PI3755-01-LGIZ - 38-60V ZVS Buck-Boost 160W | Vicor
料号： PI3755-01-LGIZ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $75 | $75.00 |
| 10 | $70.5 | $705.00 |
| 100 | $65.25 | $6,525.00 |
| 500 | $60 | $30,000.00 |
| 1,000 | $56.5 | $56,500.00 |
PI3755-01-LGIZ 概述
A buck-boost regulator is a non-isolated DC-DC converter that can step an input voltage either up (boost) or down (buck) to produce a regulated output that may sit above, below, or equal to the input rail. Within the broader hierarchy of DC-DC converters -> switching regulators -> power management ICs (PMICs) -> semiconductors, the PI3755-01 sits alongside Vicor's larger family of ZVS buck, boost, and buck-boost regulators designed for point-of-load and intermediate bus conversion in distributed power architectures.
Key features include Vicor's proprietary Zero-Voltage Switching (ZVS) architecture, which enables high-frequency operation while minimizing switching losses and maximizing efficiency. The ZVS topology sustains high switching frequency up to the rated input voltage, reduces the size of external filtering components, improves power density, and enables very fast dynamic response to line and load transients. Compared with conventional hard-switched converters, the soft-switching behavior of the PI3755-01 keeps switching-related EMI lower and efficiency higher across the operating range.
The PI3755-01 is part of the PI37xx Cool-Power ZVS regulator family, all of which use the same System-in-Package building blocks. The high integration, tight control loop, and high switching frequency make the part well-suited to applications that demand compact point-of-load conversion in telecom, industrial, and high-density computing environments where intermediate 48 V bus distribution is common and 12 V/24 V/36 V loads need efficient conversion.
Typical applications include 48 V telecom intermediate bus conversion, industrial 48 V robotics and motor drives, high-end computing and graphics-card auxiliary rails, and distributed power architectures stepping 48 V down to 24 V or 12 V. Designers typically place the PI3755-01 directly at the load to take advantage of its high power density and fast transient response.
A key design consideration is thermal management: although the SiP is highly integrated, dissipating up to ~36 W of loss at full 160 W load still requires a substantial PCB copper pour or heatsink to keep the LGA junction-to-ambient thermal resistance within the datasheet limits.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.
直接替换替代料： PI3755-01-LGIZ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
PI3755-02-LGIZ
✅ 直接替换📋 参考替代料（不在目录中）
PI3755-01
✅ 直接替换📋 参考替代料（不在目录中）
PI3755-01-LGIZ
✅ 直接替换✓ 有现货
$56.5 / 个
查看数据手册 →PI3755-01-LGIZ 最大额定值与电气特性
| 拓扑 | Buck-Boost (non-isolated) |
| Switching Architecture | ZVS (Zero-Voltage Switching) |
| 输入电压范围 | 38 V to 60 V |
| Output Power (Continuous) | 160 W |
| Output Power (Datasheet Figure) | 124.2 W |
| 输出电压 | Adjustable (Positive) |
| 输出数量 | 1 |
| 封装 | LGA-71 (71-BLGA Module, SiP) |
| 安装类型 | Surface Mount |
| Integrated Components | Controller + power switches + support passives (SiP) |
| External Components Required | Inductor + minimal ceramic capacitors |
| Product Family | Cool-Power PI37xx ZVS Buck-Boost |
| Module Type | DC-DC Regulated Power Supply Module (Hybrid) |
| Operating Mode | High-frequency ZVS switching |
| RoHS 状态 | Compliant (per Vicor product page) |
| Lead Free | Yes |
PI3755-01-LGIZ lga-71 (71-blga module, sip) 引脚配置指南
PI3755-01-LGIZ（lga-71 (71-blga module, sip) 封装）的引脚配置。 该功率器件具有栅极、漏极和源极端子。对于无极性封装，请参阅制造商数据手册以了解确切的引脚 1 方向和封装尺寸细节。常见应用包括电源设计、电机驱动和负载开关。
暂无详细引脚数据： PI3755-01-LGIZ.
