ROHM’s New Ultra-High-Speed Gate Driver IC: Maximizing the Performance of GaN Devices

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Class-leading* unit of nanoseconds gate drive contributes to greater energy savings and miniaturization in LiDAR applications and data centers

ROHM has developed a gate driver IC - the BD2311NVX-LB. It is optimized for GaN devices and achieves gate drive speeds on the order of nanoseconds (ns) - ideal for high-speed GaN switching. This was facilitated through a deep understanding of GaN technology and the continuing pursuit of gate driver performance. The result: fast switching with a minimum gate input pulse width of 1.25ns that contributes to smaller, more energy efficient, higher performance applications.

In recent years, improving power conversion efficiency while reducing the size of power supply units in server systems have become important factors as the number of IoT devices continues to grow. This requires further advancements in the power device sector. At the same time, LiDAR, which is used not only for autonomous driving but also for monitoring industrial equipment and social infrastructure, demands high-speed pulsed laser light to further increase recognition accuracy.

As these applications require the use of high-speed switching devices, in conjunction with the release of GaN devices, ROHM developed an ultra-high-speed gate driver IC that maximizes GaN performance. Going forward, ROHM continues to release smaller WLCSP products to support greater miniaturization.

As GaN devices are sensitive towards gate input overvoltage, ROHM has developed a unique method to suppress the gate voltage overshoots and has implemented it into this driver. On top, the optimum GaN device can be selected by adjusting the gate resistance based on application requirements. ROHM also offers a lineup of GaN devices under the EcoGaN™ name - contributing to a sustainable society through power solutions when combined with gate driver ICs that maximize their performance. The gate driver BD2311NVX-LB with the unique gate overvoltage suppression feature - when used with ROHM's EcoGaN™ products - further simplifies the design and enhances application reliability.

Application Examples

  • LiDAR drive circuits (i.e. industrial equipment, infrastructure monitoring)
  • DC-DC converter circuits in data centers, base stations etc.
  • Wireless charging for portable devices
  • Class-D audio Amplifiers and more


Online Sales Information
Sales Launch Date: September 2023
Pricing: $6.0/unit (samples, excluding tax)
Online Distributors: DigiKey, Mouser and Farnell
The IC will be offered at other online distributors as it becomes available.
Applicable Part No: BD2311NVX-LB
 

Reference Designs
Reference designs for LiDAR incorporating these new products together with ROHM’s 150V EcoGaN™ and high-power laser diodes are now available on ROHM’s website.
These designs can be used to reduce development load.
Reference Design Part Nos:
REFLD002-1 (Square Wave Circuit),
REFLD002-2 (Resonant Circuit)

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