Digital control without the cost penalty

摘要

Like many projects, the Electronic Products' 2009 POY winner BMR453 digitally controlled dc/dc converter started out as research into what might be possible using new technologies - in this case how digital power control may improve on analog methods, and lower the cost of ownership. The platform the company chose to investigate is based on a Texas Instruments IC originally designed to control a rela-rntively simple buck converter, which meant that many changes were necessary to adapt it to an isolated intermediate-bus topology. Thus, the chip that Ericsson uses is the result of co-development between the two companies in areas that include the silicon architecture and firmware.