请参阅 数据手册 以查看完整引脚配置。
典型应用
PI3755-01-LGIZ 适用于 7 应用s: 48 V Telecom Intermediate Bus Conversion, Industrial 48 V Robotics and Motor Drives, High-Density Computing and Graphics Card Auxiliary Rails, Distributed Power Architecture 48 V to 24 V/12 V, LED Lighting and High-Power Stage Lighting, Battery Energy Storage and 48 V E-Bike / E-Mobility Auxiliary Rails, Test and Measurement Bench Power.
48 V Telecom Intermediate Bus Conversion
The PI3755-01-LGIZ is purpose-built for stepping a 48 V telecom bus to a regulated load rail with 160 W of continuous power. Its 38 V to 60 V input window exactly covers the ETSI/ATIS telecom nominal 48 V bus including transient excursions, and its ZVS buck-boost topology lets the output sit above or below the input for flexible system design. Placed directly on the system board, the SiP replaces a discrete buck-plus-boost cascade, reduces BOM count by integrating the controller and power switches, and enables higher power density than 48 V to 12 V discrete solutions in the same footprint.
推荐
Industrial 48 V Robotics and Motor Drives
Industrial robotics and 48 V servo drives need compact, high-efficiency conversion from a 48 V factory bus to motor-rail voltages such as 24 V, 36 V, or 12 V. The PI3755-01-LGIZ's 160 W continuous rating and ZVS high-frequency operation allow it to drive a downstream motor driver or sensor cluster with low EMI and fast transient response. The 71-LGA SiP mounts directly to a PCB with the exposed thermal pad conducting heat to a copper pour, removing the need for an external heatsink in moderate-power designs and saving significant volume in space-constrained robotic joints.
推荐
High-Density Computing and Graphics Card Auxiliary Rails
Modern GPUs and AI accelerators require auxiliary rails beyond the main 12 V input, often drawing 100 W to 200 W with strict noise and transient budgets. The PI3755-01-LGIZ delivers 160 W of clean, ZVS-switched power from a 48 V intermediate bus, with high switching frequency that minimizes output ripple and enables fast load-step response. The 71-LGA SiP allows placement directly under or beside the GPU on the same board, dramatically reducing distribution losses versus running 12 V at high current across long PCB traces in dense compute cards.
推荐
Distributed Power Architecture 48 V to 24 V/12 V
Distributed power architectures (DPA) replace centralized silver-box power supplies with bus converters and POL regulators near each load. The PI3755-01-LGIZ acts as a 48 V to 24 V (or 12 V) bus-converter or POL stage, supplying downstream sub-rails from a regulated intermediate. Its 160 W continuous rating and ZVS topology improve end-to-end efficiency versus conventional hard-switched buck converters, while the high-density 71-LGA SiP shrinks the converter footprint to allow more compute, storage, or radio content in the same chassis.
推荐
LED Lighting and High-Power Stage Lighting
Architectural LED lighting and stage fixtures are increasingly powered from 48 V or 54 V constant-voltage distribution for thinner copper and lower I^2R loss. The PI3755-01-LGIZ can step that 48 V bus to the 24 V or 36 V string voltage required by high-power LED arrays, delivering 160 W of clean power with ZVS switching that keeps EMI low enough to coexist with DMX and wireless DMX receivers. The compact 71-LGA SiP can be embedded inside a slim fixture housing without the bulk of a discrete buck-boost design.
推荐
Battery Energy Storage and 48 V E-Bike / E-Mobility Auxiliary Rails
Battery energy storage systems (BESS) and 48 V e-mobility platforms (e-bikes, light electric vehicles, mobile robotics) need efficient conversion from the pack nominal voltage to 12 V, 24 V, or 36 V auxiliary rails. The PI3755-01-LGIZ's 38 V to 60 V input spans the typical 48 V nominal Li-ion pack range, and the ZVS buck-boost topology holds regulation across pack state-of-charge swings. With 160 W of continuous output, the module can drive headlights, displays, sensors, and motor controllers from a single high-density SiP, reducing weight and BOM versus a discrete buck-boost PCB.
