H implements internal undervoltage lockout (UVLO) circuitry on the VIN pin. The device is disabled when the VIN pin voltage is below the internal VIN UVLO threshold. The internal VIN UVLO rising threshold is 3.8 V (typical) with a typical hysteresis of 500 mV.

If an application requires a higher UVLO threshold, the EN input supports adjustable UVLO by connecting a resistor divider from the VIN to EN pin. Applying a voltage greater than or equal to 1.14 V causes the device to enter Standby mode, powering the internal LDO, but not producing an output voltage. Increasing the EN voltage to 1.231 V (typical) fully enables the device, letting it enter Start-up mode and start the soft-start period. When the EN input is brought below 1.121 V (110-mV hysteresis), the regulator stops running and enters Standby mode. Further decrease in the EN voltage to below 0.3 V completely shuts down the device.

The TPSM560R6H uses a reference-based soft start that prevents output voltage overshoots and large inrush currents as the regulator is starting up. The rise time of the output voltage is approximately 4 ms.