Nexperia NXF6505A

Description

The NXF6505A/B-Q100 is a specialized push-pull transformer driver that is designed 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 5.5 V DC power supply, while achieving ultra-low noise and EMI using slew rate control and Spread Spectrum Clocking (SSC).The NXF6505A/B-Q100 features internal protection features such as current limiting, undervoltage 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.The NXF6505A/B-Q100 is constructed using an oscillator and a gate drive circuit that produces complementary output signals to drive ground-referenced N-channel power switches. These two complementary 1.2 A Power-MOSFET switches can be used to provide >6 W power. The 440 kHz internal oscillator is for applications that require higher efficiency and smaller transformers. 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, optimized for low EMI:
• Slew-rate control output
• Spread Spectrum Clocking (SSC)
• 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
• Internal switching frequency:
• for NXF6505A-Q100: 160 kHz
• for NXF6505B-Q100: 440 kHz
• Synchronization of multiple devices with external clock input
• 2.2 A current limit at 5 V
• Enable pin to put device in low shutdown current: <1 μA
• Thermal shutdown protection
• Soft-start start-up
• Packages
• Small 6 pin SOT8061-1 (SC-74; TSOP-6) package
• Small 6 pin SOT8120-1 (LSOT6) package
• ESD protection:
• HBM: ANSI/ESDA/JEDEC JS-001 class 3A exceeds 6000 V
• CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1500 V
• Functional Safety-capable
• China +1 product option available (-Q100/G)

Typical applications

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

More information

• Datasheet
• IC product information