What are the Fundamental Differences Between Tigo and SolarEdge Optimizers?

The fundamental differences between Tigo and SolarEdge in Optimization are:

1. Solar Edge does both buck and boost conversion, so the output voltage goes up and down.  Tigo is a buck-only architecture.  This means that Tigo is active only when there is mismatch, so it is more efficient than SolarEdge.
2. Tigo works with virtually every MPPT-based inverter and battery charge controller, allowing the customer the freedom to choose whatever inverter they like.  With SolarEdge, you must use their inverter and their module electronics, so your choices are very limited.
3. The SolarEdge optimizer is more complex than the Tigo optimizer.  As a result, it is less efficient, has lower MTBF (mean time between failure) and is more expensive.