Two controllers simplify USB-C PD3.0 designs

February 27, 2020 //By Nick Flaherty
The FAN6390 adaptive charging controller and NCP12601 multi-mode synchronous flyback controller from ON Semiconductor simplify integration of the USB-C PD3.0 programmable power supply (PPS) standard
The FAN6390 adaptive charging controller and NCP12601 multi-mode synchronous flyback controller from ON Semiconductor simplify integration of the USB-C PD3.0 programmable power supply (PPS) standard

ON Semiconductor has launched two power controllers that are fully compliant with the latest USB-C PD3.0 programmable power standard.

The FAN6390 adaptive charging controller simplifies integration of the USB-C PD3.0 programmable power supply (PPS) standard into systems while the NCP12601 is a highly integrated multi-mode synchronous flyback controller for rugged, high-performance, offline power supplies such as adapters. The two controllers simplify USB-C PD 3.0 based power supply designs through more integration that gives higher reliaiblity and enable higher power density design for applications such as smartphone chargers, AC-DC power adapters and auxiliary or housekeeping power supplies.

ON Semi says this is the first integrated synchronous rectifier and autonomous controller product for USB-C PD 3.0 with PPS secondary side system design, and the FAN6390 is the first in a family of such controllers.

“The trend of higher capacity batteries requiring the same or faster charging times is accelerating the adoption of USB-C PD. The family of FAN6390 products enables an impressive level of integration which will enhance industrial design and improve power density for travel adapters,” said Scott Haddow, Senior Director and General Manager.  The controller architecture uses a state machine for all the features required for PD 3.0 and PPS functionality to simplify the system design by using trim optioning.

The PPS constant current / constant voltage (CC/CV) requirements are addressed through an internal, high resolution 10-bit DAC that is fully compliant with the USB-C PD 3.0 requirements.

The NCP12601 variable frequency controller combines multi-mode continuous current mode or discontinuous current mode (CCM / DCM) operation with valley switching to suit a wide variety of load conditions. This approach provides higher efficiency compared to traditional fixed frequency PWM controllers. The addition of valley lockout and a proprietary quiet skip feature enhance the noise performance significantly while frequency jitter reduces the EMI signature.

Meeting the USB-C PD 3.0 standard can be challenging for designers and the NCP12601 includes a unique auto-tune and dual-level overcurrent protection (OCP) that enables


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