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SMPS Solar Power

Renewable resources, especially solar power and Photovoltaic (PV) systems, have gained great visibility during the past few years as convenient and promising renewable energy sources. Solar power systems offer several benefits, such as:

  • Clean and renewable energy that replaces power produced by coal, oil and nuclear power
  • Reduction/elimination of electric bills
  • Ample resources since silicon for manufacturing PV panels is the second most abundant element on Earth
  • The ability to provide power to remote locations

Our grid-connected solar microinverter reference design, featuring a dsPIC® Digital Signal Controller (DSC), has a maximum power output of 215W and provides a high efficiency of ~94% at nominal conditions (230V AC). We also offer a portable solar charging reference design based on an 8-bit PIC16F microcontroller (MCU) that can charge a 24V battery system from a 130W/12V solar panel. This design can provide 1.3 kWh of energy in 10 hours of charging time.


Solar Micro Inverter

Solar Power Reference Designs

Grid-Connected Solar Microinverter Reference Design

Our Grid-Connected Solar Microinverter Reference Design demonstrates the flexibility and power of SMPS dsPIC DCS in grid-connected solar microinverter systems. This reference design has a maximum output power of 215W and ensures maximum power point tracking for PV panel voltages between 20V to 45V DC. Its high efficiency was achieved by implementing a novel interleaved active-clamp flyback topology with Zero Voltage Switching (ZVS).

Solar Power Application Notes

Solar MPPT Battery Charger for the Rural Electrification System (AN2321)

This application note  describes how to develop a portable solar charging system for use in a rural area.

Would you like to learn more about the advantages of switching to digital power supplies? Click on the link below to download our Features, Value and Benefits of Digital Control for Power Supplies white paper.

Recommended Products

dsPIC Digital Signal Controllers

Product Core Number of Pins Program Flash (KB) RAM (KB) IC/OC/
SMPS PWM ADCs Number of Op Amps/ PGAs Number of Analog Comparators Number of UART/I2C/
SPI Interfaces
dsPIC33EP 'GS' Family 70 MIPS Single Core Up to 80 Up to 128 Up to 8 4/4 16 Channels 1 nS 22 × 12-bit, 5x S/H 2 4x
dsPIC33CK 'MP' Family 100 MIPS Single Core Up to 80 Up to 256 Up to 24 9 16 Channels 250 pS 24 × 12-bit,
3x S/H
3 3 3/3/3
dsPIC33CH 'MP' Family 100 MIPS Dual Core Up to 80 Up to 512/72 Up to 48 + 16 8 + 4 8+4 Channels 250 pS 18 × 12-bit, 4x S/H 3 3 3/3/3
IC = Input Capture
OC = Output Compare
MCCP = Multiple Capture/Compare/PWM
SCCP = Single Capture/Compare/PWM
SMPS PWM = Power Supply Pulse Width Modulation

Voltage Regulators

  • MCP16301 – 30V non-synchronous buck regulator
  • MCP1700 - Low quiescent current LDO regulator

Operational Amplifier

  • MCP6022 – 10 MHz, 1 mA, low-power dual op amp

Temperature Sensor

  • MCP9700A – Low-power linear active thermistor IC, analog output


  • MCP14E4  – 4.0A dual high-speed power MOSFET driver with enable function for each output