FDMF5068 - 25V 70A 3-Phase Smart Power Stage | onsemi
MPN： FDMF5068 ✓ 啟用中FDMF5068 概覽
A Smart Power Stage, or SPS, is an integrated power-conversion building block that places driver circuitry, switching devices, and sensing functions in one package. In the power-management hierarchy, an SPS sits below a multi-phase DC-DC converter and above discrete gate drivers and MOSFETs. Its purpose is to simplify high-current converter design while improving switching performance, layout integration, and system-level monitoring.
The verified product information identifies three integrated MOSFET phases, a 25 V rating, and a 70 A class power stage. These characteristics make the FDMF5068 relevant to compact, high-current multiphase converters that require integrated current and temperature sensors. Its monitoring functions can support converter control, fault detection, and protection strategies, although exact threshold, accuracy, timing, and electrical-limit details must be confirmed in the manufacturer datasheet.
The 39-pin PowerVQFN package supports a compact surface-mount implementation. Its exact dimensions, exposed-pad arrangement, pin names, pin numbering, and thermal data are not available in the supplied search snippets, so the package drawing and complete pin assignment should be verified before layout. The same caution applies to input capacitance, switching frequency limits, dead-time behavior, gate-drive details, current-sense transfer function, and protection thresholds.
Typical use cases include synchronous multiphase buck converters, high-current processor and accelerator power systems, computing equipment, and other compact power-conversion platforms where integrated monitoring and a three-phase power stage can reduce external component count. Application suitability depends on the final converter requirements rather than the 70 A class designation alone.
For design implementation, follow the onsemi datasheet land pattern and recommended high-current PCB layout. Keep power-loop paths short, provide adequate copper and thermal relief, validate decoupling according to the recommended network, and confirm that the selected inductor and switching frequency satisfy the converter design. This page combines verified product identity, sourcing information, technical context, and selection guidance; detailed application claims should be validated against the complete manufacturer documentation.
The FDMF5068 is intended for engineers designing compact, monitored, high-current synchronous buck systems. DigiKey, Mouser, Arrow, Newark, Octopart, and onsemi are listed as available information and purchasing sources in the verified data, while lifecycle, price, stock, and lead time should be checked at the time of quotation.
直接替換替代品，適用於 FDMF5068 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此產品無可直接替換的替代品。
申請替代品FDMF5068 最大額定值與電氣特性
| Product Type | Three-phase Smart Power Stage module |
| Phase Count | 3 phases |
| Voltage Rating | 25 V |
| Current Rating | 70 A |
| Integrated Switching Devices | Integrated MOSFETs |
| Control Architecture | Synchronous buck DC-DC converter power stage |
| Current Monitoring | Integrated current sensing |
| Temperature Monitoring | Integrated temperature sensing |
| Driver Integration | Integrated driver IC |
| 封裝 | 39-pin PowerVQFN |
| 安裝類型 | Surface mount |
| Application Class | High-current, high-frequency synchronous buck DC-DC converters |
FDMF5068 39-pin powervqfn 腳位配置指南
FDMF5068（39-pin powervqfn 封裝）的腳位配置。 此功率元件具有閘極、汲極與源極端子。對於非極性封裝，請參閱製造商資料表以取得確切的第 1 腳方向與佈局詳細資訊。常見應用包括電源設計、馬達驅動與負載切換。
無詳細腳位定義資料： FDMF5068.
請參閱 資料表 以查看完整腳位配置。
典型應用
FDMF5068 適用於 6 應用s: High-Current Multiphase Buck Converter, Processor and Accelerator Power Rails, High-Frequency Synchronous Conversion, High-Current Computing Power Conversion, Compact Power-Supply Module, Industrial High-Current Power Conversion.
High-Current Multiphase Buck Converter
The FDMF5068 fits the power stage of a compact three-phase synchronous buck converter where integrated MOSFETs, driver functionality, current sensing, and temperature sensing can reduce external circuitry. Its verified 25 V and 70 A class identify the intended high-current power-conversion class, while the 39-pin PowerVQFN supports a surface-mount implementation. The converter designer must still confirm input range, phase current limits, switching frequency, inductor selection, dead time, fault behavior, and thermal derating from the complete datasheet before layout approval.
推薦
Processor and Accelerator Power Rails
The integrated three-phase architecture makes FDMF5068 relevant to compact processor and accelerator power rails requiring high current density and monitoring. Its verified current and temperature sensors may help a controller observe power-stage conditions, while the integrated MOSFETs can reduce the number of separately placed switching elements. Selection still requires matching the actual converter input voltage, transient target, current limit, switching frequency, control method, and thermal environment; those parameters are not supplied in the verified search data.
