High current dual DC/DC converter operates from 3.3V input
Ajmal Godil
Abstract
The LTC1702, a 2-phase dual switching regulator controller optimized for high efficiency with input voltage ranging from 2.7V to 7.0V, is described.
Keywords
DC/DC converter
Switching regulator controller
LTC1702
In many telecommunication applications, isolated DC/DC “brick” modules are used to step 48V down to 3.3V. However, it may be necessary to generate 2.5V and 1.8V from the 3.3V supply to power a DSP, microprocessor and/or an ASIC. Formerly, linear regulators were commonly used for these applications, but since the current demanded by these loads has increased significantly (10A is not unusual), using a 54% efficient linear regulator (V ...
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