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

4.2 Demo Board Example

Figure 4-2, Figure 4-3, and Figure 4-4 demonstrate a schematic and two-layered layout example using TPS61377 to achieve Table 4-1 requirements. To minimize the output power loop, the recommendation is to add 1µF capacitor on VOUT pin to GND like C14 showing in the schematic.

GUID-A81AF081-AC9E-473E-898D-74AACE013FAF-low.png Figure 4-2 TPS61377 Schematic
GUID-75D5516E-020D-4A5F-9135-50E1A3E2083E-low.png Figure 4-3 TPS61377 Layout (Top)
GUID-606BD4B0-C36D-4E52-B235-9B9B0E7B2C54-low.png Figure 4-4 TPS61377 Layout (Bottom)