Inductance variation based compensation in boost converter

摘要

Aspects of the present disclosure are directed to method, circuits, and apparatuses for power conversion. In an example embodiment, an apparatus includes a boost converter having a current loop affected by at least one compensation correction parameter and variation in an inductance of the current loop. The apparatus also includes a power factor correction means, including a circuit, configured and arranged to adaptively modify the compensation correction parameter based on variation in the inductance of the current loop.

主权项

1. A method comprising:
using a boost converter having a current loop, an inductor in the current loop and a switching circuit, with the boost converter being affected by at least one compensation correction parameter and variation in an inductance of the current loop and with the switching circuit being configured and arranged to close in response to pulses of a control signal, the switching circuit increasing current through the inductor when closed; using a power factor correction circuit, adaptively modifying the compensation correction parameter based on variation in the inductance of the current loop and adjusting a gain of a feedback signal based on variation in the inductance of the inductor to maintain a substantially constant cross-over frequency of the boost converter; and, adjusting a pulse width of the pulses of the control signal based on the feedback signal.