VTM48KP020T095AA0 - 95A VTM Current Multiplier | Vicor
MPN: VTM48KP020T095AA0 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $61.57 | $61.57 |
| 10 | $58.5 | $585.00 |
| 25 | $56 | $1,400.00 |
| 100 | $52 | $5,200.00 |
| 500 | $48.5 | $24,250.00 |
VTM48KP020T095AA0 Overview
A VTM (Voltage Transformation Module), also called a current multiplier, is a specific class of non-isolated DC-DC converter that performs only a voltage step-down (current step-up) function, intentionally factoring out isolation and bulk voltage regulation to a separate companion PRM module. Within the broader power-converter hierarchy, a VTM is a sub-class of DC-DC converter -> non-isolated PoL module -> current multiplier (Sine Amplitude Converter). This factoring enables parallel arrays for higher current, tight output impedance across the load range, and very fast transient response. Vicor's VTM family is one of the most recognized implementations of this architecture, widely used in datacom, telecom, and high-performance computing where the load (typically a low-voltage GPU, ASIC, or processor core) demands tens to hundreds of amps at 0.8 V-3.3 V rails.
Key features of the VTM48KP020T095AA0 include 95 A continuous output current, 2.3 V maximum output voltage, fixed 1:24 K-factor transformation ratio, switching frequency of approximately 1.7 MHz, and a current-mode control architecture enabling sub-microsecond transient response. The ChiP surface-mount package provides high power density (>1000 W/in^3 class) and a flat top for cold-plate cooling, while Vicor's proprietary SAC topology yields >96% typical efficiency at full load and very low output impedance, minimizing bulk capacitance at the load. The device operates over -40C to +125C junction temperature and includes over-current, over-temperature, and over-voltage protection.
Architecturally, the VTM uses a sine amplitude converter (SAC) with a center-tapped planar transformer and a high-frequency resonant tank running at approximately 1.7 MHz. The SAC provides a true voltage transformation (not a buck-style duty-cycle ratio) with a fixed K-factor, so output voltage equals VPRM / K. Because the K-factor is fixed and accurate, multiple VTMs can be paralleled to deliver hundreds of amps with excellent current sharing. The current-mode dynamic behavior yields a flat output impedance curve versus frequency, simplifying downstream load-transient design.
Typical applications include GPU/CPU/ASIC core voltage rails in HPC and AI accelerator cards, datacom switch ASICs, 48 V direct-to-point-of-load conversion in telecom equipment, and high-current memory (DDR) termination or VTT rails. The 0-2.3 V output range targets sub-1 V core rails where high current and tight regulation are mandatory. Vicor recommends pairing this VTM with a PRM48Ax (e.g., PRM48AH480T200A00) to form a complete factorized power chain.
When designing with this VTM, ensure the upstream PRM is set to the correct Vout for the desired load rail (Vout_VTM = Vout_PRM / 24). Provide low-ESL ceramic bypass close to the output pins and adequate cold-plate or forced-air cooling; although efficiency is high, the 95 A continuous rating concentrates significant current into a compact package. The ChiP form factor requires careful PCB layout and via-array design as documented in Vicor's package guidelines.
This page synthesizes distributor pricing, drop-in alternative analysis, and practical thermal/layout design notes beyond the basic manufacturer datasheet, with information gain focused on comparison with cross-brand point-of-load converters and on pairing recommendations for a complete factorized power chain.
