SLVAFK9 November   2023 TPS61033 , TPS61033-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Power Good Indicator
  6. 3Output Discharge Function
    1. 3.1 Why We Need Output Discharge Function
    2. 3.2 How to Choose Dummy Resistor
  7. 4Experimental Results
  8. 5Summary
  9. 6References

4 Experimental Results

The following is an example of proposed circuit. Figure 4-1 lists the external components. The test circuit is based on TPS61033 EVM. The output voltage is set to 5.0 V, output capacitor is 2×22 μF/0603/10 V ceramic capacitor, and the dummy resistor is set to 200 Ω.

GUID-20231023-SS0I-PXG4-FDW0-PTNKBCC8WK8C-low.svg Figure 4-1 Test Circuit

Figure 4-2 shows the test results about output discharge function with the circuit above. The discharge time is about 25 ms when the output voltage is discharged to 10% nominal voltage (500 mV).

GUID-20231009-SS0I-XMXV-FQ63-6Z6RCHJGWFPZ-low.svg Figure 4-2 Output Discharge Function of TPS61033