TI's C2000™ Solar Micro Inverter Development Kit provides complete hardware and software for high-performance solar power systems

Based on real-time control C2000 Piccolo™ F28035 microcontroller (MCU), new kit completes TI's full suite of solar solutions for a broad range of solar power applications

HOUSTON, May 15, 2014 — (PRNewswire) —  Easing design for rapidly growing solar power applications, Texas Instruments (TI) (NASDAQ: TXN) announces its C2000™ Solar Micro Inverter Development Kit. The kit implements a complete grid-tied solar micro inverter based around TI's C2000 Piccolo™ TMS320F28035 microcontroller (MCU). Solar micro inverters are an emerging segment of the solar power industry. Rather than linking all solar panels in an installation together to a central inverter, solar micro inverter systems place smaller, or "micro," inverters at the output of each individual solar panel. This configuration lends itself to many benefits, including elimination of partial shading conditions, increased system efficiency, improved reliability and greater modularity. Through the combination of the innovative features of the C2000 Piccolo F28035 MCU and the unique hardware design, the C2000 Solar Micro Inverter Development Kit provides a distinguishing platform to design highly efficient and reliable grid-tied solar micro inverters.

Easing solar micro inverter design
While a solar micro inverter yields many benefits, it also poses complex challenges to designers. Designers must grapple with non-linear characteristics of the solar panel power output, devise technical maximum power point tracking (MPPT) algorithms to maximize the energy delivery, and understand complex power stage design and control. Likewise, they must identify a suitable controller with the performance and flexibility to implement these complex functions that is also straightforward to work with. The C2000 Solar Micro Inverter Development Kit, based on TI's F28035 MCU, introduces designers to a fully suitable MCU and methodically addresses the application challenges by breaking down the development process into manageable pieces. Users can evaluate the design initially through a simple graphical interface without the need to dive into code development. When ready to explore in further depth, detailed theory-based documentation guides users step by step through the software and hardware implementation by incrementally building from open loop to closed loop operation of the solar micro inverter.

Features and benefits of the C2000 Solar Micro Inverter Development Kit:

  • Implements control of an active clamp flyback DC/DC converter with secondary voltage multiplier, MPPT and a grid-tied DC/AC inverter, comprising the power conversion stages of the solar micro inverter.
  • Supports panel voltages of 28 to 45V at input as well as universal power output at up to 280W for 220VAC and up to 140W for 110VAC, making it suitable for the diverse requirements of worldwide solar markets.
  • 93-percent peak efficiency and less than four percent total harmonic distortion (THD) provide more power output per solar panel, reducing detrimental heat dissipation and increasing system longevity.
  • C2000 Piccolo F28035 MCU serves as a high-performance controller for the complete micro inverter system, executing high-frequency control loops for the DC/DC and DC/AC power stages.
  • Single MCU system implementation offers design simplicity and reduced system cost.
  • C2000 Piccolo F28035 MCU operates the inverter at a high PWM frequency, 100 KHz, to reduce harmonic distortion and lower passive component costs.
  • Integrated features of the C2000 Piccolo F28035 MCU enable efficient control of each power stage: 4.6 MSPS 12-bit analog-to-digital converter, low latency C28x real-time processing core and feature-packed, 150 ps high-resolution PWM modules.
  • Complete software source code, hardware design files and detailed documentation allow designers to see and understand exactly how the design was implemented, creating the foundation to begin their own unique solar power implementations.
  • Solar and digital power software libraries provide code-optimized building blocks to implement a variety of power topologies and algorithms such as MPPT and Software Phase Locked Loops (PLL), perfect for designing customized solar inverter solutions.
  • The UCC27531 and UCC27211 high-performance gate drivers used in the kit allow for high efficiency with low propagation delay of 17ns, negative voltage handling for noisy environments and high supply voltage (UCC27531) for switching IGBTs.

Pricing and availability
The new C2000 Solar Micro Inverter Development Kit ( TMDSSOLARUINVKIT) is available today for $850 USD. TI also offers complementary solar development platforms for centralized or string solar inverter topologies: The C2000 High-Voltage MPPT Kit ( TMDSHVMPPTKIT) for $550 and the C2000 High-Voltage Single-Phase Inverter Kit ( TMDSHV1PHINVKIT) for $450. All solar development kits can be purchased today through the TI eStore and come complete with a full suite of software libraries, examples and full reference hardware packages. Designers can begin browsing the software and design resources of these kits for free in the C2000 controlSUITE™.

Innovation is at the core of TI MCUs
Beginning with the foundation of leading process technology and adding unique system architecture, intellectual property and real-world system expertise, TI continues its 20+ years of MCU innovation with ultra-low-power MSP MCUs, real-time control C2000 MCUs, TivaARM® MCUs and Hercules safety MCUs. Designers can accelerate time to market with TI's ecosystem of tools, software, wireless connectivity solutions, extensive Design Network offerings and technical support.

About Texas Instruments
Texas Instruments Incorporated (TI) is a global semiconductor design and manufacturing company that develops analog ICs and embedded processors. By employing the world's brightest minds, TI creates innovations that shape the future of technology. TI is helping more than 100,000 customers transform the future, today. Learn more at www.ti.com.

C2000, Piccolo, Hercules, Tiva and controlSUITE are trademarks of Texas Instruments Incorporated. All registered trademarks and other trademarks belong to their respective owners.

SOURCE Texas Instruments

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