PI3542-00-LGIZ - 48V ZVS Buck Regulator, 2.5V/10A | Vicor
MPN: PI3542-00-LGIZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $25.5 | $25.50 |
| 10 | $23.2 | $232.00 |
| 100 | $20.75 | $2,075.00 |
| 500 | $18.4 | $9,200.00 |
| 1,000 | $16.1 | $16,100.00 |
PI3542-00-LGIZ Overview
What is a ZVS buck regulator? A ZVS (Zero-Voltage Switching) buck regulator is a type of synchronous step-down (buck) DC-DC converter topology that switches the high-side MOSFET when the drain-source voltage is approximately zero, eliminating switching losses in the hard-switching transition. This topology belongs to the soft-switching DC-DC converter family and is widely used in high-input-voltage, high-density point-of-load applications where efficiency, thermal performance, and small PCB area are critical.
Key features include: peak efficiency above 95% across the load range, parallel operation with current sharing, internal MOSFET power switches and inductor, integrated controller, and over-current/over-temperature protection. The PI3542-00-LGIZ integrates controller, power switches, and support components all within the SiP, eliminating the need for an external power inductor.
Typical applications include 48V direct-to-point-of-load conversion in telecom, datacom, industrial, and high-end computing systems where a 12V intermediate bus is bypassed. The wide 36V-60V input range also supports nominal 48V telecom rails, industrial battery systems, and distributed power architectures.
When designing with this device, follow Vicor's PCB layout guidelines for the LGA SiP land pattern and thermal management. Maintain at least 6A continuous airflow over the package, or use a heatsink, to ensure reliable operation. The PI3542-00-LGIZ is part of the PI354x-00 family sharing the same footprint for different output voltages.
This page synthesizes distributor pricing, drop-in same-package family variants, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PI3542-00-LGIZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PI3542-00-LGIZ (same form factor and footprint) — differing in Protection Features, RoHS Status, Synchronous Rectifier, Topology.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PI3543-00-LGIZ
✅ Drop-In✓ In Stock
$12.18 / Unit
View Datasheet →PI3544-00-LGIZ
✅ Drop-In📋 Reference alternative (not in catalog)
PI3545-00-LGIZ
✅ Drop-In📋 Reference alternative (not in catalog)
PI3542-00-LGIZ Maximum Ratings & Electrical Characteristics
| Topology | Buck (Step-Down) ZVS |
| Function | DC-DC Switching Regulator |
| Input Voltage Range | 36 V to 60 V |
| Output Voltage | 2.5 V (fixed/adjustable, 2.2 V option) |
| Output Current (Max) | 10 A |
| Efficiency (Peak) | > 95% (per Vicor datasheet family) |
| Package / Mounting | 85-BLGA SiP Module, Surface Mount |
| Pin Count | 85 (BGA) |
| Internal Switches | Yes (integrated MOSFET + inductor) |
| Synchronous Rectifier | Yes |
| Protection Features | Over-current, Over-temperature, UVLO |
| Parallel Operation | Supported (current sharing) |
| RoHS Status | Compliant (per Vicor product page) |
| Series / Family | PI354x-00 Cool-Power ZVS Buck |
PI3542-00-LGIZ 85-blga sip module, surface mount Pin Configuration Guide
Pin configuration for PI3542-00-LGIZ (85-blga sip module, surface mount 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 PI3542-00-LGIZ.
Refer to the datasheet for full pin configuration.
Typical Applications
PI3542-00-LGIZ is suitable for 6 applications: 48V Telecom Point-of-Load Conversion, Datacom and Server Power Distribution, Industrial 48V Battery and Bus Systems, LED Driver and High-Brightness Lighting, Test and Measurement Equipment, High-End Computing and AI Accelerator Cards.
48V Telecom Point-of-Load Conversion
The PI3542-00-LGIZ is designed for direct 48V-to-2.5V conversion in telecom base stations and central-office equipment, eliminating the intermediate 12V bus. Its 36V-60V input range covers the full ETSI/ANSI 48V telecom rail envelope including transient excursions, while the integrated ZVS topology delivers above 95% peak efficiency and below 1% output ripple - critical for powering low-voltage ASICs, network processors, and SerDes PHYs that demand clean point-of-load rails.
Recommended
Datacom and Server Power Distribution
In hyperscale datacom and server racks, the PI3542-00-LGIZ enables direct 48V bus-to-2.5V point-of-load conversion, bypassing traditional 12V intermediate stages. This architecture reduces distribution losses by 4x compared to 12V-bus designs and supports the 2.5V core rails of modern CPUs, FPGAs, and memory. The part's parallel-operation capability allows two units to share load current at 20A, addressing high-current ASIC requirements with a compact SiP footprint.
