VTM2308S60Z0825T00 - 25A VTM Current Multiplier 7.5V Out | Vicor
Référence : VTM2308S60Z0825T00 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $117.84 | $117,84 |
| 10 | $112.24 | $1 122,40 |
| 25 | $105.5 | $2 637,50 |
| 50 | $98.4 | $4 920,00 |
| 100 | $92.15 | $9 215,00 |
VTM2308S60Z0825T00 Présentation
What is a VTM (Voltage Transformation Module)? A VTM is a fixed-ratio isolated or non-isolated DC-DC transformer module - also referred to as a Point-of-Load current multiplier - that operates from a regulated primary bus to deliver isolated or non-isolated outputs at high current. Conceptually it sits within the factorized power architecture between a PRM (which provides the regulated input) and the load, performing the high-current voltage step-down at extremely high bandwidth. Its hierarchical placement is: DC-DC transformer / current multiplier → DC-DC converter module → power module → power management IC → semiconductor.
Key electrical specifications include a 26V to 60V input operating range, nominal 7.5V output at 25 A (188 W output power), and a K-factor of 1/8 (8:1 step-down). The device is specified over -40 °C to +125 °C internal temperature (T-Grade). The SM-ChiP surface-mount form factor is compatible with standard pick-and-place assembly processes. Co-molded ChiP packaging provides enhanced thermal management via a large thermal interface area and superior thermal conductivity, allowing the high-efficiency VTM2308 to deliver its 188W output without external heatsinks on properly laid-out 4+ layer PCBs.
The VTM2308 leverages Vicor's SAC™ zero-current-switching / zero-voltage-switching topology to minimize switching losses and EMI. Compared with conventional buck or forward-converter approaches at the same power level, the VTM achieves higher efficiency, faster transient response, and substantially lower stored energy per cycle, allowing tighter output voltage regulation under dynamic loads and enabling downstream capacitance to be dramatically reduced.
Typical applications include high-current point-of-load regulation for processors, ASICs, FPGAs, and GPUs; telecom and datacom 48 V bus architectures; factory-automation and test-equipment power rails; and any system where a Vicor PRM front-end regulates an intermediate bus and the VTM2308 performs the final low-voltage, high-current step to the load with very high bandwidth.
When designing with this device, coordinate upstream with a compatible Vicor PRM module such as the PRM2311 or PRM2341 family: the VTM is a fixed-ratio current multiplier and does not regulate on its own. Provide adequate PCB copper area beneath the SM-ChiP thermal interface and follow Vicor's layout guide for input/output loop inductance minimization to preserve the SAC™ topology's efficiency and noise margins.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer product page.
Alternatives de remplacement direct pour VTM2308S60Z0825T00 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
VTM2308S60Z0825TZ0
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
VTM2308E60Z0825T00
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
VTM2308S60Z0824T00
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
VTM2308S60Z0825T00 Valeurs maximales et caractéristiques électriques
| Product Type | VTM Current Multiplier (DC-DC Transformer Module) |
| Topologie | SAC™ (Sine Amplitude Converter) ZCS/ZVS |
| Nombre de sorties | 1 |
| Plage de tension d'entrée | 26 V to 60 V |
| Nominal Output Voltage | 7.5 V |
| Plage de tension de sortie | 0 V to 7.5 V (varies with input/PRM regulation) |
| Courant de sortie maximal | 25 A |
| Output Power | 188 W nominal |
| K-Factor (Step-Down Ratio) | 1/8 (8:1) |
| Boîtier | SM-ChiP™ SMD (co-molded ChiP) |
| Type de montage | Surface Mount |
| Operating Internal Temperature | -40 °C to +125 °C (T-Grade) |
| Isolation | Non-isolated (VTM current multiplier) |
| Architecture Pairing | Driven by Vicor PRM front-end (Pre-Regulation Module) |
| Statut RoHS | Compliant |
Guide de configuration des broches du VTM2308S60Z0825T00 sm-chip™ smd (co-molded chip)
Configuration des broches du VTM2308S60Z0825T00 (boîtier sm-chip™ smd (co-molded chip)). Ce composant de puissance comporte des bornes de grille, de drain et de source. Pour les boîtiers non polarisés, consultez la fiche technique du fabricant pour l'orientation exacte de la broche 1 et les détails de l'empreinte. Les applications courantes incluent la conception d'alimentations, la commande de moteurs et la commutation de charges.
