In response to the escalating demand for powerful yet compact USB-C power delivery (PD) chargers, Infineon Technologies AG has launched the EZ-PD PAG2, a sophisticated secondary-side controlled ZVS flyback converter chipset. Comprising the EZ-PD PAG2P and EZ-PD PAG2S, this innovative chipset integrates USB PD, a synchronous rectifier, and a PWM controller, addressing the need for efficient communication and isolation between primary and secondary sides.
The heart of this groundbreaking technology lies in the pulse-edge transformer (PET) CYPET121, facilitating seamless integration of the EZ-PD PAG2 chipset into USB-C adapters, chargers, and travel adapters. Supporting noncomplementary active-clamp flyback (NCP-ACF) and quasi-resonant flyback with zero voltage switching (QR-ZVS) topologies, the chipset boasts enhanced efficiency, making it an ideal solution for modern charging needs.
The EZ-PD PAG2 family caters to diverse applications, providing a versatile and efficient power delivery solution. With support for PD 3.1 standard power range (SPR), programmable power supply (PPS), and 28V extended power range (EPR), the chipset ensures fast and reliable charging. Its compatibility with BC v1.2, AFC, Apple charging, and QC5.0, coupled with universal AC line input support from 90 to 265 V AC, enhances its global usability.
Key features of the EZ-PD PAG2 family include programmable soft-start using an external ss capacitor, offering controlled power-ups and adaptability to different load conditions. Operating in discontinuous conduction mode (DCM), critical conduction mode (CrCM), continuous conduction mode (CCM), burst, and skip modes, the chipset accommodates various regional power sources and device types, ensuring efficient and flexible power management.
The EZ-PD PAG2 family encompasses four specialized products:
- EZ-PD PAG2S-AC: A secondary-side ACF controller with efficient energy recycling, incorporating USB-PD protocol functionality.
- EZ-PD PAG2S-QZ: A ZVS controller focusing on QR-ZVS flyback, featuring USB-PD protocol functionality.
- EZ-PD PAG2P: A primary HV startup controller with integrated functions for improved system performance, including high-voltage startup, PET receiver, gate drivers, fault protection, x-cap discharge, and V cc boost converter.
- EZ-PD PAG2S-PS: An integrated USB PD and synchronous-rectification (SR) controller, designed to be paired with third-party pulse-width-modulation (PWM) controllers. It boasts a shunt voltage regulator for constant voltage and current control via optocouplers, offering best-in-class SR performance with fast turn-on/off time and support for volt-second integration to prevent false SR activation.
Infineon’s EZ-PD PAG2 chipset marks a significant leap forward in meeting the surging demand for advanced USB-C power delivery chargers. With its cutting-edge features and adaptability, this chipset is poised to play a pivotal role in shaping the future of efficient and high-performance charging solutions.
