Traditional analog power supplies struggle to keep up with today’s performance and control accuracy requirements, which have gotten way stricter. Even though digital power supplies work better, they’re just too expensive and use too much power for smaller industrial applications. This makes their use limited. To counter this, ROHM has just announced a new reference design for power supply systems called the REF67004. It makes systems simpler and more efficient by being able to manage two popular power converter types using a single LogiCoA™ MCU.
By using a critical conduction mode PFC (Power Factor Correction), REF67004 boosts the AC input from the wall. It then processes it through a Quasi-Resonant Flyback converter and outputs a steady 24-volt DC power supply. This is a solution that combines the best of both analog and digital power control methods. On its own, the system can adjust for small differences in electronic components, allowing for very precise voltage control and even better protection against electrical overloads. Engineers can make use of smaller, less expensive components and create smaller circuit boards using this, effectively reducing overall costs.
The MCU keeps detailed records of its performance. This can help engineers quickly figure out what went wrong in the event that the power supply fails. Moving forward, ROHM plans to release more reference designs like this to help customers build power supply systems more easily. Evaluation board for the reference design LogiCoA003-EVK-001 is available now and is priced at $482.21 per unit on Mouser.
