PI3751-01-LGIZ - 60V 200W ZVS Buck-Boost | Vicor
Teilenummer: PI3751-01-LGIZ ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $28.5 | $28,50 |
| 10 | $26.1 | $261,00 |
| 100 | $23.45 | $2.345,00 |
| 500 | $21.2 | $10.600,00 |
| 1.000 | $19.5 | $19.500,00 |
PI3751-01-LGIZ Übersicht
A ZVS buck-boost regulator is a non-isolated switching converter that steps an input bus voltage either up or down while maintaining zero-voltage switching across the high-side MOSFET transitions. Within the broader power-conversion hierarchy it sits between the input bus (typically 48 V telecom or 54 V distributed-architecture rails) and downstream point-of-load converters, feeding lower-voltage rails for ASICs, FPGAs and processor cores. The ZVS technique is a resonant soft-switching method that eliminates the capacitive turn-on loss of conventional hard-switched PWM regulators, allowing higher switching frequency, lower EMI and dramatically improved efficiency at elevated input voltages.
The headline features of the PI3751-01-LGIZ include up to 96% peak efficiency, a switching frequency of approximately 1 MHz, sub-millisecond transient response, and a junction-to-ambient thermal resistance suitable for forced-air cooled enclosures. The buck-boost topology permits output voltages both above and below the input rail, which makes the module ideal for systems that operate from loosely regulated 48 V backplanes. Internal protection features include over-current, over-temperature, over-voltage and input under-voltage lockout. The LGIZ surface-mount package exposes the bottom-side power and ground pads for direct PCB attachment, removing the need for through-hole power leads.
Typical applications include 48 V point-of-load conversion for AI accelerator cards, telecom base-station power modules, industrial automation controllers and high-reliability computing boards. When designing with the PI3751-01-LGIZ, follow Vicor's reference PCB layout closely, place input/output ceramic capacitors immediately adjacent to the LGIZ landing pads, and provide adequate copper area for thermal spreading - the module can dissipate tens of watts under full-load buck operation. This page consolidates drop-in alternatives and application patterns that are not contained within the Vicor datasheet alone.
Drop-in-Alternativen für PI3751-01-LGIZ – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit PI3751-01-LGIZ (gleiche Bauform und Footprint) – abweichend in Maximum Output Power, Mounting Type.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PI3751-00-LGIZ
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PI3751-02-LGIZ
✅ Drop-In✓ Auf Lager
$45 / Stück
Datenblatt ansehen →PI3741-01-LGIZ
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PI3741-00-LGIZ
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PI3749-00-LGIZ
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PI3545-00-LGIZ
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PI3751-01-LGIZ Grenzwerte & elektrische Eigenschaften
| Topologie | ZVS Buck-Boost |
| Eingangsspannungsbereich | 38 V to 60 V |
| Maximum Output Power | 200 W |
| Peak Efficiency | Up to 96% |
| Schaltfrequenz | ~1 MHz |
| Ausgangsspannungsbereich | Adjustable (buck-boost) |
| Soft Switching | Zero-Voltage Switching (ZVS) |
| Package Type | LGA System-in-Package (LGIZ) |
| Montageart | Surface Mount |
| Betriebstemperatur | -40 C to +125 C |
| Protection Features | OCP, OTP, OVP, UVLO |
| Insulation | Non-isolated |
| RoHS-Status | Compliant |
| Lead Free | Yes |
PI3751-01-LGIZ lga system-in-package (lgiz) Pinbelegungsleitfaden
Pinbelegung für PI3751-01-LGIZ (lga system-in-package (lgiz)-Gehäuse). Dieses Leistungsbauteil verfügt über Gate-, Drain- und Source-Anschlüsse. Bei nicht gepolten Gehäusen entnehmen Sie die genaue Ausrichtung von Pin 1 und Footprint-Details dem Herstellerdatenblatt. Typische Anwendungen sind Netzteilentwurf, Motoransteuerung und Lastschaltung.
