Controlled Electronic System Power Dissipation via an Auxiliary-Power Dissipation Circuit

摘要

An electronic system and method include a controller to actively control transfer of excess energy to an auxiliary-winding of an auxiliary power dissipation circuit. The excess energy is a transfer of energy from a primary winding of a switching power converter to the auxiliary-winding of the auxiliary power dissipation circuit. In at least one embodiment, the electronic system is a lighting system that includes a triac-based dimmer. The excess energy is energy drawn through the primary-side winding of the switching power converter to provide operational compatibility between a dimmer through which a power supply provides energy to the switching power converter and a load to which the switching power converter provides energy.

主权项

1. An apparatus comprising:
a controller configured to generate an excess energy control signal to control a transfer of excess energy, drawn from a power supply through a primary-side winding of a switching power converter, to an auxiliary-winding of an auxiliary power dissipation circuit to dissipate the excess energy, wherein the excess energy comprises energy drawn through the primary-side winding of the switching power converter to provide operational compatibility between a dimmer and a load.