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GaN / LATEST NEWS / WBG3 Min Read
Navitas Semiconductor announced that its CRPS185 3,200 W “Titanium Plus” server reference design not only surpasses the stringent 80Plus Titanium efficiency requirements, but also effectively satisfies the increasing power demands of AI data center power.
The rapid development and deployment of artificial intelligence (AI) including OpenAI’s ChatGPT, Microsoft’s Bing with AI, and Google’s Bard, has penetrated all aspects of people’s lives. New power-hungry AI processors like NVIDIA’s DGX GH200 ‘Grace Hopper’ demand up to 1,600 W each, are driving power-per-rack specifications from 30-40 kW up to 100 kW per cabinet. Meanwhile, with the global focus on energy conservation and emission reduction, as well as the latest European regulations, server power supplies must exceed the 80Plus ‘Titanium’ efficiency specification.
Navitas’ reference designs dramatically accelerate customer developments, minimize time-to-market, and set new industry benchmarks in energy efficiency, power density and system cost, enabled by GaNFast power ICs. These system platforms include complete design collateral with fully-tested hardware, embedded software, schematics, bill-of-materials, layout, simulation and hardware test results.
In this case, the ‘Common Redundant Power Supply’ (CRPS) form-factor specification was defined by the hyperscale Open Compute Project, including Facebook, Intel, Google, Microsoft, and Dell. Now, Navitas’ CRPS185 platform delivers a full 3,200 W of power in only 1U (40 mm) x 73.5mm x 185 mm (544 cc), achieving 5.9 W/cc, or almost 100 W/in3 power density. This is a 40% size reduction vs, the equivalent legacy silicon approach and easily exceeds the Titanium efficiency standard, reaching over 96.5% at 30% load, and over 96% stretching from 20% to 60% load, creating a ‘Titanium Plus’ benchmark, critical for data center operating models.
The CRPS185 uses the latest circuit designs including an interleaved CCM totem-pole PFC with full-bridge LLC. The critical components are Navitas’ new 650V GaNFast power ICs, with robust, high-speed integrated GaN drive to address the sensitivity and fragility issues associated with discrete GaN chips. Additionally, GaNFast power ICs offer extremely low switching losses, with a transient-voltage capability up to 800 V, and other high-speed advantages such as low gate charge (Qg), output capacitance (COSS) and no reverse-recovery loss (Qrr). As high-speed switching reduces the size, weight and cost of passive components in a power supply, Navitas estimates that GaNFast power ICs save 5% of the LLC-stage system material cost, plus $64 per power supply in electricity over 3 years.
Compared to traditional ‘Titanium’ solutions, the Navitas CRPS185 3,200 W ‘Titanium Plus’ design running at a typical 30% load can reduce electricity consumption by 757 kWh, and decrease carbon dioxide emissions by 755 kg over 3 years. This reduction is equivalent to saving 303 kg of coal. Not only does it help data center clients achieve cost savings and efficiency improvements, but it also contributes to the environmental goals of energy conservation and emission reduction.
In addition to data center servers, this solution can also be widely used in applications such as switch/router power supplies, communications, and other computing applications.
“The popularity of AI applications like ChatGPT is just the beginning. As data center rack power increases by 2x-3x, up to 100 kW, delivering more power in a smaller space is key,” said Charles Zha, VP and GM of Navitas China. “We invite power designers and system architects to partner with Navitas and discover how a complete roadmap of high efficiency, high power density designs can cost-effectively, and sustainably accelerate their AI server upgrades.”
Original – Navitas Semiconductor
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Navitas Semiconductor announced the first in a series of strategic manufacturing investments, to increase control, reduce costs and enhance revenue capacity for its GeneSiC silicon carbide (SiC) power semiconductors.
An initial $20 million investment enables a three-reactor SiC epi-growth facility at the company’s Torrance, CA headquarters. Adding a SiC epitaxial (or “epi”) layer onto a raw SiC wafer is the first step in manufacturing individual SiC power devices. The first AIXTRON G10-SiC epitaxy reactor, with 6” and 8” wafer capability, is expected to be fully qualified and in production in 2024. Navitas views the epi-growth services to be provided by its new facility as a critical process step that could support up to an additional $200 million in annual production. The company expects to continue the use of third-party vendors for additional epi-growth, wafer fabrication and assembly operations.
“We are proud that an important technology innovator such as Navitas chose our new G10-SiC to further accelerate the adoption of SiC in the growing market for energy efficient power devices. This is especially significant as AIXTRON and Navitas are both firm believers and pioneers in the unstoppable advance of GaN and SiC over legacy silicon. It is through partnerships like ours, where highly innovative companies work together, that this important transition can be realized,” says Dr. Felix Grawert, CEO and President of AIXTRON SE.
“Adding a high-quality SiC epi-layer onto a raw SiC wafer is a critical process step prior to individual device manufacturing, and adding the AIXTRON in-house epi capability to existing subcontract process flows expands available capacity, lowers finished wafer cost, increases quality and reduces cycle times”, said Dan Kinzer, Navitas COO / CTO and co-founder. “The development and manufacturing business partnership with Aixtron includes ongoing technical and co-development support.”
Navitas’ investment in internal epi capacity is one of several initiatives in support of the company’s recently-announced $760M customer pipeline of estimated potential future business, based on expressed customer interest for qualified programs. While the conversion of this pipeline into orders or shipments depends on many factors in addition to possessing available capacity, the company expects its epi capacity expansion will provide a favorable return on investment under most anticipated planning scenarios.
Navitas recently completed an $80 million follow-on common stock offering and plans to use proceeds from the offering for strategic manufacturing investments, among other possible uses, including working capital and general corporate purposes.
Original – Navitas Semiconductor