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Analog Devices Ltd

Analog Devices Ltd

Analog Devices, Inc. operates at the centre of the modern digital economy, converting real-world phenomena into actionable insight with its comprehensive suite of analogue and mixed signal, power management, radio frequency (RF), and digital and sensor technologies. ADI serves 125,000 customers worldwide with more than 75,000 products in the industrial, communications, automotive, and consumer markets. ADI is headquartered in Wilmington, MA. Visit www.analog.com. Both Linear Technology and Maxim Integrated are now part of Analog Devices.

Analog Devices provide efficient solutions for power management and power conversion applications in the automotive, telecommunications, industrial, medical, computing, military and high-end consumer markets using high-performance analogue ICs. Our power ICs can provide unrivalled power densities and software design simulation tools to provide both fast and accurate power module and power supply designs.

Products for power management include: switching regulators, linear regulators (LDO), µModule regulators, PMIC & Multifunction, inductorless (charge pump) DC/DC converters, LED driver ICs, power control, battery management,  current source, system supervisor, hot-swap controllers,  monitor and control, energy harvesting, super capacitor chargers and power management evaluation kits.

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New Product Highlight – LT8418

New Product Highlight – LT8418

29 February 2024

Analog Devices’ GaN Driver Enables Robust and Reliable Control of GaN FETs

 

Product Overview

Analog Devices, Inc. (ADI) now offers a 100V half-bridge GaN driver that simplifies the implementation of GaN FETs, proving robust gate control, high frequency switching, and increased system efficiency. Integrating top and bottom driver stages, driver logic control, and protections, the new LT8418 can be configured into synchronous half-bridge, full-bridge topologies, or buck, boost, and buck-boost topologies. The device provides strong current sourcing/sinking capability with 0.6Ω pull-up and 0.2Ω pull-down resistance for driving a variety of GaN FETs. It also integrates a smart integrated bootstrap switch to generate a balanced bootstrap voltage from VCC with a minimum dropout voltage.

 

The LT8418 delivers split gate drivers to adjust the turn-on and turn-off slew rates of GaN FETs to suppress ringing and optimise EMI performance. All driver inputs and outputs have default low-state to prevent GaN FETs from false turn-on. The pulsed width modulation inputs of the LT8418, INT and INB, are independent and TTL logic compatible for precise control. The LT8418 performs with a fast propagation delay of 10ns and maintains a delay matching of 1.5ns between the top and bottom channels, making it suitable for high-frequency DC-DC converters, motor drivers, and class-D audio amplifiers. In addition, the LT8418 employs the WLCSP package to minimise parasitic inductance, enabling its wide use in high-performance and high-power density applications.

 

Product Specifications

  • Split 0.6Ω pull-up and 0.2Ω pull-down gate drivers for adjustable turn on/off behaviour
  • 4A peak source, 8A peak sink current capability
  • Lower propagation delay: 10ns typical
  • Propagation delay matching: 1.5ns typical
  • High dv/dt immune up to 50V/ns
  • Under-Voltage (VCC & BST) and Over-Voltage (VCC) lockout protections
  • Smart integrated bootstrap switch will regulate the HS gate drive voltage to operate within the SOA of the GaN FETs

 

Pricing and Availability

Product: LT8418ACBZ-R7

Full Production: NOW

Price Each Per 1,000: $1.68

Packaging: 12-Ball Wafer Level Chip Scale Package (WLCSP) (1.67mm x 1.67mm)

 

Additional Information

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