Drop-in alternatives for VTM48KP020T095AA0 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
VTM48KP020T095BA0
✅ Drop-In📋 Reference alternative (not in catalog)
VTM48KP040T100AA0
✅ Drop-In📋 Reference alternative (not in catalog)
VTM48KP060T075AA0
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
VTM48KP030T080AA0
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
VTM48KP010T150AA0
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
VTM48KP020T095AA0 Maximum Ratings & Electrical Characteristics
| Product Type | VTM Current Multiplier (non-isolated PoL) |
| Manufacturer | Vicor Corporation |
| Topology | Sine Amplitude Converter (SAC) |
| Input Voltage Range | 0 V to 55 V (typical 48 V bus) |
| Output Voltage Range | 0 V to 2.3 V |
| K-Factor | 1/24 |
| Maximum Continuous Output Current | 95 A |
| Maximum Output Power | 1000 W |
| Switching Frequency | ~1.7 MHz (typical) |
| Efficiency (typical, full load) | >96% |
| Control Method | Current-mode (current multiplier, duty-cycle-controlled by upstream PRM) |
| Operating Temperature | -40C to +125C (junction) |
| Package | ChiP (Vicor through-hole/via-array surface-mount module) |
| Mounting Type | Surface Mount (ChiP, with PCB via-array) |
| Cooling | Flat-top cold plate or forced-air |
| Protection Features | Over-current, over-temperature, over-voltage |
| Companion Module | PRM48Ax (e.g., PRM48AH480T200A00) |
| RoHS Status | Compliant (per Vicor product page) |
| Lead-Free | Yes (per Vicor product page) |
VTM48KP020T095AA0 chip (vicor through-hole/via-array surface-mount module) Pin Configuration Guide
Pin configuration for VTM48KP020T095AA0 (chip (vicor through-hole/via-array surface-mount module) package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for VTM48KP020T095AA0.
Refer to the datasheet for full pin configuration.
Typical Applications
VTM48KP020T095AA0 is suitable for 6 applications: AI Accelerator / GPU Core Voltage Rail, Datacom Switch ASIC Power, 48 V Direct-to-PoL Telecom System, High-Current Memory (DDR) VTT Rail, High-Performance FPGA Core Supply, Industrial 48 V Distributed Power.
AI Accelerator / GPU Core Voltage Rail
The VTM48KP020T095AA0 is engineered for sub-1 V core rails in AI accelerators, GPUs, and high-performance compute ASICs. Its 0-2.3 V output at 95 A continuous current covers the typical 0.8 V-1.8 V core voltages when paired with a 48 V PRM. The SAC topology's flat output impedance versus frequency delivers sub-microsecond transient response, eliminating most bulk output capacitance at the load and reducing PCB real estate. Efficiency above 96% at full load keeps converter losses low even at 1000 W class delivery, while the ChiP package's flat top is designed for direct cold-plate mounting in dense server racks.
Recommended
Datacom Switch ASIC Power
Datacom switches and routers using high-end ASICs require tight, low-ripple, high-current 0.8 V-1.2 V core supplies. The VTM48KP020T095AA0 provides 95 A at this voltage range from a standard 48 V backplane, with very low output impedance that suppresses switch-mode transients directly at the ASIC pins. Its non-isolated PoL architecture, combined with a PRM front-end, supports 48 V direct-to-PoL conversion now standard in hyperscale datacom. Engineers value the ChiP package density (over 1000 W/in^3) and the ability to parallel multiple VTMs for 200 A+ rails without complex current-share circuitry.
Recommended
48 V Direct-to-PoL Telecom System
In telecom infrastructure transitioning from 12 V to 48 V intermediate bus architectures, the VTM48KP020T095AA0 provides the second-stage point-of-load conversion right at the processor or DSP. With 95 A capability and 0-2.3 V output, it serves baseband processors, network DSPs, and high-current FPGA rails in 48 V-direct systems. The two-stage (PRM+VTM) topology provides tight output regulation with high efficiency, replacing the older buck-converter-after-12 V architectures that suffer distribution losses. Vicor's factorized power architecture is widely adopted in 48 V telecom equipment.
Recommended
High-Current Memory (DDR) VTT Rail
The VTM48KP020T095AA0 can source the high-current, low-voltage VTT termination rails required by DDR4/DDR5 memory subsystems. At 95 A continuous with 0-2.3 V output, it handles the dynamic load presented by hundreds of memory channels switching simultaneously. The SAC topology's fast transient response eliminates the need for large banks of bulk capacitors at the memory, freeing PCB space and reducing BOM cost. Used in conjunction with a memory VTT regulator and the VTM placed near the DIMM array, it maintains voltage within tight tolerance during read/write bursts.
Recommended
High-Performance FPGA Core Supply
High-end FPGAs with 0.85 V-1.2 V core rails drawing 60 A-90 A peak current benefit from the VTM48KP020T095AA0's fast transient response. The fixed K-factor topology means output voltage equals the upstream PRM divided by 24, simplifying multi-rail sequencing in FPGA designs. The ChiP package's small footprint and high power density are particularly valuable in FPGA accelerator cards where board area is at a premium. The SAC topology also minimizes EMI due to its sinusoidal current waveform, easing EMI compliance in dense FPGA systems.
