SLUSBC8C December 2013 – July 2018
The Dynamic Rectifier Control algorithm offers the end system designer optimal transient response for a given max output current setting. This is achieved by providing enough voltage headroom across the internal regulator at light loads to maintain regulation during a load transient. The WPC system has a relatively slow global feedback loop where it can take more than 90 ms to converge on a new rectifier voltage target. Therefore, the transient response is dependent on the loosely coupled transformers output impedance profile. The Dynamic Rectifier Control allows for a 2-V change in rectified voltage before the transient response will be observed at the output of the internal regulator (output of the bq51003).