米6体育平台手机版

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

3.2.2 Bias Voltage < Target

In the experiment, the target output voltage is 5 V, bias output is 4.95 V. From the test result in Figure 3-5, the result is basically same as FCCM device in Equation 8.

Figure 3-5 Test Waveform of V_bias < V_target in PSM Device

In summary, the input voltage of PSM mode device is very closed to the V_bias voltage, both in V_bias<V_target and V_bias>V_target condition and can operate safely.