Bootstrap biasing of high input voltage step-down controller increases converter efficiency
Goran Perica and Victor Khasiev
Abstract
The high voltage buck DC/DC controllers LTC3890 (dual output) and LTC3891 (single output), which are popular in automotive applications due to their extremely wide 4V to 60V input voltage range, are described.
Keywords
Buck DC/DC controller
LTC3890
LTC3891
Introduction
High voltage buck DC/DC controllers such as the LTC3890 (dual output) and LTC3891 (single output) are popular in automotive applications due to their extremely wide 4V to 60V input voltage range, eliminating the need for a snubber and voltage suppression circuitry. These controllers are also well suited for 48V telecom applications ...
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