Recommended
Industrial 48V Battery and Bus Systems
The PI3542-00-LGIZ suits industrial 48V battery systems, factory automation PLCs, and 48V-distributed robotics buses where a compact, high-efficiency step-down to 2.5V logic is required. Its 36V-60V steady-state input range handles battery charge variations and bus transients, while the integrated inductor SiP simplifies PCB layout in space-constrained industrial enclosures. Over-current and over-temperature protection ensure robust operation in harsh industrial environments with ambient temperatures up to the part's rated maximum.
Recommended
LED Driver and High-Brightness Lighting
The PI3542-00-LGIZ belongs to Vicor's Cool-Power ZVS Buck Regulator & LED Driver family and can drive high-brightness LED strings from a 48V supply with constant-current control via the feedback loop. Its high switching frequency and integrated inductor reduce the size of output filtering, while the ZVS topology keeps EMI low - critical in lighting fixtures where conducted emissions must meet FCC/CISPR standards. The wide 36V-60V input accepts any standard 48V LED-driver input source.
Recommended
Test and Measurement Equipment
Bench-top and rack-mount test equipment often requires clean, isolated low-voltage rails for analog signal conditioning, ADC/DAC references, and FPGA control logic. The PI3542-00-LGIZ provides 2.5V at 10A from a 48V bench supply with above 95% efficiency and integrated magnetics, reducing PCB area by approximately 50% compared to discrete buck designs. The SiP's predictable thermal performance enables fanless designs in quiet laboratory environments.
Recommended
High-End Computing and AI Accelerator Cards
AI accelerator cards and GPU compute modules increasingly adopt 48V direct-to-POL architectures to reduce distribution losses. The PI3542-00-LGIZ provides 2.5V at 10A from a 48V input in a compact 85-BLGA SiP, suitable for powering ASIC control logic, monitoring ICs, and auxiliary rails on high-current accelerator boards. Its parallel-operation capability enables scaling to higher currents by stacking units on the same output rail with current sharing.
Recommended
Recommended Products Summary
Engineering reference data for PI3542-00-LGIZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PI3543-00-LGIZ | PI3544-00-LGIZ | PI3545-00-LGIZ |
|---|---|---|---|---|
| Brand | Vicor | Vicor - same | Vicor - same | Vicor - same |
| Package | 85-BLGA SiP | 85-BLGA SiP - same | 85-BLGA SiP - same | 85-BLGA SiP - same |
| Output Voltage | 2.5 V | 3.3 V | 5.0 V | 12 V |
| Output Current | 10 A | 10 A | 10 A | 10 A |
| Input Voltage Range | 36 V to 60 V | 36 V to 60 V | 36 V to 60 V | 36 V to 60 V |
| Topology | ZVS Buck | ZVS Buck | ZVS Buck | ZVS Buck |
| Integrated Inductor | Yes | Yes | Yes | Yes |
| Parallel Operation | Yes (current sharing) | Yes (current sharing) | Yes (current sharing) | Yes (current sharing) |
Key Differentiators
- Only PI354x family member at 2.5V output (vs PI3543-00-LGIZ)
- Integrated magnetics in SiP (vs Discrete 48V buck solutions)
- ZVS soft-switching topology (vs Hard-switched buck converters)
Design Notes
The PI3542-00-LGIZ SiP dissipates approximately (60V-2.5V)*10A = 575W at maximum load in worst-case continuous operation; in typical 48V-to-2.5V/10A designs the dissipation is closer to (48-2.5)*10 = 455W input minus 25W output = around 5-8W. Estimated: at 5W dissipation and 25 C/W theta-JA, junction temperature rises 125 C above ambient. Provide at least 100 LFM airflow or attach a heatsink for full-load operation at elevated ambient.
Use the land pattern recommended in the Vicor PI354x-00 datasheet for the 85-BLGA SiP. Place input capacitors within 5mm of the input BGA balls and output capacitors within 5mm of the output balls. Use a top-layer copper flood under the SiP for thermal spreading and stitch vias to inner thermal planes. Avoid routing signal traces under the SiP pad array.
Do not exceed the 60V maximum input voltage, even transiently - the PI3542-00-LGIZ is designed for SELV-compliant systems limited to 60V steady-state. Ensure input fusing or TVS protection for hot-plug events where the 48V bus may ring above 60V during connector mating.
Compliance Information
RoHS compliant per Vicor product page and distributor listings (DigiKey, Mouser). Industrial grade part - not AEC-Q100 qualified. For automotive applications consult Vicor for AEC-Q100 variants.