Aucune donnée de brochage détaillée disponible pour VTM2308S60Z0825T00.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
VTM2308S60Z0825T00 convient pour 7 applications: High-Current ASIC / FPGA Core Rail Regulation, 48 V Telecom / Datacom Point-of-Load Conversion, Datacenter Server and GPU Power Distribution, Industrial 24/48 V Bus Motor Drive Power, Test & Measurement Precision Power Rails, High-Performance Computing and AI Accelerator Boards, Aerospace / Defense 28 V Avionics Power Conditioning.
High-Current ASIC / FPGA Core Rail Regulation
The VTM2308S60Z0825T00 delivers 7.5 V at 25 A (188 W) with sub-microsecond transient response from a 48 V intermediate bus, making it ideal for powering high-current ASICs, FPGAs, and SoCs that step down further via on-board VRMs or directly tolerate a 7-9 V supply. Its SAC™ ZCS/ZVS topology achieves 96-98% peak efficiency, dramatically reducing converter losses versus a discrete buck at this 188 W level. Placed downstream of a Vicor PRM2341 pre-regulator, the pair forms a complete factorized power solution with very low stored energy and tight load-step regulation, eliminating the bulky output inductors and complex compensation of a discrete buck+controller design.
Recommandé
48 V Telecom / Datacom Point-of-Load Conversion
The VTM2308S60Z0825T00 is purpose-built for 48 V telecom and datacom architectures where standard -48 V bus power must be converted to a regulated low-voltage rail at the point of load. Its 26-60 V input range covers the full ETSI/ANSI telecom 48 V bus including battery-discharge excursions up to 60 V. With 188 W output, a single VTM2308 supplies an entire card's load; multiple VTMs in parallel scale to higher currents. The SM-ChiP surface-mount package enables high-density PoL placement near hot ASICs, slashing PDN losses between the bulk intermediate bus and the load by 8-10× versus centralized 12 V power distribution.
Recommandé
Datacenter Server and GPU Power Distribution
Within hyperscale and enterprise datacenter racks, the VTM2308S60Z0825T00 enables 48 V direct-to-PoL distribution at the GPU or CPU socket level, eliminating the intermediate 12 V bus and reducing distribution losses by an order of magnitude. At 25 A / 188 W per module, two parallel VTM2308s can satisfy a 400 W GPU AXL rail or a 350 W core rail without paralleling lower-current discrete bucks. Combined with a Vicor PRM front-end, this factorized power architecture supports the Open Compute Project (OCP) 48 V rack standards increasingly adopted by hyperscalers, with measured system efficiency improvements of 3-5% over 12 V intermediate bus architectures.
Recommandé
Industrial 24/48 V Bus Motor Drive Power
Factory automation motor drives and machine-control PLCs frequently use 24 V or 48 V industrial bus rails with high-current downstream loads such as stepper motor driver ICs or servo amplifiers. The VTM2308S60Z0825T00 bridges these industrial bus voltages to a clean 7.5 V rail that downstream point-of-load converters use to feed analog and digital motor-control sections. The 26-60 V input tolerance accommodates industrial 24 V battery-backed supplies as well as nominal 48 V factory bus plants, with operating temperatures up to +125 °C TINTERNAL suiting sealed cabinet deployments. Co-molded ChiP thermal interface handles the high ambient temperatures typical of unventilated industrial enclosures.
Recommandé
Test & Measurement Precision Power Rails
Bench-top and ATE (Automatic Test Equipment) power systems need very low-noise, fast-transient rails to drive precision analog and mixed-signal DUTs. The VTM2308S60Z0825T00 paired with a Vicor PRM provides exceptionally clean 7.5 V rails with SAC™ switching topology output ripple well below discrete buck converters, plus microsecond-class transient response to dynamic ATE loads. 188 W output supports multi-channel test instruments where each channel needs an isolated, regulated rail. The surface-mount SM-ChiP package fits compact instrument form factors where heat-dissipating discrete converters are challenging to place.
Recommandé
High-Performance Computing and AI Accelerator Boards
AI training and inference accelerator cards (GPUs, TPUs, custom ASICs) draw 200-700 W per board from 48 V rack distribution and require tightly regulated, low-noise core voltages with sub-microsecond transient response. The VTM2308S60Z0825T00 enables 48 V-to-PoL conversion right at the accelerator card, with 188 W output per module and the ability to place several in parallel for higher currents. Its SAC™ topology delivers high efficiency and very low stored energy, dramatically reducing output capacitance versus discrete bucks - critical when board area and weight are premium. The 188 W / 25 A rating makes it well-suited as one of several paralleled VTMs feeding an accelerator's VCORE rail via downstream multi-phase VRs.
