Freescale AC-DC 开关电源解决方案

RD56F8300SMPS : Digital AC/DC Switched-Mode Power Supply using a 56F8300 Digital Signal Controllers
A full digital power AC to DC Switched-Mode Power Supply (SMPS) system includes both digital power control and digital power management.  In digital power control, the control feedback or feed-forward loop that regulates the output of the power system is directly controlled by a 56800/E Digital Signal Controller (DSC) by driving a power switch duty cycle using a pulse width modulation technique.  The DSC also provides the digital power management function, which provides configuration, tracking, monitoring, protection, guiding supply sequence, and communication capabilities.  In a more traditional approach, the power control function would be performed using analog circuitry while the power management would be performed with a Microcontroller.

An SMPS fully digitally controlled by software running on a DSC has many advantages over mixed analog- and Microcontroller implementations.  The benefits of going to digital power conversion are:

Power applications become more flexible and universal
..

查看全文