SLVSC33A August   2013  – October 2022 TPS54625

PRODUCTION DATA  

  1. 1 FEATURES
  2. 2 APPLICATIONS
  3. 3 DESCRIPTION
  4. 4 ORDERING INFORMATION (1)
  5. 5 ABSOLUTE MAXIMUM RATINGS
  6. 6 THERMAL INFORMATION
  7. 7 RECOMMENDED OPERATING CONDITIONS
  8. 8 ELECTRICAL CHARACTERISTICS
  9. 9 DEVICE INFORMATION
  10. 10OVERVIEW
  11. 11DETAILED DESCRIPTION
    1. 11.1 PWM Operation
    2. 11.2 PWM Frequency and Adaptive On-Time Control
    3. 11.3 Soft Start and Pre-Biased Soft Start
    4. 11.4 Power Good
    5. 11.5 Output Discharge Control
    6. 11.6 Current Protection
    7. 11.7 Over/Under Voltage Protection
    8. 11.8 UVLO Protection
    9. 11.9 Thermal Shutdown
  12. 12TYPICAL CHARACTERISTICS
  13. 13DESIGN GUIDE
    1. 13.1 Step By Step Design Procedure
    2. 13.2 Output Voltage Resistors Selection
    3. 13.3 Output Filter Selection
    4. 13.4 Input Capacitor Selection
    5. 13.5 Bootstrap Capacitor Selection
    6. 13.6 VREG5 Capacitor Selection
  14. 14THERMAL INFORMATION
  15. 15LAYOUT CONSIDERATIONS
  16. 16Revision History

Package Options

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

11.5 Output Discharge Control

TPS54625 discharges the output when EN is low, or the controller is turned off by the protection functions (UVP, UVLO and thermal shutdown). The device discharges the output using an internal 100-Ω MOSFET which is connected to VO and GND. The internal low-side MOSFET is not turned on for the output discharge operation to avoid the possibility of causing negative voltage at the output.