SLVAFP0 December   2023 LMR51610

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Specifications
    1. 2.1 Input Voltage Range
    2. 2.2 Output Current Range
  6. 3External Component Selection
    1. 3.1 Duty Cycle Calculation
    2. 3.2 Output Voltage Calculation
    3. 3.3 Inductor Selection
    4. 3.4 Input and Output Capacitor
    5. 3.5 Enable Level Shift
    6. 3.6 Output Clamp Diode
  7. 4Evaluation Results
    1. 4.1 Typical Performance
    2. 4.2 Loop Response Bench Verification
  8. 5Conclusion
  9. 6References
  10. 7LMR50410 Design Example
    1. 7.1 LMR50410 Output Current Range
    2. 7.2 LMR50410 Efficiency

5 Conclusion

The LMR51610 is a buck converter that can be configured as an inverting buck-boost (IBB) topology by changing the output voltage and ground connections. Since the IBB is referenced to -VOUT rather than ground, the input voltage range of the LMR51610 depending on the both input voltage and -VOUT. The maximum possible output current is also limited by input current and output current, because the maximum inductor current is always larger than the maximum output current. This report explains the IBB topology and design example of how to select the external components. Data is provided from a test circuit. For further information on the operation, refer to application note in reference next page.