SLVAFU0 April   2024 TPS61377

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Analysis of Dual Polarity Voltage Rails Design With Boost Converter
    1. 2.1 Analysis of Factors Affecting Negative Voltage Rail
    2. 2.2 Improvement of Gap Between Negative Voltage Rail and Positive Voltage Rail
  6. 3Boost Converter ± Quick Calculator Design
  7. 4Demo and Test
    1. 4.1 Simulation Results
    2. 4.2 Demo Board Example
  8. 5Summary
  9. 6References

2 Analysis of Dual Polarity Voltage Rails Design With Boost Converter

Figure 2-1 shows the typical circuit of dual polarity voltage rails design with asynchronous boost converter. The image uses the RCHG, CCHG, D2 and D3 to achieve the negative voltage rail.

GUID-2ECC4C33-A110-415F-9CA0-79DD1A2BC8B1-low.png Figure 2-1 Typical Circuit of Dual Polarity Voltage Rails Design With Asynchronous Boost Converter