High power boost converters are becoming increasingly popular among designers in the automotive, industrial and telecom industries. When power levels of 300W or more are required, high effi ciency (low power loss) is imperative in the power train components to avoid the need for bulky heat sinks and forced-air cooling. Interleaving power stages (multiphase operation) improves effi ciency and reduces ripple voltage and currents in both the input and output capacitors, allowing the use of smaller fi lter components.4-Phase Boost Converter Delivers 384W with no Heat Sink Design Note 453 Victor Khasiev Introduction need for bulky heat sinks and forced-air cooling. Inter- High power boost converters are becoming increasingly leaving power stages (multiphase operation) improves popular among designers in the automotive, industrial efciency and reduces ripple voltage and currents in and telecom industries. When power levels of 300W or both the input and output capacitors, allowing the use more are required, high efciency (low power loss) is ……