PI3754-00-LGIZ - Wide-Input ZVS Buck Regulator SiP | Vicor
MPN: PI3754-00-LGIZ ✓ Hoạt độngPI3754-00-LGIZ Tóm tắt
A buck regulator is a switched-mode DC-DC converter that steps a higher DC input voltage down to a lower regulated DC output voltage. Buck regulators sit within the broader power-management hierarchy: switching regulator -> DC-DC converter -> power management IC -> semiconductor. ZVS (Zero-Voltage Switching) is a soft-switching technique that switches the high-side MOSFET when its drain-to-source voltage is approximately zero volts, dramatically reducing switching losses and EMI compared with hard-switched PWM converters. The PI3740/PI3754 family uses this ZVS topology to deliver high efficiency across the entire load range.
Key features include a wide 8 V to 60 V input voltage range, a 24 V nominal output that can be adjusted downward with an external resistor divider, switching frequencies in the MHz range for small passive components, and parallel capability with single-wire current sharing for higher-power rails. The SiP integration eliminates parasitic inductance between the controller and the power FETs, allowing clean switching edges and reducing PCB real-estate. The LGA module also exposes the thermal pad to internal copper heat-spreading, supporting high continuous power without external heatsinks in many applications.
Typical applications include 48 V telecom point-of-load conversion, industrial 24 V bus regulation, battery-powered equipment requiring a regulated intermediate rail, and distributed power architectures where high-density SiPs simplify board layout. Compared with discrete buck designs, the PI3740/PI3754 family reduces BOM count, shrinks solution size, and shortens design time.
When designing with the PI3754-00-LGIZ, follow Vicor's recommended analog / power / ground layout partitioning from the datasheet to maintain noise isolation between the sensitive analog feedback path and the high-di/dt power loop. Decouple the input with low-ESL/ESR ceramic capacitors placed as close as possible to the VIN pins, and respect the minimum output capacitance specified for control-loop stability.
This page synthesizes distributor pricing, drop-in Vicor-family alternatives, and practical layout guidance not all collected in one place on the manufacturer datasheet, giving engineers a faster path from selection to prototype.
Bộ thay thế dễ dàng lắp đặt cho PI3754-00-LGIZ — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PI3754-00-LGIZ (cùng hình factor và footprint) — khác nhau ở Maximum Output Power, Mounting Type, Package Type, Topology.
PI3740-00-LGIZ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PI3749-00-LGIZ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PI3754-00-LGIZR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PI3754-00-LGIZ Tỷ lệ tối đa & tính chất điện
| Cấu trúc | ZVS Buck (zero-voltage switching) |
| Package Type | System-in-Package (SiP) LGA module (LGIZ) |
| Phạm vi điện áp đầu vào | 8 V to 60 V |
| Nominal Output Voltage | 24 V (adjustable via external resistor divider) |
| Maximum Output Power | 60 W |
| Kiểu đầu ra | Adjustable |
| Số lượng đầu ra | 1 |
| Control Mode | Voltage-mode / current-mode (per retrieved summary) |
| Parallel Operation | Supported, single-wire current sharing |
| Soft Switching | ZVS (Zero-Voltage Switching) |
| Integration Level | Controller + power switches + passives integrated |
| Kiểu lắp đặt | Surface Mount (LGA land grid array) |
| Khoảng nhiệt độ hoạt động | -40 C to +115 C |
| Package Height | 2.56 mm |
Hướng dẫn cấu hình chân PI3754-00-LGIZ 2.56 mm
Cấu hình chân cho PI3754-00-LGIZ (2.56 mm gói). Động cơ điện này có chân cổng, nguồn và đầu ra. Đối với các gói không phân極, tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết hướng dẫn chính xác của chân 1 và chi tiết về vân footprint. Các ứng dụng phổ biến bao gồm thiết kế nguồn cung cấp điện, điều khiển động cơ và chuyển đổi tải.
Không có dữ liệu chân cụ thể sẵn có cho PI3754-00-LGIZ.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
PI3754-00-LGIZ phù hợp cho 6 Áp dụngs: 48 V Telecom Point-of-Load Conversion, Industrial 24 V Bus Regulation, Battery-Powered Equipment Intermediate Rails, Distributed Power Architecture Front-End, LED Lighting and High-Current Driver Rails, Test and Measurement Equipment Power.
48 V Telecom Point-of-Load Conversion
Step a 48 V telecom backplane rail down to a regulated 24 V (or externally programmed lower voltage) for downstream POL converters. The PI3754-00-LGIZ's 8 V to 60 V input window accommodates nominal 48 V rails with under-voltage and surge transients, and its ZVS topology maintains high efficiency across the load - critical for telecom hardware where every watt of conversion loss adds to cooling cost. The integrated SiP shrinks the power section versus a discrete buck, freeing board area for DSP and SerDes circuitry while Vicor's single-wire current-share support lets designers parallel two units for higher-power POL rails.
Được đề xuất
Industrial 24 V Bus Regulation
Condition factory-floor 24 V industrial bus power into a clean, isolated-or-non-isolated intermediate rail for motor drives, PLC I/O, and sensor signal chains. The PI3754-00-LGIZ tolerates 24 V nominal inputs that swing 8 V to 60 V during load-dump and brown-out events, while ZVS switching reduces conducted and radiated EMI - important where the same enclosure hosts sensitive analog front-ends. Vicor's datasheet typical applications list explicitly names industrial 24 V distribution, and the SiP's -40 C to +115 C rating covers unconditioned control cabinets.
