SNVAA63 March   2023 TPSM365R6

 

  1.   Abstract
  2.   Trademarks
  3. 1Inverting Buck-Boost Topology
    1. 1.1 Concept
    2. 1.2 Output Current Calculations
    3. 1.3 VIN and VOUT Range in Inverting Configuration
  4. 2Design Considerations
    1. 2.1 Additional Bypass Capacitor and Schottky Diode
    2. 2.2 Start-up Behavior and Switching Node Consideration
  5. 3External Components
    1. 3.1 Capacitor Selection
    2. 3.2 System Loop Stability
  6. 4Typical Performance
  7. 5Digital Pin Configurations
    1. 5.1 Digital Input Pin
    2. 5.2 Power-Good Pin
  8. 6Conclusion
  9. 7References

1 Abstract

The TPSM365R6 is a 3.5 × 4.5 mm2 0.6-A rated synchronous step-down power module that features a wide operating input range from 3.6 V to 65 V with an adjustable output voltage range from 1 V to 13 V. The TPSM365R6 can be configured into an inverting buck-boost (IBB) topology with the output voltage inverted with respect to input voltage. This application report shows how the TPSM365R6 EVM board can be configured for an inverting application. Additional level-shifter circuitry for the EN and PGOOD pins are also included in this application note.