Recommandé
Aerospace / Defense 28 V Avionics Power Conditioning
Avionics and defense platforms operate on 28 VDC MIL-STD-704 bus power and require rugged, high-efficiency point-of-load conversion for radar processing, electronic warfare, and flight control subsystems. The VTM2308S60Z0825T00's 26-60 V input range spans 28 V nominal avionics with headroom for transient excursions up to 60 V per MIL-STD-1275. Its 188 W output and 25 A current capability satisfies single-board avionics processor loads. The co-molded SM-ChiP package offers mechanical robustness and excellent thermal performance in sealed enclosures where convective cooling is limited, while the SAC™ topology's high efficiency minimizes the waste heat that could otherwise challenge thermal management in confined avionics bays.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour VTM2308S60Z0825T00 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | VTM2308S60Z0825TZ0 | VTM2308E60Z0825T00 | VTM2308S60Z0824T00 |
|---|---|---|---|---|
| Package | SM-ChiP (SMD, co-molded ChiP) | SM-ChiP (SMD) - same | SM-ChiP (SMD) - same | SM-ChiP (SMD) - same |
| Brand | Vicor | Vicor | Vicor | Vicor |
| Topology | SAC ZCS/ZVS current multiplier | SAC ZCS/ZVS - same | SAC ZCS/ZVS - same | SAC ZCS/ZVS - same |
| Output Voltage | 7.5 V nominal | 7.5 V nominal | 7.5 V nominal | 7.5 V nominal |
| Maximum Output Current | 25 A | 25 A | 25 A | 24 A |
| K-Factor | 1/8 (8:1) | 1/8 (8:1) | 1/8 (8:1) | 1/8 (8:1) |
Principaux différenciateurs
- Direct part-number successor with no redesign required (vs VTM2308S60Z0825TZ0)
- Same footprint, slightly higher current rating margin (vs VTM2308S60Z0824T00)
- Part of proven factorized power architecture (vs Discrete buck+FET+controller designs)
Notes de conception
The VTM2308S60Z0825T00 is a fixed-ratio current multiplier and does not regulate on its own. Per the Vicor datasheet and product family documentation, a Vicor PRM (Pre-Regulation Module) must provide the regulated input bus. Typical pairings are PRM2311 or PRM2341 families. Without a regulated PRM front-end, the output voltage tracks input × K-factor (1/8), and input variation/load transients pass through to the load. Always verify PRM-VTM compatibility tables in the Vicor design guide before finalizing the BOM.
The SM-ChiP package relies on a co-molded thermal interface area on the bottom of the module for heat removal. Per Vicor application guidance, provide at least 1-2 square inches of top-layer copper tied to the SM-ChiP thermal pad plus multiple inner copper layers stitched with thermal vias. The package's superior thermal conductivity allows 188 W output without an external heatsink on properly laid-out 4+ layer PCBs, but inadequate copper area forces TINTERNAL above the +125 °C rating and trips thermal protection, throttling or shutting down the VTM.
Per Vicor layout guidelines, minimize the input and output loop inductance by placing input/output capacitors and the VTM on the same PCB layer with wide, short traces and via stitching for return currents. The SAC™ zero-voltage/zero-current-switching topology is sensitive to parasitic inductance, which can degrade efficiency and produce ringing. Keep the SM-ChiP thermal pad free of solder mask in the heat-transfer region and use Vicor-recommended land pattern exactly to avoid solder joint reliability issues.
Estimated: A common design mistake is treating the VTM2308 as a standalone buck-style regulator and omitting the PRM front-end, which leads to unregulated output that tracks the input. Another frequent error is undersizing PCB copper area, which causes thermal shutdown well before the 188 W rating. Always cross-check the VTM operating point against the Vicor efficiency vs. load curve for the chosen K-factor combination to confirm derating assumptions, and follow the layout guide's via stitching for thermal pad copper for reliable +125 °C internal temperature operation.
Informations de conformité
Vicor VTM SM-ChiP family is RoHS compliant and lead-free per manufacturer product page. AEC-Q100 not applicable to module-level product. REACH and conflict minerals statements available from Vicor environmental compliance page.
