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Microchip 与 Navitas 800V 转 6V 参考设计：对 AI 服务器电源 BOM 的改变

Microchip 与 Navitas 将 GaN 功率级和 dsPIC33AK DSC 整合为面向 AI 机架的单一 800V 转 6V 参考设计，瞄准 Nvidia 的 Kyber 生态系统。

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TL;DR——三句话

  • Microchip and Navitas jointly released an 800V-to-6V AI server power reference design on 2026-10-06, folding two conversion stages into one (S1).
  • The reference board uses 16 Navitas GaN power devices and is about 20% thinner than a smartphone, enabling close placement to the GPU board (S1).
  • Microchip supplies the dsPIC33AK DSC for control and the TA100 security chip for secure boot and firmware authentication on the same board (S1).

摘自 key_takeaways （真实字段，最多 3 条）。事实与分析分别标注。

Microchip 与 Navitas 800V 转 6V 参考设计：对 AI 服务器电源 BOM 的改变 — Semiconductor News news briefEditorial cover for a Semiconductor News brief. Power motif; headline "Microchip 与 Navitas 800V 转 6V 参考设计：对 AI 服务器电源 BOM 的改变". Reported key numbers: 16. 1 cited source. Static cover (no animation).SEMICONDUCTOR NEWS · NEWS BRIEFMicrochip 与 Navitas 800V 转 6V 参考设计：对 AI服务器电源 BOM 的改变REPORTED KEY NUMBERS161 sourceXAIPART
Cover image generated from data already shown on this page: the category motif, the headline, and reported key numbers. No decorative illustration; no third-party image.

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Reported by THE ELEC on 2026-10-06. Summarized and analyzed by XAIPART Editorial.

What happened

Microchip Technology and Navitas Semiconductor unveiled a power-conversion reference design for artificial intelligence (AI) data centers on Oct. 6, combining two conversion stages into one to reduce losses compared with conventional 800V-to-50V-to-6V designs.S1 The 6V output is ultimately stepped down to less than 1V by a voltage regulator module (VRM) on the graphics processing unit (GPU) board.S1

The board uses 16 gallium nitride (GaN) power semiconductors from Navitas, exploiting GaN's faster switching and lower loss versus silicon to shrink magnetic and passive components.S1 The board profile is described by the source as about 20% thinner than a smartphone, letting it sit close to the GPU board.S1

Microchip contributes the dsPIC33AK digital signal controller (DSC) that runs the power-conversion control loop and the TA100 security chip, which handles secure boot and firmware authentication.S1 Navitas first showed the basic power architecture at Nvidia's GTC 2026 developer conference in March; the two companies are now jointly offering the board, software, and design documentation as a reference baseline for server and power-equipment makers.S1

The reference design aligns with Nvidia's 800V-to-the-rack ecosystem, and Nvidia expects that approach to gain wider adoption starting with shipments of its next-generation rack system, "Kyber," in 2027.S1

Key numbers
MetricReported valueSource
Conversion topology800V to 6V in one stage (vs. conventional 800V to 50V to 6V)[S1]
GaN devices per board16[S1]
VRM output (final stage on GPU board)Less than 1V[S1]
Board thickness vs. smartphoneAbout 20% thinner[S1]
Efficiency gain numberNot disclosed[S1]
Reference-design pricingNot disclosed[S1]

Background timeline

  1. - Navitas unveiled the basic power architecture of the board at Nvidia's GTC 2026 developer conference.S1
  2. - Microchip Technology and Navitas Semiconductor announced the joint 800V-to-6V reference design, adding Microchip's dsPIC33AK DSC and TA100 security chip.S1
  3. - Nvidia expects broader adoption of the 800V rack approach starting with shipments of its "Kyber" next-generation rack system.S1

XAIPART take

Technical impact

Folding 800V directly to 6V in a single GaN stage eliminates the intermediate 50V bus and its associated magnetics, bulk capacitance and protection devices, which simplifies PCB layout and shrinks the converter footprint to a board roughly 20% thinner than a smartphone. Running the control loop on a dsPIC33AK DSC gives designers a deterministic core for tight regulation of a high-step-down ratio, while the TA100 brings hardware root-of-trust for secure boot and firmware authentication - both increasingly required as AI accelerators move onto rack-level boards adjacent to a GPU.

Market impact

The reference design signals that 800V rack power is moving from Nvidia keynote slides into vendor-ready building blocks that ODMs and power-supply makers can copy. Server and PSU OEMs evaluating Kyber-class racks in 2027 should expect GaN-based 800V-to-6V stages to become a default reference; silicon-MOSFET 50V intermediate bus designs risk being displaced in new AI rack platforms. Component buyers should anticipate longer qualification cycles for traditional 50V power stages while 650V-rated GaN parts, DSC supply, and secure-boot silicon are pulled into AI server BOMs. XAIPART analysis

Action

Procurement teams should open dialogue with Microchip on dsPIC33AK and TA100 lead times and with Navitas on 650V GaN device allocation, locking in slots on the joint reference design's documentation list so the in-house power team can benchmark efficiency before committing to a Kyber platform. Design engineers should request the board, software, and design files package to evaluate thermal density, EMI, and the less-than-1V VRM interface on their target GPU board footprint now, rather than after Kyber shipments begin in 2027. XAIPART analysis

