SLVAFD6 July   2022 TPS564247 , TPS565242

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
  4. 2Analysis of the Floating-Input Pre-bias Output Operation
    1. 2.1 Analysis of FCCM Device
    2. 2.2 Analysis of PSM Device
  5. 3Experimental Verification
    1. 3.1 FCCM device
      1. 3.1.1 Bias Voltage > Target
      2. 3.1.2 Bias Voltage < Target
    2. 3.2 PSM device
      1. 3.2.1 Bias Voltage > Target
      2. 3.2.2 Bias Voltage < Target
  6. 4Summary
  7. 5References

3 Experimental Verification

In this section, device TPS56524(2/7) [4] is used to verify the analysis and derivation results. TPS56524(2/7) is a high-performance synchronous buck converter with D-CAP3 control structure. It can support input voltage from 3 V to 16 V and 5 A output current with such a small package of SOT-563. TPS565242 is PSM device and TPS565247 is FCCM device. In the experiment, the set up is show in Figure 3-1, with floating input and bias output.

Figure 3-1 Experiment Schematic