Được đề xuất
Battery-Powered Equipment Intermediate Rails
Generate a regulated intermediate bus (commonly 24 V or 12 V) from multi-cell battery stacks whose voltage swings widely as cells discharge. The PI3754-00-LGIZ accepts 8 V to 60 V input, handling battery packs from 6S Li-ion up to 12S or lead-acid 48 V systems. ZVS switching keeps light-load efficiency high - extending battery runtime in portable or mobile applications - while the single-wire current-share bus lets two SiPs share load for higher surge capability during motor or RF transmission events.
Được đề xuất
Distributed Power Architecture Front-End
Replace an isolated front-end converter with a Vicor PI3754-00-LGIZ fed from a 48 V or 24 V bus, using the part's high-density SiP to deliver 60 W of intermediate-bus power. Per the Vicor datasheet, this architecture reduces component count, lowers BOM cost in high-volume assembly, and accelerates time-to-market compared with discrete designs. Where multiple downstream rails at differing voltages are needed, place a PI3754 near each load zone; current-share between two units if a zone demands more than 60 W.
Được đề xuất
LED Lighting and High-Current Driver Rails
Use the PI3754-00-LGIZ to drive high-brightness LED arrays from 24 V or 48 V bus power with high-frequency PWM dimming downstream. The 60 W output supports long LED strings with constant-current driver stages at the load, and ZVS soft-switching prevents audible switching noise - common in film and stage lighting that demands silent operation. The Vicor SiP's tight thermal envelope and integrated heat-spreading pad simplify mechanical integration into compact luminaire housings.
Được đề xuất
Test and Measurement Equipment Power
Power instruments such as bench supplies, data-acquisition front-ends, and signal generators from a wide-input source that may include battery, AC-adapter rectified DC, or bench DC rails. The PI3754-00-LGIZ's 8 V to 60 V input and high-efficiency ZVS conversion provide clean, regulated rails with minimal EMI leakage into sensitive analog measurement paths. Parallel current-share lets designers scale a single PI3754 design to higher power without redesigning the control loop.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PI3754-00-LGIZ — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PI3740-00-LGIZ | PI3749-00-LGIZ | PI3754-00-LGIZR |
|---|---|---|---|---|
| Brand | Vicor | Vicor | Vicor | Vicor |
| Package | LGA SiP (LGIZ) | LGA SiP (LGIZ) | 108-BLGA Module (LGA SiP) | LGA SiP (LGIZ) |
| Topology | ZVS Buck | ZVS Buck-Boost | ZVS Buck | ZVS Buck |
| Input Voltage Range | 8 V to 60 V | 8 V to 60 V | 8 V to 60 V | 8 V to 60 V |
Bảo phân biệt quan trọng
- ZVS soft-switching versus standard hard-switched buck (vsGeneric 60 W buck regulator from other vendors)
- System-in-Package integration reduces BOM and solution size (vsDiscrete buck controller + external FETs + driver)
- Single-wire current share for parallel operation (vsBuck regulators without built-in current sharing)
Ghi chú thiết kế
Per the Vicor PI3740-00 family datasheet, partition the PCB into distinct analog and power zones separated by a ground-return gap to minimize noise coupling from the high-di/dt power loop into the sensitive feedback/compensation path. Keep the input ceramic capacitors within 2-3 mm of the VIN pins and use vias directly under the LGA thermal pad to spread heat into inner copper layers. Estimated: at 60 W output with 95 percent efficiency, power dissipation is ~3.2 W; a 4-layer board with a 25 x 25 mm copper zone keeps junction rise within the datasheet's thermal derating curve. Always cross-check the exact thermal data from the Vicor datasheet's SOA section.
Estimated: at VIN=48 V, VOUT=24 V, IOUT=2.5 A (60 W), per the PI3740-00 family architecture the converter dissipates roughly 3 W at typical efficiency; with the LGA SiP's thermal resistance to the PCB pad this translates to a 30-40 C junction rise over a 4-layer board thermal pad. Provide at least 25 x 25 mm of 2 oz copper on top and inner layers, stitched with a thermal via array, and avoid placing heat-generating components directly above the SiP. Always verify with the thermal derating curves in the Vicor datasheet and conduct bench measurement.
Use low-ESL/ESR ceramic capacitors (X7R or better) for both the input bulk and the high-frequency bypass near VIN. Per Vicor's design guidance for the PI3740-00 family, observe the minimum output capacitance required for control-loop stability - omitting it can cause subharmonic oscillations at high load steps. If output ripple must be minimized further, add an LC post-filter sized to attenuate the switching node ripple to within the downstream load's tolerance.
Do not hot-plug the input without a controlled pre-charge circuit - the SiP's input bulk capacitance can draw peak currents that damage upstream bus rails or backplane connectors. Per the Vicor datasheet, follow the recommended inrush-control circuit and never exceed the absolute maximum input voltage of 60 V. Also avoid routing digital switching signals across the SiP's analog zone; noise injection into the feedback node can manifest as output voltage jitter.
Thông tin tuân thủ
Compliance statements (RoHS, REACH, lead-free, halogen-free) were not explicitly stated in the retrieved data and are marked 'unknown' per Data Authenticity Rules; verify with Vicor's product compliance documentation before volume order. AEC-Q100 is not applicable for industrial-grade DC-DC SiPs.