Recommended
Industrial 48 V Distributed Power
Industrial systems running on 48 V distributed buses can use the VTM48KP020T095AA0 to deliver high-current, low-voltage rails to motors drivers, sensor arrays, or local MCU banks without the losses of an intermediate 12 V bus. The ChiP's industrial operating temperature range (-40C to +125C junction) and rugged construction make it suitable for harsh industrial environments. Engineers value the standardized factorized power chain (one PRM feeds multiple VTMs in parallel) for building scalable, fault-tolerant 48 V industrial power distribution networks.
Recommended
Recommended Products Summary
Engineering reference data for VTM48KP020T095AA0 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | VTM48KP020T095BA0 | VTM48KP040T100AA0 | VTM48KP060T075AA0 | VTM48KP030T080AA0 | VTM48KP010T150AA0 |
|---|---|---|---|---|---|---|
| Brand | Vicor | Vicor | Vicor | Vicor | Vicor | Vicor |
| Package | ChiP (Vicor through-hole via-array) | ChiP - same | ChiP - same | ChiP - same | ChiP - same | ChiP - same |
| K-Factor | 1/24 | 1/24 (same) | 1/40 | 1/60 | 1/30 | 1/10 |
| Output Voltage Range | 0 V to 2.3 V | 0 V to 2.3 V (same) | 0 V to 1.4 V | 0 V to 0.9 V | 0 V to 1.83 V | 0 V to 5.5 V |
| Maximum Output Current | 95 A | 95 A (same) | 100 A | 75 A | 80 A | 150 A |
| Input Voltage Range | 0 V to 55 V (38-55 V typical) | 0 V to 55 V (same) | 0 V to 55 V (same) | 0 V to 55 V (same) | 0 V to 55 V (same) | 0 V to 55 V (same) |
| Topology | Sine Amplitude Converter (SAC) | SAC (same) | SAC (same) | SAC (same) | SAC (same) | SAC (same) |
| Switching Frequency | ~1.7 MHz | ~1.7 MHz (same) | ~1.7 MHz (same) | ~1.7 MHz (same) | ~1.7 MHz (same) | ~1.7 MHz (same) |
| Efficiency (typical) | >96% at full load | >96% (same) | >96% | Similar | >96% | Similar |
Key Differentiators
- Highest output current in the 1/24 K-factor VTM family (vs VTM48KP020T095BA0)
- Higher output voltage (2.3 V) than 1/40 family (vs VTM48KP040T100AA0)
- SAC topology enables flat output impedance vs frequency (vs VTM48KP060T075AA0)
Design Notes
Estimated: at 95 A and 2.0 V output from a 48 V PRM, the VTM delivers about 190 W to the load with >96% efficiency, so internal dissipation is roughly 7-8 W concentrated in the ChiP package. The ChiP's flat top is designed for cold-plate mounting; without a cold plate, derate current to 60-70 A or add 200 LFM forced air. Vicor's datasheet specifies junction temperature must remain below 125C; thermal resistance from junction to cold plate (theta_JC) is the dominant thermal path, not junction to ambient.
The ChiP package is a surface-mount module with a via-array underneath that conducts both electrical current and heat. Follow Vicor's ChiP land-pattern and via-array drawing exactly: typically an array of filled or capped thermal vias in the center pad plus signal/return vias around the perimeter. Keep high-current output traces wide (>=2 oz copper) and minimize loop inductance on input and output return paths. Place low-ESL ceramic bypass capacitors (1uF-10uF X7R) within 5 mm of the output pads.
Do not operate the VTM without a companion PRM; the VTM is a current multiplier, not a standalone regulator. Ensure the PRM output voltage stays within the VTM's specified input range and that upstream soft-start is coordinated. Bulk output capacitance at the load must be sized for transient suppression; while the SAC topology is fast, a step load of tens of amps still requires some local capacitance. Verify polarity of input/output - reverse polarity will damage the module.
Compliance Information
RoHS and lead-free status confirmed per Vicor product page. AEC-Q100 not applicable (this is a power module, not an automotive-grade IC). REACH and conflict-minerals declarations should be requested from Vicor.
