dsPIC SMPS AC-DC Reference Design

ophilpott — Thu, 07 Oct 2021 07:53:14 GMT

Current Revision posted to Documents by ophilpott on 10/7/2021 7:53:14 AM

Summary
This reference design provides an easy method to evaluate the power, and features of SMPS dsPIC® Digital Signal Controllers for high wattage AC - DC conversion application. Discover the many benefits of digital power control implementation in this reference design. The SMPS AC - DC Reference Design unit works with universal input voltage range, and produces multiple DC outputs. The design is based on a modular structure, which features three major power stages; the input stage, intermediate stage and the third stage, a Point of Load. The input stage is a PFC Boost Converter, the intermediate stage is a Phase-Shifted Zero Voltage Transition (ZVT) Converter, which includes ZVT Full Bridge Converter and Synchronous Rectification, and the third stage is Single-phase and Multi-phase Buck Converters. This reference design uses two dsPIC33F16GS504 devices; one used for the PFC Boost Converter and ZVT Full Bridge Converter, while the other dsPIC® DSC is used for Single-phase and Multi-phase Buck Converters.

Features
Key features of SMPS AC - DC Reference Design

Operates at universal input voltage (85-265Vac, 45-65Hz)
Operates up to 300W sustained output
Full Load operation on 3.3V and 5V outputs when loaded individually and/or simultaneously:

o 3.3V output @ 56A

o 5V output @ 23A

Power Factor Performance of 0.99 at full load (110Vac/220Vac)
Fault Indication and Protection
Excellent Dynamic Load Performance and Output Sequencing
Separate boards, one for digital signals (Signal Board) and the other for the Power stages (Power Board)
Signal Board has two dsPIC33F16GS504 devices controlling different power stages
MPLAB® ICD 2 or REAL ICE support

Package Contents:

Integrated Signal Board and Power Board with enclosure
Documentation CD consisting of:

o AC - DC SMPS Reference Design Software

o AC - DC Schematics and PCB Layout files

o AC - DC SMPS Reference Design User’s Guide

o Test Results

o Readme file

Cable Assembly

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Tags: smps, microchiprenewable, sp:microchip, renewable, dspic