Nexperia Introduces AEC-Q100 Qualified Transformer Drivers for Automotive and Industrial Applications

Nexperia has launched the NXF6501-Q100, NXF6505A-Q100, and NXF6505B-Q100, a new series of AEC-Q100 qualified push-pull transformer drivers designed for creating small, low-noise, and low-EMI isolated power supplies. These drivers are perfect for a variety of automotive applications, such as traction inverters, motor control, DC-DC converters, battery management systems, and on-board chargers for electric vehicles (EVs). Additionally, these transformer drivers are well-suited for industrial uses, including telecommunications, medical devices, instrumentation, industrial automation, solar inverters, energy meters, and programmable logic controllers (PLCs).

The NXF650x(A/B)-Q100 series is capable of driving low-profile, center-tapped transformers from a 2.25V to 5.5V power supply with high output current (up to 1.2 A at 5 V) and delivers high efficiency, reaching up to 90%. To support compact designs, these devices include an internal oscillator running at 440 kHz (for NXF6501 and NXF6505B) or 160 kHz (for NXF6505A) and feature a gate drive circuit that generates complementary output signals to power the internal ground-referenced n-channel power switches. Alternatively, users can supply an external clock signal to the NXF6505A and NXF6505B models for more precise control of switching harmonics or to synchronize multiple devices in this series. To further reduce noise and electromagnetic interference (EMI), the series uses slew rate control and spread-spectrum clocking (SSC).

Safety and protection are key features of the NXF650x(A/B)-Q100 series, which includes over-current protection (set at 1.7 A) with a hiccup mode, under-voltage lockout, thermal shutdown, and break-before-make circuitry to ensure reliable operation. The series also has a soft-start (~5 ms) feature to avoid inrush currents during startup when large load capacitors are present. Additionally, the fail-safe inputs prevent back-powering the local supply, removing the need for power sequence management.

Available in compact industry-standard footprints, these devices come in 5-pin SOT8098 (TSOT5) and 6-pin SOT8061 (TSOT6) packages. They are built to operate safely in ambient temperatures ranging from -55°C to 125°C. For more information about Nexperia’s transformer drivers, visit the company’s website: Nexperia Transformer Drivers.