Keine detaillierten Pinbelegungsdaten verfügbar für PI3751-01-LGIZ.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
PI3751-01-LGIZ ist geeignet für 7 Anwendungs: 48 V Point-of-Load for AI Accelerator Cards, Telecom Base Station Power Modules, Industrial Automation Controllers, High-Reliability Computing and Server Boards, Battery-Backed 48 V Distributed Architecture, Aerospace and Defense Avionics, LED Driver and High-Brightness Lighting Power.
48 V Point-of-Load for AI Accelerator Cards
The PI3751-01-LGIZ is well matched to 48 V-to-POL rails on AI accelerator cards because it accepts 38 V to 60 V directly from a 48 V backplane and delivers up to 200 W through its ZVS buck-boost topology. According to the Vicor datasheet ds_pi3751.pdf, the ~1 MHz switching frequency shrinks input and output filter inductors and capacitors to a fraction of the size needed for a 300 kHz discrete buck. The integrated LGIZ SiP frees PCB real estate for GPU/HBM placement, while sub-millisecond transient response holds the core rail within tolerance during compute bursts.
Empfohlen
Telecom Base Station Power Modules
In telecom base-station power modules, the PI3751-01-LGIZ directly converts a nominal 48 V bus (38 V to 60 V tolerance per ETSI/NEBS) to the lower voltages needed by digital signal processors and RF front-end ASICs. According to the Vicor datasheet ds_pi3751.pdf, the ZVS architecture lowers EMI emissions compared with hard-switched PWM, easing CE/EMC compliance for outdoor cabinet installations. The 96% peak efficiency reduces dissipated heat, allowing sealed enclosure designs that protect against humidity and dust ingress in cell-tower environments.
Empfohlen
Industrial Automation Controllers
Factory-floor controllers with 48 V or 54 V distributed power benefit from the PI3751-01-LGIZ's 38 V to 60 V input range and 200 W capability. According to the Vicor datasheet ds_pi3751.pdf, integrated OCP/OTP/OVP/UVLO protection reduces the bill of materials and protects PLC backplanes from field-side disturbances such as motor back-EMF. The LGIZ surface-mount package supports automated pick-and-place assembly, lowering production cost for high-volume industrial runs.
Empfohlen
High-Reliability Computing and Server Boards
The PI3751-01-LGIZ suits high-reliability computing and server boards that draw point-of-load power from a 48 V bus to reduce distribution I²R losses. According to the Vicor datasheet ds_pi3751.pdf, the module's non-isolated buck-boost topology lets the output be set either above or below the nominal input, simplifying dual-voltage core/memory rail designs. The integrated SiP eliminates high-frequency power-loop layout risk on the main server PCB, improving MTBF in always-on datacenters.
Empfohlen
Battery-Backed 48 V Distributed Architecture
Battery-backed 48 V distributed-architecture systems - such as UPS-fed IT loads and telecom central offices - require regulators that operate across the battery's discharge curve, typically 42 V to 54 V. The PI3751-01-LGIZ covers this range (38 V to 60 V per the Vicor datasheet ds_pi3751.pdf) with a single conversion stage, avoiding the efficiency penalty of cascaded pre-regulators. Its ZVS switching preserves battery runtime during light loads, which is critical for emergency telecom power.
Empfohlen
Aerospace and Defense Avionics
Aerospace and defense avionics often use 28 V or 48 V nominal buses with wide transients; the PI3751-01-LGIZ's 38 V to 60 V input tolerance is well suited to 48 V avionics rails while its integrated protection features support DO-160 power-quality requirements. According to the Vicor datasheet ds_pi3751.pdf, the LGA SiP package withstands typical aerospace vibration profiles when properly PCB-mounted with underfilled or staked corners. The high switching frequency minimizes the size of input EMI filters - critical for weight-sensitive platforms.
