ON Semiconductor introduces innovative USB-C PD 3.0 controller

     ON Semiconductor, driving energy efficient innovation, has introduced a pair of new devices that are fully compliant with the USB-C PD 3.0 standard. The FAN6390 Adaptive charging controller makes the USB-C PD 3.0 Programmable Power Supply (PPS) standard easy to integrate into the system, while the NCP12601 is a highly integrated multi-mode flyback controller for robust high-performance offline power supplies such as adapters. The new device greatly simplifies USB-C PD 3.0-based power supply design, provides higher integration and reliability, and enables higher power density design for a variety of electronic device applications, such as smartphone chargers, AC-DC power adapters, and auxiliary power/internal power management.

     Continuing its leadership in power management and USB-C PD solutions, ON Semiconductor has finally introduced this first integrated synchronous rectifier and autonomous controller product to simplify secondary system design. The FAN6390 is the first device in ON Semiconductor's USB-C PD 3.0 controller family to integrate PPS. Scott Haddow, Senior director and general manager at ON Semiconductor, said: "The trend towards larger capacity batteries with the same or faster charging times is accelerating the adoption of USB-C PD. The level of integration achieved by the FAN6390 product family is compelling and will enhance industry design and increase the power density of travel adapters." The optimized structure provides a state machine-based operation mode that implements all the functions required for PD 3.0 and PPS functions, thus simplifying the design and manufacture of the final product. The FAN6390's industry-leading synchronous rectifier FET drive technology delivers high energy efficiency. The FAN6390's fine-tuning options also provide designers with flexibility and programmability.

     The built-in high-resolution 10-bit analog-to-digital converter (DAC) is fully compliant with the USB-C PD 3.0 requirements and precisely addresses the PPS constant current/constant voltage (CC/CV) requirements. ON Semiconductor provides fully validated reference designs to further help designers simplify integration efforts. The NCP12601 variable frequency controller adds to ON Semiconductor's extensive USB-C PD 3.0 lineup, which combines multi-mode continuous current mode or discontinuous current mode (CCM/DCM) with bottom switch to adapt to a variety of load conditions. This method is more energy efficient than traditional fixed frequency pulse width modulation (PWM) controllers. The addition of valley bottom locking and proprietary silent jump period features significantly improves noise performance to market-leading levels, while frequency jitter provides improved electromagnetic interference (EMI) characteristics.

     Compliance with the USB-C PD 3.0 standard can be a challenge for designers, and the NCP12601 includes unique automatic tuning and two-stage overcurrent protection (OCP) to implement the OCP functionality needed to comply with the standard. At the same time, the low-loss VCC bias enables a wide output voltage range without the need for additional external circuits or complex transformer designs.

     Adjustable overpower protection provides slope compensation to ensure smooth output power levels after the addition of a single external resistor, regardless of the operating input voltage. Other protection features include latch short circuit protection that automatically recovers or is compatible with pre-short circuits, and overtemperature protection (OTP) that can be used with a dedicated pin or combined with a general purpose CS pin.