推薦
High-Frequency Synchronous Conversion
onsemi positions FDMF5068 for high-current, high-frequency synchronous buck conversion, where integrated driver and MOSFET elements can support compact power-loop layouts. The module is attractive when switching-node losses and external driver count are important design concerns. Designers should verify the exact switching-frequency limits, gate-drive characteristics, bootstrap requirements, propagation delays, and layout recommendations before assuming that the module is suitable for a particular controller. The advertised 70 A class is not a substitute for a complete efficiency and thermal analysis.
推薦
High-Current Computing Power Conversion
FDMF5068 can be considered in compact computing equipment that needs a high-density power stage with integrated current and temperature monitoring. The 39-pin PowerVQFN is intended for a surface-mount design, and the three-phase arrangement can distribute power conversion across multiple integrated phases. A successful implementation depends on controller compatibility, power-stage current sharing, current-sense calibration, fault handling, exposed-pad layout, and adequate cooling. No specific computing platform is verified in the supplied data, so these points require application-level validation.
推薦
Compact Power-Supply Module
The FDMF5068 is suitable for evaluation inside a compact, monitored power-supply module when the system uses a compatible three-phase synchronous buck topology. Integrating the MOSFETs and driver IC can reduce external part count and simplify the power-stage footprint, while current and temperature sensors support supervisory functions. The module still requires careful input filtering, output filtering, layout symmetry, thermal management, and fault-response validation. The verified data does not provide output-voltage programming, efficiency curves, or thermal resistance.
推薦
Industrial High-Current Power Conversion
FDMF5068 can be evaluated in industrial power-conversion equipment where compactness, integrated monitoring, and high-current switching are useful. The verified product description identifies a 25 V, 70 A three-phase Smart Power Stage with integrated MOSFETs and current and temperature sensors, which can reduce the external discrete power-stage count. Industrial suitability cannot be concluded from those ratings alone: environmental limits, isolation requirements, EMI performance, component derating, and functional-safety needs must be checked separately. Use the manufacturer datasheet and application notes before release.
推薦
推薦產品摘要
工程參考資料，適用於 FDMF5068 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Package | 39-pin PowerVQFN |
| Brand | onsemi |
| Product Type | Three-phase Smart Power Stage module |
| Phase Count | 3 phases |
| Voltage Rating | 25 V |
| Current Rating | 70 A |
| Integrated Monitoring | Current sensing and temperature sensing |
| Power Conversion Role | High-current, high-frequency synchronous buck DC-DC converter |
| Switching Devices | Integrated MOSFETs |
主要差異化特點
- Integrated three-phase Smart Power Stage architecture (對比Generic discrete MOSFET power stage)
- Integrated monitoring (對比Unmonitored power-driver module)
- High-current power-conversion positioning (對比Lower-current Smart Power Stage)
- Compact integration (對比Separate driver and MOSFET solution)
設計說明
Estimated: the FDMF5068 must be thermally analyzed at the actual switching frequency, phase current, duty cycle, ambient temperature, and PCB copper area because those values are not supplied in the verified search data. Calculate conduction loss from MOSFET on-resistance and switching loss from device transition data after obtaining the datasheet, then verify junction temperature using the manufacturer thermal model. Do not assume that the 70 A rating permits continuous 70 A operation without derating.
Use the onsemi recommended PowerVQFN land pattern and keep the high-current input, switching, and power-ground loops as short and compact as practical. Preserve the exposed-pad and thermal-via arrangement specified by the manufacturer, maintain symmetrical high-current routing, and place required input and bootstrap capacitors close to their associated pins. Because the complete pinout is unavailable in the supplied data, do not finalize placement until the official package drawing and datasheet are reviewed.
The verified identity supports a 25 V, three-phase, 70 A class synchronous buck stage, but the actual converter operating points must remain within the complete datasheet limits. Verify input-voltage range, phase current sharing, current-sense behavior, switching frequency, dead time, bootstrap voltage, fault thresholds, and output-filter requirements before layout. Controller selection should be based on confirmed compatibility rather than the generic fact that another converter is a multiphase controller.
Do not treat a generic 25 V or 70 A Smart Power Stage as a drop-in replacement. A valid replacement must match the 39-pin PowerVQFN footprint, pinout, phase connections, sensing interfaces, control timing, protection behavior, and thermal characteristics. Also do not infer RoHS, REACH, automotive, lifecycle, or lead-free status from distributor listings. Confirm those items using current manufacturer documentation and authorized sourcing records.
合規資訊
The supplied search snippets do not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive-qualification information. Confirm current compliance declarations with onsemi or an authorized distributor.