XAIPART Forecast

XAIPART expects that by 2027-12-31, at least three announced server or PSU platforms built around Nvidia's Kyber ecosystem will publicly cite Microchip's dsPIC33AK or Navitas GaN parts as their 800V-to-6V conversion stage; if no public platform design win for dsPIC33AK or the joint reference design is disclosed by that date, this forecast is wrong. XAIPART analysis

Facts are as reported by the cited source. The design-in, sourcing and forward-looking statements above are XAIPART's analysis, not the source's claims. Quantitative efficiency improvement, reference-design pricing, and GaN device part numbers were not disclosed in the source; the Nvidia Kyber 2027 shipment statement is currently a single-source expectation from Nvidia as reported by THE ELEC and should be treated as unconfirmed until Nvidia publishes shipping guidance.

Corrections: none at publication. This brief will be updated with a timestamp if the source corrects its report.

Dated developments, extracted from this page's timeline (curated milestones = hollow markers).
Timeline of dated developmentsDated entries: 2026-03-01 2026 - Navitas unveiled the basic …; 2026-10-06 - Microchip Technology and Navitas…; 2027-01-01 - Nvidia expects broader adoption ….2026-03-012026 - Navitas unveiled the basic …2026-10-06- Microchip Technology and Navitas…2027-01-01- Nvidia expects broader adoption …

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关注要点

可证伪预测——阈值、时间窗口和当前状态。被推翻的预测仍保留可见。
论断阈值发布方状态
XAIPART expects that by 2027-12-31, at least three announced server or PSU platforms built around Nvidia's Kyber ecosystem will publicly cite Microchip's dsPIC33AK or Navitas GaN parts as their 800V-to-6V conversion s... no public platform design win for dsPIC33AK or the joint reference design is disclosed by that date Pending

被证明错误的预测仍保留可见并加以标注。我们不会删除它们。

竞争格局

  • 22110 个在售商品（XAIPART 此分类）
  • 92 收录制造商
  • 62 家制造商（过去 30 天内出现在我们的新闻存档中）

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受影响的料号

目录中无匹配。 此事件未映射到 XAIPART 当前上架的任何料号。我们不推断匹配，也不显示占位列表。

各维度成本压力

Source: FRED · Generated · reference output z and composite are algorithm outputs, not a fetch snapshot

Cost pressure by dimension — composite stateDiverging bars for three dimensions around a zero midpoint. Input Cost has no reading; Supply Demand z -1.4711, notable; Fx Energy z 0.4541, neutral. Composite index -7.6, band neutral.0投入成本no reading供需z −1.4711 · notable46 d汇率与能源z +0.4541 · neutral6 dcomposite −7.6 · neutral−100 · −40 · −15 · 0 · +15 · +40 · +100
Underlying values — copyable for verification.
DimensionFRED series IDUnitLagAs of
投入成本PCOPPUSDM, PALUMUSDM, PNICKUSDMUSD/mt96 d
供需PCU334413334413, IPG3344Sindex(1982=100) / index(2017=100)46 d
汇率与能源DEXCHUS, DCOILBRENTEU, DHHNGSPrate / USD/bbl / USD/MMBtu6 d

No free authoritative interface for: gold · silver · rare earth · polysilicon · lithium carbonate · market share — listed rather than approximated.

本文如何生成

过程证据——抓取、来源可靠性检查、模型与校验
本简报的审计记录
Source fetched THE ELEC · www.thelec.net · 2,235 chars
Source sanity (S1) ok — passed before any model call (no s1_ block recorded)
Model / prompt MiniMax-M3 · prompt Blog Agent - News Summary (v2.8-final) · 6,579 tokens · 32.3s · run completed
Gate verdict hold · 6/6 applicable checks passed · spec v2.9 · C10 ratio 0.045601 · C10 rounds 0
Time contract 3 <time datetime> values in this brief — 0 violations (+08:00 or date-only)

上述每一行均由流水线生成，而非人工撰写。

编辑评分

确定性校验结果——纯 PHP 实现，判定过程不涉及模型
校验评分明细 6 项适用检查， 6项通过： 100 %. Hold items: C13 (falsifiable forecast) — sent to human review. Gate spec: v2.9 (S0 + S1 + C1–C20) · Source affinity (C20): 0.7257. 适用检查已通过 6 / 6 = 100% · 判定： hold Hold items: C13 (falsifiable forecast) — sent to human review Gate spec: v2.9 (S0 + S1 + C1–C20) · Source affinity (C20): 0.7257 是否发布由校验决定。独立审计评分仅供参考。

独立审计（仅供参考，不影响发布）： 52/100 · 等级 C — 详情

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来源

  1. Microchip, Navitas Unveil 800V Power Reference Design for AI Servers — https://www.thelec.net/news/articleView.html?idxno=14424 · rss · 访问于

事实标注为 S1/S2，并可追溯至所链接的来源。标注为 分析 的内容是 XAIPART 自身的推理，与报道的事实分开呈现。来源链接会被访问核实，而非 nofollow ——署名是有意为之。