Powering the Next Generation of High-Density GaN Modules: Allegro MicroSystems + RAM Innovations
As power electronics designs continue to demand higher efficiency, smaller footprints, and greater reliability, engineers face a growing challenge: how to increase power density without compromising thermal performance or long-term system stability. Traditional approaches often force trade-offs between size, efficiency, and robustness – slowing innovation and limiting design flexibility.
To overcome these constraints, collaboration across the semiconductor ecosystem has become essential. The partnership between Allegro MicroSystems and RAM Innovations addresses this challenge by combining industry-leading isolated gate driver technology with advanced packaging solutions. Together, they enable higher power density, improved thermal performance, and more reliable system designs – helping engineers move beyond traditional limitations and accelerate next-generation power applications.
Advancing GaN with Power-Thru™ and Embedded Die Packaging (EDP)
To unlock the full potential of GaN, engineers must overcome one of the most persistent barriers in power design: parasitics. As switching speeds increase, even small amounts of loop inductance can introduce voltage ringing, overshoot, and thermal inefficiencies, which limits performance and reliability.
RAM Innovations addresses this challenge by combining its advanced Embedded Die Packaging (EDP) approach with Allegro’s Power-Thru AHV85110 self-powered gate driver. Together, they enable a new class of high-performance GaN power modules, including 100V and 650V half-bridge solutions capable of switching at frequencies up to 1MHz. This reaches the range required for next-generation power conversion.
At the core of this innovation is a fundamental shift in how parasitics are managed. By embedding the die directly within the package, RAM’s EDP technology reduces loop inductance from traditional nanohenry levels down to the picohenry range. This dramatic reduction minimizes voltage ringing at the source and enables faster, cleaner switching behavior without sacrificing stability.
The result is not just incremental improvement, but a step change in performance. Systems can achieve ultrafast switching speeds in the single-digit nanosecond range while maintaining signal integrity. At the same time, reduced switching losses and optimized thermal paths help lower operating temperatures, allowing designers to push closer to the full voltage and current capabilities of the GaN die. This tighter integration also improves overall system robustness by mitigating common failure points associated with high dv/dt noise.
Simplifying Design with the AHV85110 Integrated Gate Driver
Allegro’s AHV85110 is a game-changer for high-side/low-side applications. It integrates isolated gate drive power supply and signal transmission into a single, compact package, eliminating the need for a bulky external isolated bias supply.
This integration delivers significant system-level advantages:
- 50% Reduction in Board Space: Reclaiming critical real estate for power-dense designs.
- Simplified Layout: Reducing the complexity of high-frequency PCB routing and minimizing EMI concerns.
- BOM Optimization: Significantly reducing the need for external components, simplifying the supply chain.
- Accelerated Validation: Faster development cycles through a pre-integrated, "plug-and-play" isolated driving solution.
By removing the design friction associated with traditional isolated gate drivers, engineers can pivot their focus from troubleshooting power supplies to perfecting their core system innovations.
Accelerating Innovation Through Collaboration
The collaboration between Allegro and RAM Innovations has streamlined the prototyping phase for high-density modules. By consolidating the gate driver circuitry into a single Allegro component, RAM’s engineering team has successfully focused on advancing their core expertise in embedded die technology.
Measurable Outcomes of the Partnership:
- 10x–100x reduction in parasitic inductance.
- Clean switching waveforms with minimal to no switch-node ringing.
- Up to 50% smaller total module footprint.
- Hermetic-like reliability via fully embedded and encapsulated gate circuitry.
Partner Perspective
"The AHV85110 has allowed us to focus our design efforts on maximizing the benefits of embedded GaN and SiC die. By integrating the gate driver into a single component, we’ve reduced development time and complexity – ultimately accelerating our time-to-market for these high-density solutions." – Peter Green, CTO & General Manager of RAM Innovations
Driving the Future of Power
Together, Allegro MicroSystems and RAM Innovations are enabling more compact, efficient, and reliable power solutions for the most demanding automotive and industrial applications. This partnership proves that when advanced semiconductor technology meets innovative packaging, we don't just improve specs – we redefine what’s possible in power design.
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