SLUAAO0 june   2023 TPS563207S

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Lower Output Voltage Than Reference by AVS Control
  6. 3Simulation Result with TPS563252
  7. 4Test Results with TPS563252
  8. 5Summary
  9. 6References

Abstract

In typical Buck circuit, the output voltage is higher than reference voltage. Currently, the reference voltage is about 0.6 V or 0.8 V. SoC has a trend which requires a lower and lower supply voltage, sometimes even lower than 0.6 V. This article introduces a step to receive an output voltage lower than reference voltage. The circuit uses adaptive voltage scaling (AVS) to receive a lower output voltage and dynamic adjust output voltage to meet SoC requirement. This article also introduces theory analysis and simulation of this AVS. An example of TPS563252 is given to demonstrate achieving this new method.