1.6kW Bidirectional GaN Micro Inverter Reference Design

It provides vital benefits in energy density, switching frequency, and system price, making it a worthwhile asset for contemporary renewable vitality purposes.

The urgent want for vitality sustainability and safety is driving the speedy adoption of renewable vitality options, significantly photo voltaic vitality and vitality storage programs. In residential settings, micro inverters supply a pretty steadiness between price, effectivity, and ease of set up for end-users. Nevertheless, integrating vitality storage programs with current micro inverters poses a problem as a result of absence of bidirectional converters in these gadgets. 

This reference design TIDA-010933 by TI  introduces a four-input bidirectional 1.6kW GaN-based micro inverter with built-in vitality storage capabilities. The design showcases a 1.6kW single-phase bidirectional micro inverter that leverages GaN know-how. It options 4 similar channels, every supporting as much as 60 V and ±14 A on the DC aspect. These channels are suitable with photovoltaic (PV) panels or 48-V Battery Power Storage Programs (BESS). On the high-voltage (HV) aspect, the inverter connects to a single-phase AC grid. Isolation between the low-voltage (LV) and HV sides is achieved by way of a bidirectional fixed-frequency CLLLC converter. The management algorithm is carried out utilizing a C2000 MCU.

This design has high-power density, which maximizes energy output whereas minimizing the bodily footprint. It operates at a high-switching frequency, permitting for using smaller passive EMI filter elements, thereby bettering effectivity and lowering dimension. The design provides versatile channel operation, with any of the 4 channels able to functioning as a PV enter or connecting to a 48V battery storage system, offering flexibility in vitality administration. It makes use of a single-chip controller with a C2000 MCU to handle DC/AC, DC/DC, and Most Energy Level Monitoring (MPPT) capabilities comprehensively. Efficient widespread mode isolation is achieved by way of an remoted DC/DC topology, enhancing security and reliability. Moreover, the design is an economical system resolution, aiming to attenuate total system prices with out sacrificing efficiency.

The totem-pole topology was chosen for this micro inverter reference design as a result of its superior efficiency and decrease price in comparison with different DC/AC topologies, regardless of producing greater widespread mode noise than options like H-bridge, bipolar, or Extremely Environment friendly and Dependable Inverter Idea (HERIC). This reference design is good for purposes resembling micro inverters in residential solar energy programs, offering environment friendly and versatile vitality conversion and storage, and energy conversion programs (PCS) that improve the effectivity and reliability of renewable vitality purposes. Total, it provides a flexible and environment friendly vitality resolution for residential photo voltaic programs, combining a high-performance micro inverter with vitality storage capabilities, supported by a four-input bidirectional 1.6kW GaN-based structure.

Texas Devices (TI)has examined this reference design. It comes with a invoice of supplies (BOM), schematics, meeting drawing, printed circuit board (PCB) format, and extra. The corporate’s web site has extra information in regards to the reference design. To learn extra about this reference design, click on right here.