PI3756-00-LGIZ - 200W ZVS Buck-Boost DC-DC Regulator | Vicor
料号： PI3756-00-LGIZ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $28.5 | $28.50 |
| 10 | $26.1 | $261.00 |
| 100 | $23.4 | $2,340.00 |
| 500 | $21.2 | $10,600.00 |
| 1,000 | $19.85 | $19,850.00 |
PI3756-00-LGIZ 概述
A buck-boost regulator is a switched-mode power conversion topology that produces an output voltage either above or below the input rail, allowing designers to power downstream loads from variable or intermediate bus voltages where neither a pure buck nor a pure boost could maintain regulation. Within the broader power conversion taxonomy, the PI3756-00 belongs to the ZVS Buck-Boost family of isolated/non-isolated point-of-load regulators, which itself sits below DC-DC switching regulators and the wider power management IC category. Vicor's Cool-Power ZVS portfolio targets high-density point-of-load applications where PCB area, efficiency, and thermal performance are simultaneously constrained.
Key features of the PI3756-00-LGIZ include a wide 38V-60V input range, 28V-60V adjustable output range, 5A continuous output current capability, integrated ZVS topology for reduced EMI and high efficiency, and a small LGA surface-mount footprint suitable for high-density point-of-load designs. The integration of controller and power switches minimizes external component count, while the ZVS architecture minimizes switching losses and improves thermal performance across the operating range.
Technically, the PI3756-00-LGIZ uses Vicor's proprietary ZVS topology to switch the power MOSFETs at zero voltage, dramatically reducing switching losses and allowing high-frequency operation. The integration of the high-side and low-side switches, the controller, and the support components on a single silicon substrate enables compact layouts and predictable performance. This architecture is well suited to high-current point-of-load applications in 48V nominal distributed power architectures common in telecom, computing, and industrial systems.
Typical applications for this part include 48V point-of-load regulation in telecom and networking equipment, intermediate bus conversion in distributed power systems, industrial 48V rail regulation, high-efficiency LED driver front-end conversion, and battery voltage stabilization in 48V battery-backed systems. Designers typically pair the PI3756-00 with downstream Vicor or third-party point-of-load converters to power FPGAs, processors, ASICs, and high-speed digital ICs.
When designing with this device, follow Vicor's reference layout in the datasheet closely, including the placement of input/output capacitors, the external inductor selection, and the thermal via array beneath the LGA package. Failure to follow the recommended layout can degrade efficiency, increase EMI, and cause thermal shutdown. The 5V VDR bias must be applied before or coincident with VIN to avoid start-up faults.
This page synthesizes distributor pricing, drop-in alternatives within the Vicor Cool-Power ZVS Buck-Boost family, and practical design notes that complement the manufacturer datasheet and are not found on distributor catalog pages.
直接替换替代料： PI3756-00-LGIZ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PI3756-00-LGIZ （相同外形与封装尺寸） ——差异在于 Maximum Output Power, Mounting Type, Package Type, Topology.
快速对比工具——选择替代料号进行并排对比：
PI3755-00-LGIZ
✅ 直接替换📋 参考替代料（不在目录中）
PI3757-00-LGIZ
✅ 直接替换📋 参考替代料（不在目录中）
PI3749-00-LGIZ
✅ 直接替换📋 参考替代料（不在目录中）
PI3756-00-LGIZ-R
✅ 直接替换📋 参考替代料（不在目录中）
PI3754-00-LGIZ
✅ 直接替换✓ 有现货
$16.9 / 个
查看数据手册 →PI3756-00-LGIZ 最大额定值与电气特性
| Manufacturer | Vicor Corporation |
| 功能 | ZVS Buck-Boost Switching Regulator Module |
| 拓扑 | Zero-Voltage Switching (ZVS) Buck-Boost |
| Input Voltage Range (VIN) | 38 V to 60 V |
| Output Voltage Range (VOUT) | 28 V to 60 V |
| 最大输出电流 | 5 A |
| Maximum Output Power | 200 W |
| Bias Supply (VDR) | 5 V (externally applied) |
| 效率 | High efficiency (ZVS topology, see datasheet curves) |
| Package Type | LGA surface-mount module (Cool-Power) |
| 安装类型 | Surface Mount |
| External Components Required | Inductor, resistor divider, capacitors |
PI3756-00-LGIZ lga surface-mount module (cool-power) 引脚配置指南
PI3756-00-LGIZ（lga surface-mount module (cool-power) 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： PI3756-00-LGIZ.
