https://www.ti.com/ POWER-SUPPLY DESIGNS 19 www.power-mag.com Issue 2 2025 Power Electronics Europe devices in the TOLL package can achieve greater than 99% efficiency in the PFC stage and greater than 98% efficiency in the DC/DC stage across the topologies I mentioned earlier. Solar microinverters Solar energy as a power source is on the rise. As shown in Figure 3, both the bidirectional DC/DC and the PFC and inverter stage can use an integrated GaN TOLL device to convert the solar panel Figure 1. Circuit parasitics integrated GaN power stage vs. discrete GaN LEFT: Figure 2. PSU block diagram BELOW: Figure 3. Microinverter block diagram
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