The is a specialized Sinusoidal Pulse Width Modulation (SPWM) drive board commonly used as the "brain" for pure sine wave inverters. Positioned as a balanced iteration in the hardware series, the V1.5 bridge provides a stable interface between low-voltage control signals and high-power output stages. Technical Overview
Every real inverter suffers from dead time (the brief pause where both transistors in a leg are off to prevent a short circuit). This dead time causes zero-crossing clamping distortion. The utilizes an adaptive dead-time compensation algorithm. By measuring the current polarity at the output, the firmware adds or subtracts a compensation pulse, effectively "healing" the sine wave at the zero crossing. spwm-driver v1.5
Whether you are building a 3kW solar inverter for your off-grid cabin or a precision spindle driver for a CNC router, the V1.5 offers a professional-grade foundation. By understanding its modulation limits and thermal characteristics, you can unlock efficiency ratings of 98%. The is a specialized Sinusoidal Pulse Width Modulation
Integrated real-time feedback for over-voltage, under-voltage, over-current, and over-temperature protection. This dead time causes zero-crossing clamping distortion
Features four programmable dead-time settings (300nS, 500nS, 1.0uS, and 1.5uS) to prevent "shoot-through" in the H-bridge MOSFETs.
When paired with a properly sized transformer and LC filter, the V1.5 delivers a clean pure sine wave