Solar Inverter Solution
Application
Description
Optimized gate driver and power stack solution for commercial solar inverters from 30kW to 125kW. Features cost-effective 2FSC0235+ drivers and air-cooled FSS power stacks with >97.5% efficiency.
Core Advantages
Recommended Bill of Materials (BOM)
| Item | Part Number | Description | Quantity | Datasheet |
|---|---|---|---|---|
| 1 | 2FSC0235+ | Digital gate driver core | 6 | 📄 Download |
| 2 | FSS50-1200 | 50kW power stack | 2 | 📄 Download |
| 3 | GD3160 | Gate drive power supply | 6 | 📄 Download |
Applications
Technical Specifications
Customer Success Stories
North American Solar Developer
Solar Energy | 75kW Commercial Rooftop Inverter
Challenge
The customer needed a compact, cost-effective inverter solution for commercial rooftop installations. Space constraints required high power density, and air cooling was preferred over liquid for maintenance simplicity. Efficiency target was >97% with 25-year warranty requirements.
Solution
Firstack provided the solar inverter solution using 2FSC0235+ gate drivers and FSS50-1200 power stacks. The air-cooled design eliminated liquid cooling infrastructure. Digital programmability enabled MPPT optimization across varying irradiance conditions. The compact footprint fit within rooftop space constraints.
Results
The inverter achieved 97.8% peak efficiency, exceeding the 97% target. The compact design (40% smaller than previous generation) enabled installation in space-constrained rooftops. After 2 years of operation across 200+ installations, reliability has been excellent with zero field failures. The solution has become the customer's standard for 50-100kW commercial inverters.
European Industrial Manufacturer
Industrial Solar | 100kW Industrial Solar + Storage System
Challenge
Developing a combined solar and battery storage inverter for industrial applications. The solution needed bidirectional power flow, wide DC voltage range, and compatibility with both PV strings and battery banks. Efficiency and reliability were critical for ROI.
Solution
Implemented Firstack's solar solution with enhanced bidirectional capability. The 2FSC0235+ drivers' programmability supported both boost (solar) and buck-boost (battery) modes. Wide DC voltage range accommodated varying PV and battery conditions. The air-cooled design suited industrial environments.
Results
The system achieved 97.5% efficiency in both directions with seamless mode transitions. The wide voltage range (500-850V) supported various battery configurations. After 18 months of operation, the system has maintained 99.5% availability. The customer has expanded the product line to 125kW using FSS100-1200 stacks.
FAE Expert Insights
Sarah Chen
FAE - Solar Power Systems
8 years
Professional Insights
[Data Pending] FAE insights to be added based on actual application experience with this solution.
Key Takeaways
- 2FSC0235+ provides optimal cost-performance for commercial solar
- 8-12kHz switching frequency typically provides best efficiency
- Wide MPPT range (500-850V) accommodates various string configurations
- Air-cooled design eliminates liquid cooling maintenance
- Digital programmability enables seasonal optimization
Decision Framework
Solution Selection Decision Framework
Steps:
- Evaluate application requirements and performance metrics
- Compare solution advantages considering cost and supply chain
- Reference success cases and customer feedback
- Consult FAE for professional recommendations