Systems, methods, and apparatuses are disclosed for determining dead-times
in switched-mode DC-DC converters with synchronous rectifiers or other
complementary switching devices. In one embodiment, for example, a
controller for a DC-DC converter determines dead-times for switching
devices of a synchronous rectifier or other complementary switching
device of the converter in which a dead-time is derived from an output
voltage or current that is already sensed and used in the output
regulation of the converter. In another embodiment, a controller is
provided for controlling a switched-mode DC-DC converter comprising a
pair of power switches. The controller comprises an input, a reference
generator, a comparator, a compensator, a dead-time sub-controller, and a
modulator. In another embodiment, the controller may adjust the
dead-times during the operation of the converter to adjust periodically
and/or in response to changes in operating conditions. In addition,
methods of determining dead-times of control signals for a switched-mode
DC-DC converter comprising a pair of power switches and of controlling a
DC-DC converter are also disclosed.