Snubber Circuits
Snubber Circuits
Snubber Circuits
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SNUBBER<br />
We need to control (limit) the voltage<br />
and current in a switch when it makes<br />
transition between the states because:<br />
• The switch has to be in SOA (Safe<br />
Operation Area)<br />
• The rate of change of voltage and<br />
current has to be low enough to<br />
provide reliable operation<br />
• The power dissipation during<br />
switching has to be low as much as<br />
possible (to increase efficiency and<br />
switching frequency)<br />
• Switching of a controllable switch is<br />
often accompanied by a change in<br />
state of a diode. Thus, making this<br />
transition slow enough to keep the<br />
diode’s forward recovery voltage and<br />
reverse recovery current from<br />
excessively stressing the controllable<br />
switch is often important.
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