SLUSFU9 October 2024 BQ51013C
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
The Dynamic Rectifier Control algorithm offers the end system designer optimal transient response for a given maximum output current setting. This is achieved by providing enough voltage headroom across the internal regulator at light loads in order 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 BQ51013C). A 1-A application allows up to a 1.5-Ω output impedance. The Dynamic Rectifier Control behavior is illustrated in Figure 7-4 where RILIM is set to 220 Ω.