Dimming Power LED using a SEPIC Converter and MCP163 PIC Attach PWM Controller
Created: Jul 07, 2014
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The design technology used for this application will be the Single Ended Primary Inductive Controller or SEPIC technology. The SEPIC technology allows both buck and boost operation. This allows for a constant current drive output with variations in input voltage. The SEPIC uses a current sense feedback loop for efficient control. Microchip’s MCP1631HV Digitally Controlled Programmable Current Source Reference Design is used for this application.