Lag compensating controller having an improved transient response

A controller for use in a DC-to-DC converter, the controller comprising:

• a first gain element configured to provide a first predetermined gain to an output error signal describing an error in the output of the DC-to-DC converter;
• a compensator including
• a control loop including a storage element, the control loop receiving the output error signal,
• a second gain element configured to provide a second predetermined gain to the output of the control loop, and
• a detector configured to modify the contents of the storage element according to a predetermined adjustment value when a minimum predetermined excursion occurs in the output error signal;
• and
• a combiner configured to combine the outputs of the first and second gain elements to produce an output control signal for the DC-to-DC-converter.

A DC-to-DC converter comprising:

• a controller including
• a first gain element configured to provide a first predetermined gain to an output error signal describing an error in the output of the DC-to-DC converter;
• a compensator including
• a control loop including a storage element, the control loop receiving the output error signal,
• a second gain element configured to provide a second predetermined gain to the output of the control loop, and
• a detector configured to modify the contents of the storage element according to a predetermined adjustment value when a minimum predetermined excursion occurs in the output error signal;
• and
• a combiner configured to combine the outputs of the first and second gain elements to produce an output control signal for the DC-to-DC converter.

An apparatus for use in a control system controller having a control loop that includes a storage element, the control loop receiving an output error signal describing an error in the output of the control system, the apparatus comprising:

• means for modifying the contents of the storage element according to a predetermined adjustment value when a minimum predetermined excursion occurs in the output error signal;
• means for providing a first predetermined gain to the output error signal;
• means for providing a second predetermined gain to the output of the control loop;
• and
• means for combining the outputs of the first and second gain elements to produce an output control signal.