Nexperia NXF6505B-Q100

Description

The NXF6505A/B-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 NXF6505A/B-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. Additionally, the switching clock can be provided externally for precise placement of switcher harmonics or when operating with multiple transformer drivers.The NXF6505A/B-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 NXF6505A-Q100 includes a 170 kHz internal oscillator for applications that need to minimize emissions, while the NXF6505B-Q100 has a 440 kHz internal oscillator for applications that require higher efficiency and smaller transformer. The NXF6505A/B-Q100 is available in a small 6 pin SOT8061-1 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

• 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:
• for NXF6505A-Q100: 170 kHz )
• for NXF6505B-Q100: 440 kHz )
• Synchronization of multiple devices with external clock input
• Slew-rate control
• 1.7 A current limit
• Enable pin to put device in low shutdown current: <1 μA
• Thermal shutdown
• Small 6 pin SOT8061-1 package
• Soft-start to reduce In-rush current
• ESD protection:
• HBM: ANSI/ESDA/JEDEC JS-001 class 3A exceeds 6000 V
• CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1500 V

Typical applications

• Low-noise filament supplies, Distributed supplies, Isolated power supply for CAN, RS-485, RS-422, RS-232, SPI, I²C, low-power LAN, Isolated power supplies for automotive (Q100)
• Battery management system, On-board charger, Traction inverter and motor control, DC-DC converter
• Precision instruments
• Process control
• Low-noise isolated USB supplies
• Telecom supplies, Radio supplies
• Medical instruments

More information

• IC product information