DM300027 Microchip Technology, DM300027 Datasheet - Page 52

• Manufacturer Part Number: DM300027
• Description: BOARD DEV STARTER PIC24 28-PIN
• Manufacturer: Microchip Technology
• Type: MCUr

Specifications of DM300027

• Contents: Board, Cables, CD, Sample Part
• Processor To Be Evaluated: dsPIC30F/PIC24F/dsPIC33F
• Data Bus Width: 16 bit
• Interface Type: USB
• Silicon Manufacturer: Microchip
• Core Architecture: PIC, DsPIC
• Core Sub-architecture: PIC24, DsPIC30, DsPIC33
• Silicon Core Number: PIC24F, DsPIC30F, DsPIC33F
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: dsPIC30F/33F and PIC24
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Summary
This reference design demonstrates the flexibility and power
of SMPS dsPIC Digital Signal Controllers in grid connected
power conversion systems. This reference design works
with any photovoltaic (PV) panel of maximum 220 Watts
having open circuit voltage between 25V to 55 VDC. This
reference design ensures maximum power tracking for PV
panel voltage between 25V to 45 VDC. Two versions of this
reference design are available to support 110V and 220V
grid.
Key Features
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Summary
Microchip’s 200W DC/DC LLC Resonant Converter Reference
Design operates over a wide input voltage range (350-420
VDC) with a nominal input of 400V, providing a 12 VDC
output, while maintaining high-voltage isolation between the
primary and secondary. High efficiency is achieved through
Zero Voltage Switching (ZVS) on the half-bridge converter and
Zero Current Switching (ZCS) on the synchronous rectifier. A
synchronous rectifier is implemented over the traditional full
wave rectifier for improved efficiency. The reference design
utilizes Microchip’s digital power conversion dsPIC® DSC for
unique “adaptive” control of the half-bridge converter and
synchronous rectifier.
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. As shown in this reference design the dsPIC33F
‘GS’ device enable designers to easily and cost effectively
create products using advanced switching techniques such
as LLC that lower switching losses and enable efficiencies
as high as 95%. The DC-DC LLC Converter Reference Design
is royalty free when used in accordance with the licensing
agreement.
Grid-Connected Solar Micro Inverter Reference Design
Using a dsPIC® DSC
Application Note: AN1338 • Ready-to-Use Solution
DC/DC LLC Converter Reference Design Using a dsPIC® DSC
Application Note: AN1336 • Ready-to-Use Solution
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Peak efficiency of 94%
Output current THD < 5%
Power factor >0.95
Maximum power point tracking
Grid voltage and frequency tracking
Proven Software Source Code
Proven Software Source Code
Software Solutions and Tools for the 16-bit and 32-bit Designer
Grid Connected Solar Micro Inverter
Reference Design
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Key Features
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DC/DC LLC Converter
Reference Design
Protection against various current and voltage faults
System islanding to detect grid failure
Full digital control
Supports dsPIC33F devices
Low power consumption at no load
Programmable soft-start
Voltage, current, temperature monitoring and
protection
Primary and secondary MOSFET control
Full digital control