PI3753-50-LGIZ - 50V ZVS Buck-Boost Regulator | Vicor
料号： PI3753-50-LGIZ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.8 | $168.00 |
| 100 | $14.95 | $1,495.00 |
| 500 | $13.2 | $6,600.00 |
| 1,000 | $11.65 | $11,650.00 |
PI3753-50-LGIZ 概述
A ZVS buck-boost regulator is a type of DC-DC switching converter that uses zero-voltage switching to minimize switching losses and electromagnetic interference. It can step the input voltage up or down (buck-boost topology), making it suitable for systems where the input rail varies above and below the required output. Within the broader power converter hierarchy, ZVS buck-boost regulators sit between traditional hard-switched buck converters and isolated DC-DC modules, offering higher efficiency than PWM regulators while supporting bidirectional voltage conversion.
Key features include ZVS switching for high efficiency across the load range, integrated controller + power switches + passive support components, wide input voltage operation, small LGA land-grid-array package for high power density, and minimal external component count. The integrated topology allows designers to achieve power conversion with only input/output capacitors and feedback components external to the module.
The PI3753 architecture uses Vicor's proprietary ZVS topology with adaptive dead-time control, achieving soft-switching across the operating range. This topology reduces switching losses compared to traditional hard-switched buck/boost converters and enables high-frequency operation, which shrinks the required inductor and capacitor energy storage. Integrated power MOSFETs and the controller reduce loop-area parasitics and improve transient response.
Typical applications include distributed power architectures, point-of-load regulation, telecom and networking equipment, industrial automation systems, battery-powered portable devices, and high-density computing platforms. The wide input range makes the part well-suited for 24V industrial buses and 48V telecom rails where the input may vary significantly.
When designing with this part, ensure that the input and output capacitors meet the datasheet ESR and ripple-current ratings; insufficient decoupling can cause instability. Adequate thermal management is also critical - although the module integrates the switches, total power dissipation scales with (VIN - VOUT) * IOUT at low VIN, so thermal copper must be sized accordingly.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet to help engineers evaluate and apply the PI3753-50-LGIZ quickly.
直接替换替代料： PI3753-50-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：
PI3753-00-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）
PI3751-00-LGIZ
✅ 直接替换📋 参考替代料（不在目录中）
PI3740-00-LGIZ
✅ 直接替换📋 参考替代料（不在目录中）
PI3753-50-LGIZ 最大额定值与电气特性
| 拓扑 | ZVS Buck-Boost (non-isolated) |
| 功能 | Step-up / step-down DC-DC switching regulator |
| 输出电压 | 50 V (fixed, per -50 suffix) |
| Switching Type | ZVS (zero-voltage switching) |
| Integrated Components | Controller + power switches + support components |
| 输出类型 | Fixed |
| 输出数量 | 1 |
| 封装 / 外壳 | LGA surface-mount module |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant (lead-free per Alibaba listing) |
| Series | Picor PI3753 |
| Manufacturer | Vicor Corporation |
PI3753-50-LGIZ lga surface-mount module 引脚配置指南
PI3753-50-LGIZ（lga surface-mount module 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： PI3753-50-LGIZ.
请参阅 数据手册 以查看完整引脚配置。
典型应用
PI3753-50-LGIZ 适用于 6 应用s: Telecom 48 V Point-of-Load Regulation, Industrial 24 V Bus Power Conversion, Distributed Power Architecture (DPA) Intermediate Bus, Battery-Powered Portable Equipment, Test and Measurement Equipment, LED Driver High-Voltage Rails.
Telecom 48 V Point-of-Load Regulation
The PI3753-50-LGIZ steps the 36-72 V telecom bus down to a regulated 50 V intermediate rail for downstream POL converters in line cards. Its ZVS buck-boost topology tolerates input transients during hot-swap and OR-ing events, while the integrated controller and MOSFETs eliminate external switch layout parasitics. With high switching frequency and small footprint, the part fits dense line-card designs where board area is at a premium.
推荐
Industrial 24 V Bus Power Conversion
In 24 V industrial automation systems, the PI3753-50-LGIZ provides a regulated 50 V rail for sensor excitation, motor drivers, or isolation-barrier drivers. The ZVS buck-boost topology allows operation across the 18-36 V industrial input range, while the integrated design reduces component count and BOM cost. Its LGA package supports surface-mount assembly suitable for high-volume industrial manufacturing.
