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TIDA-01606: Loss Estimations

Stephen
Prodigy 60 points
Part Number: TIDA-01606

hello

      The switching and conduction losses for Q1 and Q3 in inverter mode are given in this reference design, can you provide us with the switching and conduction losses in rectification mode and how they are calculated？

THANKS

  • 0
    TI__Mastermind 30215 points

    您好， 已经收到了您的案例，调查需要些时间，感谢您的耐心等待。

  • 0
    TI__Mastermind 30215 points

    Stephen,

    There is a good reference for loss comparison between inverter mode and pfc mode for a 25kW t type here.  this manual doesn't show the equations. The general switching and conduction losses equations for pfc and inverter are similar as shown in tida-01606.  The switching loss voltage is bit different due to the applied voltage across Q3/Q4 is the phase voltage instead of the VBUS/2 across Q1/Q2.  For PFC mode, the Q1/Q2 is soft switching.  For the inverter mode, Q3/Q4 is soft switching. 

    This white paper has some info on the operation for t type and losses for inverter and pfc modes.