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Infineon launches next-generation flyback converter chipset


ZVS flyback converter chipset for advanced USB-C PD adapters and chargers

Infineon has released the EZ-PD PAG2, a secondary-side controlled ZVS flyback converter chipset. Comprising EZ-PD PAG2P and EZ-PD PAG2S, the chipset integrates USB PD, a synchronous rectifier, and a PWM controller.

According to the company, the chipset ensures efficient communication and isolation between primary and secondary sides using pulse-edge transformer (PET) CYPET121. The chipset supports innovative noncomplementary active-clamp flyback (NCP-ACF) and quasi-resonant flyback with zero voltage switching (QR-ZVS) topologies for enhanced efficiency. This makes it suitable for high-efficiency USB-C adapters, chargers, and travel adapters.

The EZ-PD PAG2 family offers PD 3.1 standard power range (SPR) with programmable power supply (PPS) and 28V extended power range (EPR) for fast, reliable charging. Suitable for a wide range of wattages, the chipset is compatible with BC v1.2, AFC, Apple charging and QC5.0, and it has universal AC line input support from 90 to 265 V AC.

Other features include programmable soft-start using an external ss capacitor, offering controlled power-ups and discontinuous conduction mode (DCM), critical conduction mode (CrCM) and continuous conduction mode (CCM), as well as burst and skip modes for different load conditions. This adaptability makes it suitable for different regional power sources and device types.

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