请参阅 数据手册 以查看完整引脚配置。
典型应用
PI3756-00-LGIZ 适用于 6 应用s: 48V Telecom Point-of-Load Regulation, Intermediate Bus Conversion in Distributed Power, Industrial 48V Rail Power Conditioning, High-Efficiency LED Driver Front-End, 48V Battery-Backed System Voltage Stabilization, Computing and Server Power Distribution.
48V Telecom Point-of-Load Regulation
The PI3756-00-LGIZ is engineered for 48V telecom point-of-load applications where a regulated 28V-60V intermediate bus must be derived directly from a 38V-60V telecom backplane. Its 200W output capability and 5A continuous rating allow it to feed downstream Vicor or third-party point-of-load converters powering FPGAs, network processors, and ASICs. The ZVS topology minimizes switching losses at the high VIN-VOUT conversions typical of telecom systems, while the integrated power switches shrink the PCB footprint versus a discrete buck-boost design. Engineers benefit from reduced EMI filter complexity because ZVS inherently produces cleaner switching waveforms than hard-switched topologies at this power level.
推荐
Intermediate Bus Conversion in Distributed Power
In distributed power architectures, the PI3756-00-LGIZ converts a 48V or 54V backplane rail into an isolated or non-isolated intermediate bus for downstream point-of-load converters. The 28V-60V adjustable output lets the designer scale the bus voltage to the optimal level for the downstream PoLs, minimizing overall system losses. ZVS switching supports high conversion efficiency at the large step-down ratios typical of distributed power, reducing heat-sink requirements at the bus converter stage. The compact LGA Cool-Power package allows the bus converter to be placed close to the load, minimizing distribution losses on the intermediate rail.
推荐
Industrial 48V Rail Power Conditioning
Industrial systems running on a 48V nominal bus often require a regulated intermediate rail to power motor drivers, sensor front-ends, and PLC subsystems. The PI3756-00-LGIZ provides a wide 38V-60V input tolerance that handles the wide transients and dips typical of industrial 48V supplies and battery-backed industrial plants. Its 5A/200W output comfortably drives multiple downstream regulators or directly a moderate-power industrial load. The integrated ZVS topology and surface-mount LGA package simplify compliance with industrial EMI standards such as EN 55011/CISPR 11 because ZVS inherently produces lower dV/dt at the switching node.
推荐
High-Efficiency LED Driver Front-End
High-brightness LED arrays in industrial, theatrical, and architectural lighting often require a tightly regulated high-current DC bus. The PI3756-00-LGIZ can be configured as a high-efficiency front-end converter that delivers a stable 28V-60V rail from a 48V supply, feeding downstream constant-current LED driver stages. ZVS switching keeps the front-end efficiency above competing hard-switched designs, reducing thermal stress in the lighting fixture enclosure. The 200W rating covers a wide range of LED array sizes, and the small LGA footprint allows the front-end to be co-located with the LED driver PCBs.
推荐
48V Battery-Backed System Voltage Stabilization
Telecom, datacenter, and industrial battery plants whose voltage ranges from approximately 38V (end-of-discharge) to 60V (float charge) need a regulated bus to power downstream electronics. The PI3756-00-LGIZ accepts the full 38V-60V battery range and produces a regulated 28V-60V output that stays within spec even as the battery discharges or floats. Its 5A/200W continuous rating comfortably powers a complete 48V battery plant's downstream electronics chain. The ZVS topology minimizes quiescent-related losses during low-load conditions that are typical of battery standby operation, extending battery hold-up time during outages.
