General description

The NXF6501-Q100 is a specialized push-pull

transformer driver that is designed to deliver low noise

and low EMI for isolated power supplies in small form

factors. This driver is capable of driving low-profile,

center-tapped transformers from a 2.25 V to 5 V DC

power supply, while achieving ultra-low noise and

EMI through the use of slew rate control and Spread

Spectrum Clocking (SSC).

The NXF6501-Q100 comprises an oscillator and a

gate drive circuit that produces complementary output

signals to drive ground-referenced N-channel power

switches. To ensure start-up under heavy loads, the

device includes two 1.2 A power-MOSFET switches.

The NXF6501-Q100 also features internal protection

features such as current limiting, under-voltage

lockout, thermal shutdown, and break-before-make

circuitry, ensuring the device operates within safe

limits. The device also includes a soft-start feature that

prevents high inrush current during power-up with large

load capacitors.

The NXF6501-Q100 has a 440 kHz internal oscillator

for applications that require higher efficiency and

smaller transformer. The NXF6501-Q100 is available in

a small 5 pin SOT8098-1 package and is characterized

for operation within a temperature range of -55 °C to

125 °C.

This product has been qualified to the Automotive

Electronics Council (AEC) standard Q100 (Grade 1)

and is suitable for use in automotive applications.

Features and benefits

• Automotive product qualification in accordance with

AEC-Q100 (Grade 1)

• Specified from -55 °C to +125 °C

• Push-pull driver for transformers

• Wide input voltage range: 2.25 V to 5.5 V

• High output drive: 1.2 A at 5 V supply

• Low RON 0.2 Ω maximum at 5 V supply

• Optimized for low EMI

• Spread Spectrum Clocking (SSC)

• Internal switching frequency: 440 kHz

• Slew-rate control

• 1.7 A current limit

• Thermal shutdown

• Small 5 pin SOT8098-1 package

• Soft-start to reduce In-rush current

• ESD protection:

• HBM: ANSI/ESDA/JEDEC JS-001 class 3A

exceeds 6000 V

• CDM

Applications

• Isolated power supply for CAN, RS-485, RS-422,

RS-232, SPI, I²C, low-power LAN

• Low-noise isolated USB supplies

• Process control

• Telecom supplies

• Radio supplies

• Distributed supplies

• Medical instruments

• Precision instruments

• Low-noise filament supplies

• Isolated power supplies for automotive (AEC-Q100)

• Traction inverter and motor control

• DC-DC converter

• Battery management system

• On-board charger