推荐
Test and Measurement Bench Power
Bench-top and rack-mounted test instrumentation (ATE, parametric testers, semiconductor test equipment) often runs from a 48 V internal DC bus and needs clean, programmable auxiliary rails. The PI3755-01-LGIZ provides 160 W of low-EMI, fast-transient power to analog front-ends, DAC reference circuits, or motor-control DUT cards. The 71-LGA SiP integrates the controller and power switches, simplifying the safety/EMI design loop and allowing more channels per rack unit than a discrete buck-boost solution.
推荐
推荐产品汇总
工程参考数据： PI3755-01-LGIZ ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PI3755-02-LGIZ | PI3755-01 | PI3755-01-LGIZ |
|---|---|---|---|---|
| Brand | Vicor | Vicor | Vicor | Vicor |
| Package | LGA-71 (71-BLGA Module, SiP) | LGA-71 (71-BLGA Module, SiP) - same | LGA-71 (71-BLGA Module, SiP) - same | LGA-71 (71-BLGA Module, SiP) - same |
| Input Voltage Range | 38 V to 60 V | 38 V to 60 V | 38 V to 60 V | 38 V to 60 V |
| Output Power (Continuous) | 160 W | 160 W | 160 W | 160 W |
| Topology | ZVS Buck-Boost | ZVS Buck-Boost | ZVS Buck-Boost | ZVS Buck-Boost |
| Output Polarity | Positive Adjustable | Positive Adjustable | Positive Adjustable | Positive Adjustable |
| Integration Level | Controller + switches + passives (SiP) | Controller + switches + passives (SiP) | Controller + switches + passives (SiP) | Controller + switches + passives (SiP) |
| Mounting Type | Surface Mount (LGA land pads) | Surface Mount (LGA land pads) | Surface Mount (LGA land pads) | Surface Mount (LGA land pads) |
| RoHS Status | Compliant | Compliant | Compliant | Compliant |
关键差异点
- Highest integration in its power class - controller, switches, and passives in one 71-LGA SiP （对比 PI3755-02-LGIZ)
- ZVS switching enables high frequency without the usual switching-loss penalty （对比 PI3749-00-LGIZ)
- External-inductor architecture preserves efficiency at 160 W without discrete heatsinks （对比 PI3755-01)
设计说明
Estimated: at 160 W output with ~85% efficiency, the PI3755-01-LGIZ dissipates roughly 28 W of loss. The 71-LGA SiP must be soldered to a substantial copper pour on the PCB; Vicor's family overview recommends an unbroken top-layer copper pad plus thermal vias to inner planes. Without adequate copper, the junction can exceed safe limits at full load - design with at least 1 oz copper and a continuous ground/thermal flood under the LGA footprint.
Per Vicor's PI37xx family overview, the PI3755-01 requires only an external inductor and a minimal number of ceramic capacitors. Place the external inductor and input/output ceramic capacitors as close to the LGA pads as possible to minimize loop area. Keep the input return and output return paths short and direct, and provide a continuous ground pour on at least one inner layer for return currents and thermal spreading.
Do not operate below the 38 V minimum input - the ZVS timing margin erodes and efficiency drops sharply near the input floor. Verify the inductor saturation current is rated above the peak inductor current at full load and minimum input. The SiP must be reflowed with a profile matched to the LGA land-pad geometry; excessive peak temperature or long time-above-liquidus will damage the internal die and void the warranty.
合规信息
RoHS and lead-free status per Vicor product page. AEC-Q100 not applicable (industrial/telecom SiP, not automotive qualified). REACH, halogen-free, and conflict-minerals status not explicitly stated in the verified web data and marked unknown - request the manufacturer's full compliance statement for definitive values.
