This paper examines the limitations to increasing power density and provides technology examples that can help designers overcome these barriers.
|1 What is power density?|
Power density can be viewed several ways depending on the application, but the goal remains the same: Reducing solution size leads to improvements in power density.
|2 What limits power density?|
The primary factors limiting a designer’s ability to improve power density are converter power losses — including conduction, charge-related, reverse-recovery, and turn-on and turn-off losses — and the thermal performance of the system.
How to break through power density barriers
Designers must attack each limiting factor in parallel: reducing switch losses; improving package thermal performance; adopting innovative topologies and circuits; and embracing more passive integration.