PowerWise® Design University

Efficiency and Thermal Response of Buck Regulators

A good thermal layout is always a good layout for low EMI as well.
True
False

IC regulators have limitations on the temperature of __________.
The internal "junctions"
The leads
The external surface of the package
The board temperature

The junction temperature of a regulator IC can be reduced by _________.
Increasing airflow by use of a fan
Relocating the IC away from other heat sources
Increasing the copper thickness of the PC Board
All of the above

In a buck regulator, the greatest sources of power dissipation are usually the __________.
Output capacitor
Diode
IC switch
Diode and IC Switch