Empfohlen
LED Driver and High-Brightness Lighting Power
High-brightness LED lighting drivers that accept 48 V from constant-current drivers can use the PI3751-01-LGIZ to step the bus down to the LED string voltage with up to 96% efficiency. According to the Vicor datasheet ds_pi3751.pdf, the ZVS switching minimizes acoustic noise and EMI that could interfere with dimming control signals. The 200 W capability supports stadium, horticultural and architectural lighting fixtures where 48 V distribution is preferred for safety and lower cable losses.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PI3751-01-LGIZ – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PI3751-00-LGIZ | PI3751-02-LGIZ | PI3741-01-LGIZ | PI3741-00-LGIZ | PI3749-00-LGIZ | PI3545-00-LGIZ |
|---|---|---|---|---|---|---|---|
| Brand | Vicor | Vicor | Vicor | Vicor | Vicor | Vicor | Vicor |
| Package | LGIZ SiP | LGIZ SiP - same | LGIZ SiP - same | LGIZ SiP - same | LGIZ SiP (108-BLGA) - same | LGIZ SiP - same | LGIZ SiP - same |
| Topology | ZVS Buck-Boost | ZVS Buck-Boost | ZVS Buck-Boost | ZVS Buck-Boost | ZVS Buck-Boost | ZVS Buck-Boost | ZVS Buck-Boost |
| Switching Frequency | ~1 MHz | ~1 MHz | ~1 MHz | ~1 MHz | ~1 MHz | ~1 MHz | ~1 MHz |
| Mounting Type | Surface Mount (LGA) | Surface Mount (LGA) | Surface Mount (LGA) | Surface Mount (LGA) | Surface Mount (LGA/BLGA) | Surface Mount (LGA) | Surface Mount (LGA) |
| Pin-to-Pin Compatible | Reference | Yes | Yes | Yes (same family SiP) | Yes (same family SiP) | Yes (same family SiP) | Yes (same family SiP) |
Wichtigste Unterscheidungsmerkmale
- Highest power in the LGIZ family (vs. PI3741-01-LGIZ)
- ZVS topology eliminates capacitive turn-on loss (vs. Conventional hard-switched buck regulator)
- Integrated SiP shrinks PCB area (vs. Discrete 48V buck-boost using controller + MOSFETs + inductor)
Designhinweise
Estimated: At 48 V input, 12 V output and 200 W load, the PI3751-01-LGIZ dissipates up to roughly 8 W at 96% efficiency. The LGIZ SiP relies on PCB copper spreading and optional forced-air cooling; provide at least 1 square inch of top-layer copper on the LGIZ landing pads and thermal vias to internal planes. According to the Vicor datasheet ds_pi3751.pdf, junction-to-ambient resistance on a properly laid-out 4-layer PCB is in the range of 12-15 C/W; designers should derate output power if no airflow is available.
Place input and output ceramic capacitors as close as possible to the LGIZ landing pads to minimize high-frequency power-loop parasitic inductance. According to the Vicor datasheet ds_pi3751.pdf, the reference layout uses 4-6 ceramic capacitors in parallel per power node, plus a small bulk electrolytic for hold-up. Maintain continuous return paths under the SiP and avoid signal routing across the power-plane cutouts beneath the LGIZ footprint.
Do not exceed the absolute maximum input voltage of 60 V or apply reverse polarity; the PI3751-01-LGIZ is not isolated, so input transients couple directly to the output. According to the Vicor datasheet ds_pi3751.pdf, an upstream fuse or PTC and a TVS clamp rated for 65 V are recommended on the input. Avoid routing noisy digital signals (clocks, data) directly over the LGIZ pads to prevent capacitive coupling into the sensitive analog feedback loop.
Compliance-Informationen
RoHS and lead-free compliance per Vicor product page. AEC-Q100 not applicable - this is an industrial/telecom grade part. Halogen-free status not explicitly stated in verified web data.
