Sensorless motor driver controller on display at PCIM

One of the demonstrations will include the industry’s first current-mode LLC controller, the NCP1399, highlighting the safety features and benefits inherent to a current-mode control approach. The power supply reference design will incorporate the NCP1399 along with ON Semiconductor’s NCP4810 X2 capacitor discharger, NCP1602 PFC controller, and NCP4305 synchronous rectification controller. This system solution is predominantly aimed at power supplies for all-in-one computers and large LED TVs, as well as ultra-high density power adapters. It is capable of achieving markedly higher performance, lower standby power and higher power conversion efficiency levels than would be possible using competitive devices. The current-mode control architecture of the NCP1399 is the heart of the power supply reference design bringing built-in protection features, faster transient response and light load efficiency enhancements. The NCP4305 provides improved efficiency with a large 8A driver and built-in light load detection.

A two-stage converter demonstrating the latest high-efficiency results obtainable with GaN will also be featured at PCIM. This 240W supply achieves 95% peak efficiency with the NCP1397 LLC controller, NCP1654 PFC controller, and TPH3202PS or NTP8G202N GaN transistor switching devices. The board utilises GaN HEMTs in both the PFC stage and in the primary side of the LLC stage.

The motor driver demonstration will showcase a next-gen softwareless automotive motor driver solution, LV8907. On-chip intelligent sensorless commutation logic enables the solution to drive a BLDC motor without any position sensor, thereby reducing its cost and footprint. This softwareless solution, which features on-chip configuration registers, can be customised for a wide range of motor and load combinations using an easy-to-use and free GUI utility from ON Semiconductor. The pre-loaded configuration registers allows the LV8907 to drive the motor in a stand-alone mode without an external system controller. Featuring an integrated LIN transceiver, the solution can also deliver a LIN-based advanced motor drive solution using a small and low cost companion controller that is required only for LIN management tasks.

At PCIM, ON Semiconductor will also introduce a range of 600V IPMs for three-phase motors for current requirements from 3 to 15A. The STK5C4U332J-E and the STK5Q4U3xxJ-E are designed for applications in the consumer and light industrial area.

By applying DIPS/DIPS3 packages with dimensions of 18.2x29.6mm, power output can be scaled to support changing requirements in the application. The outstanding heat dissipation characteristics of the modules, in combination with the featured low loss IGBT, enables highly efficient operation at large power density. The integrated protection functions guarantee for safe, reliable and long term operation. Design support tools, including online loss simulation and evaluation boards, enable the designer to quickly and cost effectively realise the solution for his application.