SLVAFA9 March   2022 TPS82130 , TPSM82903

 

  1.   Trademarks
  2. 1Introduction
  3. 2Power Density
  4. 3Achieving a Smaller Solution
    1. 3.1 Fewer External Components
    2. 3.2 Smart Configuration Pin
    3. 3.3 VSET
  5. 4Reducing Power Loss
    1. 4.1 Junction Temperature
    2. 4.2 Automatic Efficiency Enhancement (AEE™)
    3. 4.3 Switching Frequencies and FET RDS(ON)
    4. 4.4 Auto PFM/PWM vs. Forced PWM
  6. 5Application Flexibility
    1. 5.1 Quiescent Current
    2. 5.2 Lower and More Accurate Output Voltages
    3. 5.3 Capacitive Discharge
  7. 6Summary
  8. 7References

Lower and More Accurate Output Voltages

TPS821x0 supports 0.9 V as minimum output with a 1.8% Vout accuracy combined with the accuracy of the two external feedback resistors used. This covers a lot of use cases, however not all. There are applications that require lower than 0.9 Vout, or a tighter spec for Vout accuracy and have previously been unable to use the TPS821x0 because of these requirements. TPSM8290x opens up the opportunity for these applications to take advantage of its high-performance feature set by supporting as low as 0.4 V output voltage when using VSET and as low as 0.6 V using the external feedback resistor option with a <1% Vout accuracy across full temperature range. If VSET option is selected, the external resistors are not needed and thus the total system accuracy is improved for the fact that the external feedback resistor accuracy is no longer added to the feedback loop.