The NXF6505A/B-Q100is 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-Q100featu
res 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-Q100is 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-Q100i
s 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 and benefits
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)
Applications
Isolated power supply for automotive and industrial applications including:
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
Motor control
Isolated power supplies for automotive (AEC-Q100)
Traction inverter
DC-DC converter
Battery management system
On-board charger
The NXF6505A/B-Q100is 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-Q100features 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-Q100is 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-Q100is 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 and benefits
- 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)
Applications
- Isolated power supply for automotive and industrial applications including:
- 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
- Motor control
- Isolated power supplies for automotive (AEC-Q100)
- Traction inverter
- DC-DC converter
- Battery management system
- On-board charger
