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SLVAFD6 July 2022 TPS564247 , TPS565242

Abstract
Trademarks
1Introduction
2Analysis of the Floating-Input Pre-bias Output Operation
1. 2.1 Analysis of FCCM Device
2. 2.2 Analysis of PSM Device
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
4Summary
5References

3.2.1 Bias Voltage > Target

In the experiment, the target output voltage is 5 V, bias output is 5.05 V. From the test result in Table 3-3, V_in is very close to the bias voltage, which confirm the derivation in Equation 1.

Table 3-3 Test Result of V_bias>V_target in PSM Device

Test device	V_bias	V_in measured
TPS565242	5.05 V	4.52 V

Figure 3-4 Test Waveform of V_bias > V_target in PSM Device