Booster power converter having accelerated transient boost response

摘要

A booster power converter particularly suited for an automobile and having a compensation network that responds to a sudden negative input voltage excursion. The booster power converter responds to the negative input excursion by preventing its boosted output from falling below a predetermined voltage level so that voltage regulators, normally connected to the output stage of the booster power converter, are not distrupted in performing their desired regulation. The compensation network, upon sensing a decrease of the booster voltage below a predetermined lower limit, generates a control signal which causes the booster power converter to seek and obtain a maximum duty cycle operation. Upon sensing an increase of the booster voltage above a predetermined upper limit, the compensation network removes the control signal causing the booster power converter to cease operation at its maximum duty cycle, and return to its normal duty cycle of operation.