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Three Compact Solutions for High Step-Down Voltage Ratios (Download)
May 25, 2022
System designers can be faced with the challenge of downconverting high dc input voltages to very low output voltages at high output current (such as 60 V down to 3.3 V at 3.5 A), while maintaining high efficiency, small form factor, and simple design.
Combining high input-to-output voltage difference with high current automatically excludes the linear regulator due to the excessive power dissipation. Consequently, the designer must opt for a switching topology under these conditions. However, even with such topologies, it’s still challenging to implement a design that’s sufficiently compact for space-restricted applications.