Power MOSFETs for AI-server power
From the 800VDC rack bus through the 48V intermediate bus to battery backup, every power stage switches through MOSFETs. inergy covers the rack with 650V – 1200V SiC for PFC and HVDC, 60V – 100V SGT for 48V conversion and battery backup, and dual-N and N+P drivers for 12V and 48V cooling fans.
Pick the socket. Get the shortlist. Open any part in the full selection guide.
Part numbers with a dashed underline open that device in the selection guide, with the full parameter sheet and datasheet download.
AI-server power portfolio
Every device the AI-server design guide calls out, from the PSU to the fans, in one sortable table. Parts already in the selection guide carry the guide's released specifications and link straight to it; new SiC and upcoming parts show preliminary values — ask us for data.
Tap a row for the full specs, where the part is used, and the guide link.
| Part number | Type | VDS | Rds(on) max | ID @25°C | Qg | Package | Status | Add to shortlist |
|---|
Specifications for linked parts are from inergy MOSFET Selection Guide v2026.Q3.0. Rds(on) is the maximum at VGS = 10V unless marked @4.5V (logic-level parts); dual and N+P parts show N / P or Q1 / Q2 values. "New" parts are not yet in the online guide: SiC Rds(on) marked * is the nominal class from the part code, and HVDC values are typical — confirm against the datasheet.
What the portfolio covers
One supplier, whole rack
Small-signal SOT-23 for cell balancing through 1200V SiC for 800VDC distribution — one qualification, one supply relationship.
Battery-backup conduction
80V TOLL down to 0.75 mΩ for paralleled BBU charge and discharge switches, and sub-1 mΩ 60V parts for the 48 → 12V output switches.
SiC for the front end
TOLL SiC MOSFETs for totem-pole PFC and LLC primaries, and 750V / 1200V devices for HVDC racks, SST and solid-state breakers.
Where our silicon sits
Each card is one stage of the power chain. Pick a socket to filter the portfolio to the devices that fit it.
48V reference table
Sizing shortcuts from the application team. Every part number opens in the selection guide.
48 → 12V HSC switch stress
| Device | Voltage stress | Current stress | inergy class |
|---|
With N1 = N2. The Lr–Cr resonance gives zero-current turn-on, so conduction loss dominates — choose by Rds(on).
Design-in path
Three steps, in the order they usually happen with ODMs and brand owners.
Request samples
Evaluation samples shipped against your platform and socket — PSU, IBC, BBU, HVDC or fan.
Efficiency validation
FAE support for efficiency and thermal testing on your board, and schematic review.
Volume agreement
Volume pricing and supply security aligned to your platform launch. Taiwan-based design and support.
Tell us about your power stage
Send the topology, input and output rails, current per phase and switching frequency. We will come back with a device shortlist and sample availability.