推荐
Computing and Server Power Distribution
Modern hyperscale and enterprise servers increasingly use 48V direct-to-board distribution to reduce distribution currents relative to legacy 12V systems. The PI3756-00-LGIZ fits naturally into these architectures as a 48V-to-intermediate-bus converter that feeds downstream point-of-load converters powering CPUs, GPUs, memory, and high-speed SERDES. The 5A/200W rating covers the intermediate bus for an entire voltage-rail domain. ZVS switching keeps the EMI profile low enough to meet stringent server EMI limits without bulky filtering, and the small LGA Cool-Power footprint allows the converter to be placed adjacent to the load it serves.
推荐
推荐产品汇总
工程参考数据： PI3756-00-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 | PI3755-00-LGIZ | PI3757-00-LGIZ | PI3749-00-LGIZ | PI3754-00-LGIZ |
|---|---|---|---|---|---|
| Brand | Vicor | Vicor | Vicor | Vicor | Vicor |
| Package | LGA Cool-Power (Vicor) | LGA Cool-Power (Vicor) - same | LGA Cool-Power (Vicor) - same | LGA Cool-Power (Vicor) - same | LGA Cool-Power (Vicor) - same |
| Topology | ZVS Buck-Boost | ZVS Buck-Boost | ZVS Buck-Boost | ZVS Buck-Boost | ZVS Buck-Boost |
| External Bias (VDR) | 5 V required | 5 V required | 5 V required | 5 V required (per family) | 5 V required (per family) |
| Switching Topology | ZVS (soft switching) | ZVS | ZVS | ZVS | ZVS |
关键差异点
- Integrated ZVS controller and power switches in single LGA module （对比 Discrete buck-boost controller + external MOSFETs)
- Wide 38V-60V input tolerance for 48V telecom and battery plant rails （对比 PI3749-00-LGIZ)
- 5A continuous output current at 200W in Cool-Power LGA （对比 PI3755-00-LGIZ)
设计说明
Follow Vicor's reference PCB layout in the PI3756-00 datasheet exactly, especially the placement of input and output capacitors directly at the VIN/VOUT pads and the thermal via array under the LGA package. ZVS switching is sensitive to stray inductance in the power path; deviating from the recommended layout typically degrades efficiency, increases EMI, and can cause thermal shutdown at full 5A load. Use a minimum 4-layer PCB with a continuous ground plane beneath the module and substantial copper pour on the top layer for thermal dissipation.
Apply the external 5V VDR bias at or before VIN is applied to avoid start-up faults. A small 5V LDO (e.g. a 100mA part) powered from the same 48V rail is the typical bias source. Add a 1uF ceramic decoupling capacitor directly at the VDR pin with a short, wide trace to the module. Estimated: typical VDR bias current is on the order of tens of mA per the family datasheet; verify against the latest datasheet revision before final design.
At full 5A/200W output with a typical 48V-to-48V conversion, the module dissipates 10-20W depending on efficiency. The LGA Cool-Power package requires substantial PCB copper pour (typically >1 square inch of 2oz copper on top and inner layers) to keep the junction temperature within the operating range. For applications where natural convection is the only cooling path, derate to 3-4A continuous output. Forced-air cooling or a heat-spreader allows operation at full 5A/200W.
Common pitfalls include omitting the VDR bias capacitor, using an undersized external inductor (follow the datasheet's recommended inductor value and saturation current rating of at least 7-8A), selecting feedback resistors with poor tolerance (use 1% or better), and ignoring the maximum VIN transient rating when designing for hot-plug 48V bus applications. Always add upstream TVS or hot-swap protection rated for 60V continuous / 80V transient on the VIN rail.
合规信息
Compliance information not present in verified web data; consult Vicor product page and latest datasheet for RoHS/REACH/lead-free status. AEC-Q100 not applicable for non-automotive DC-DC regulator modules.
