Infineon DEMO5QR2280AZ24W1TOBO1 AC/DC Primary/Secondary Side Controller - Flyback The DEMO_5QR2280AZ_24W1 demostration board operates under a wide range input developed with offline SMPS application in mind. It features the new ICE5QR2280AZ PWM quasi-resoant flyback CoolSET with 800V integrated MOSFET in DIP-7 package.