SLYY193C january   2023  – april 2023 LMQ61460-Q1 , TPS54319 , TPS62088 , TPS82671 , UCC12040 , UCC12050

 

  1.   At a glance
  2.   Authors
  3.   3
  4.   What is power density?
  5.   What limits power density?
  6.   What limits power density: switching losses
  7.   Key limiting factor No. 1: charge-related losses
  8.   Key limiting factor No. 2: reverse-recovery losses
  9.   Key limiting factor No. 3: turn-on and turn-off losses
  10.   What limits power density: thermal performance
  11.   How to break through power density barriers
  12.   Switching loss innovations
  13.   Package thermal innovations
  14.   Advanced circuit design innovations
  15.   Integration innovations
  16.   Conclusion
  17.   Additional resources

How to break through power density barriers

Choosing to focus on just one of the key elements highlighted in the previous sections can result in overall power density improvements. To really achieve previously unreachable power densities, however, you must attack each factor limiting density in parallel: reducing switch losses; improving package thermal performance; adopting innovative topologies and circuits; and last but not least, integrating.