Part Number: TPS54620
Other Parts Discussed in Thread: TINA-TI,
Tool/software: TINA-TI or Spice Models
When the average model for the TPS54620 is used to simulate the circuit of Figure 35 of the datasheet, the results do not match the measured results in Figure 36 - especially the phase response.
The gain response can be matched by assuming that C10 (output cap) is lower due to tolerance & DC bias effects ( I used 22uF) but the phase response does not roll off in the simulation as seen when measured.
What is the reason for this? Is the internal average model just a simple linear gain stage (V/A)? Do we have a model for the TPS54620 that predicts more accurate phase response?tps54620 compare.TSC
