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Digital Power and Lighting Reference Designs and Development Boards Reference Designs Platinum Rated 720 W AC/DC Reference Design 16-bit Embedded Control Solutions 13 This reference design demonstrates the flexibility of dsPIC DSCs in Switch Mode Power Supplies. This reference design has a peak efficiency of 94.1% and achieves the ENERGY STAR® CSCI Platinum Level. It features a 2-phase interleaved power factor correction boost converter followed by a 2-phase interleaved two-switch forward converter with synchronous rectification. Quarter Brick DC/DC Converter Reference Design This reference design provides an easy method to evaluate the performance and features of SMPS DSCs in high-density quarter brick DC-DC converters. DC/DC LLC Resonant Converter Reference Design This reference design operates over a wide input voltage range (350–420V DC) with a nominal input of 400V, providing a 12V DC output while maintaining high-voltage isolation between the primary and secondary. This reference design is implemented using a single dsPIC33F “GS” digital power DSC that provides full digital control of the power conversion and system management functions. Digital Power Interleaved PFC Reference Design This reference design provides an easy method to evaluate the power and features of the SMPS dsPIC DSCs for IPFC applications. It features a universal input voltage range and produces a single high-voltage DC output up to 350 W with low Total Harmonic Distortion (THD) of the input current. Digital Pure Sine Wave Uninterruptible Power Supply (UPS) Reference Design This reference design demonstrates how digital power techniques applied to UPS applications enable easy modifications through software and allow for the use of smaller magnetics, higher efficiency and reduction in audible and electrical noise via a purer sine-wave output, USB communication and reduce cost. Grid Connected Solar Micro Inverter Reference Design This reference design demonstrates maximum power point tracking for PV panel voltages between 20–45V DC and has a maximum output power of 215 W. High efficiency is achieved by implementing a novel interleaved active-clamp flyback topology with Zero Voltage Switching (ZVS). Development Boards MPLAB® Starter Kit for Digital Power (DM330017-2) This kit uses the dsPIC33EP64GS502 DSC to implement a buck converter and a boost converter. Each converter can drive its on-board MOSFET controlled resistive load or an external load. The board has an LCD display for voltage, current, temperature and fault conditions, and an integrated programmer/debugger, all powered by the included 9V power supply. Digital LED Lighting Development Kit (DM330014) The LED lighting development kit enables designers to quickly leverage the capabilities and performance of the dsPIC33 “GS” DSCs to create a 100% digitally controlled ballast function, while including advanced features such as dimming and color hue control. The dsPIC33 “GS” devices can support an entire system implementation for LED lighting products, including power-conversion circuits, such as AC-to-DC and DC-to-DC conversion, along with function such as Power Factor Corrections (PFC). Tools and Libraries Digital Compensator Design Tool (DCDT) Use this free MPLAB® X IDE plug-in to calculate optimum compensator coefficients for maximum performance, with support for five common compensator types. Use this plug-in to analyze system response as well as stability. SMPS Compensator Library Optimized functions for the dsPIC33 family of DSCs implementing common compensator algorithms such as 2P2Z, 3P3Z and PID. These library functions are designed to be used within an application framework for realizing an efficient and flexible way of implementing the control of an SMPS application. The above tools can be downloaded from www.microchip.com/dsPIC33EP-GS. Additional information for all reference designs is available at www.microchip.com/power. www.microchip.com/power


EETE OCT 2015
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