TIDT365 November   2023

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
    3. 1.3 Considerations
    4. 1.4 Dimensions
  6. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 POUT
    4. 2.4 Idle Power Loss
    5. 2.5 THD
    6. 2.6 Thermal Images
  7. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Dead Time
    3. 3.3 Minimum Pulse on Time of LI
    4. 3.4 Output Waveform

1.3 Considerations

Considering that the class D power stage needs a sinusoidal pulse width modulation (SPWM) signal, the TLV3601 device was used to build a comparator circuit. Pin 3 of TLV3601 was connected to AFG3522, which generates a triangle waveform. Pin 4 of TLV3601 was connected to APx500, which generates a sinusoidal waveform, thus producing a SPWM waveform.

The amplitude modulation ratio of SPWM is defined as the VPP of the sine wave over VPP of the triangle wave. The amplitude modulation ratio is set to 0.73 in the test results in this report, if not indicated otherwise.

GUID-20231027-SS0I-K46Z-J4GP-ZXHCRT8WJBTB-low.svg Figure 1-1 TLV3601 Circuit