推荐
Distributed Power Architecture (DPA) Intermediate Bus
As an intermediate bus converter stepping 48 V to 50 V for downstream POL regulators, the PI3753-50-LGIZ delivers high efficiency thanks to ZVS switching, reducing total system power loss. The wide input range handles the variable voltage common on DPA buses, and the small LGA footprint allows placing the converter close to the load for better transient response. This topology is preferred in data-center and high-performance computing power trees.
推荐
Battery-Powered Portable Equipment
In battery-discharge applications where the battery voltage can be above or below the required 50 V rail, the PI3753-50-LGIZ buck-boost topology maintains regulation across the entire discharge curve, maximizing usable battery capacity. ZVS switching delivers high efficiency to extend runtime, and the small LGA footprint suits space-constrained portable designs. Integrated switches reduce external parts count for compact assemblies.
推荐
Test and Measurement Equipment
Bench-top and ATE power rails often require precise, low-noise 50 V supplies generated from a wide-range DC source. The PI3753-50-LGIZ's ZVS switching produces low EMI and clean output, while the integrated controller simplifies compliance with measurement-instrument EMI standards. The buck-boost capability accepts bench supplies from 12 V up to 50 V, providing flexibility for lab use.
推荐
LED Driver High-Voltage Rails
High-brightness LED drivers often require a stable 50 V supply for series LED strings. The PI3753-50-LGIZ can accept a variable input source - including battery stacks - and produce a regulated 50 V rail that drives constant-current LED controllers. The ZVS topology's high efficiency reduces thermal stress in enclosed lighting fixtures, and the integrated design simplifies mechanical packaging.
推荐
推荐产品汇总
工程参考数据： PI3753-50-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 | PI3753-00-LGIZ | PI3749-00-LGIZ | PI3751-00-LGIZ |
|---|---|---|---|---|
| Brand | Vicor | Vicor | Vicor | Vicor |
| Package | LGA surface-mount module | LGA surface-mount module - same | LGA surface-mount module - same | LGA surface-mount module - same |
| Topology | ZVS Buck-Boost | ZVS Buck-Boost | ZVS Buck-Boost | ZVS Buck-Boost |
| Integrated Switches | Yes | Yes | Yes | Yes |
| Series / Family | Picor PI3753 | Picor PI3753 | Picor PI3749 | Picor PI3751 |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| RoHS / Lead-Free | Yes | Yes | Yes | Yes |
关键差异点
- ZVS switching for high efficiency across load range （对比 PI3753-00-LGIZ)
- Integrated controller + power MOSFETs + support components （对比 Discrete buck-boost designs using TI LM5118 or ADI LT8390)
- Wide input range ZVS buck-boost topology （对比 Pure buck or pure boost regulators)
设计说明
Estimated: at 24 V input and 50 V / 1 A output, the PI3753-50-LGIZ's buck-boost topology dissipates roughly (VIN - VOUT) * IOUT + VOUT * IOUT * (1 - efficiency). Although Vicor's ZVS switching keeps efficiency high, continuous operation at maximum load still requires thermal copper pours or external heatsinking. Mount on a minimum 1 square inch of 2 oz copper and ensure airflow if used in enclosed industrial enclosures.
Place input and output ceramic capacitors as close as possible to the LGA power pads to minimize high-frequency loop inductance. The ZVS switching node is sensitive to parasitic inductance; keep input loop area below 0.5 square cm. Use 4-layer PCB with a dedicated ground plane under the module and stitch vias around the LGA perimeter for thermal and EMI performance.
Do not exceed the absolute maximum input voltage specified in the PI3753 datasheet; transient suppression is required on hot-plug 48 V telecom feeds. Avoid using the PI3753-50-LGIZ with output voltages that violate the LGA pad current rating - if higher output current is needed, consider the higher-power Vicor Picor family members. Always verify output ripple with the actual capacitor ESR/ESL combination before finalizing the BOM.
合规信息
RoHS and lead-free compliance confirmed via Alibaba distributor listing and Vicor's product family policy. Halogen-free status and conflict-mineral declaration require direct inquiry to Vicor. AEC-Q100 not applicable - this is a non-automotive industrial/commercial DC-DC module.
