DC-to-DC converter with fast override feedback control and associated methods

摘要

A DC-to-DC converter includes a pulse width modulation (PWM) circuit cooperating with at least one power switch for supplying power from a source to a load over a range between a lower limit and an upper limit to thereby control an output voltage for the load. The converter may also include a primary feedback control loop cooperating with the PWM circuit for supplying power to the load between the lower and upper limits based upon the output voltage during normal load transient conditions. The converter may also include at least one override feedback control loop cooperating with the PWM circuit for overriding the primary feedback control loop and supplying power to the load at one of the lower and upper limits based upon the output voltage during a corresponding relatively fast load transient condition. Accordingly, relatively fast load transients can be followed by the converter.