ISL8282MFRZ-T1 - 15A PMBus Step-Down Power Module | Renesas
MPN： ISL8282MFRZ-T1 ✓ 啟用中ISL8282MFRZ-T1 概覽
A point-of-load (PoL) DC/DC power module is a device that integrates a switching regulator controller, power MOSFETs, inductor, and most passive components into a single encapsulated package. Within the power management hierarchy, it sits above discrete converters and below complete power supplies, dramatically reducing external component count, design complexity, and board area while guaranteeing optimized internal layout for switching performance.
Key features of the ISL8282M include up to 95% peak conversion efficiency, digital PMBus/SMBus control and telemetry for output voltage adjustment, sequencing, margining, and monitoring, plus integrated LDOs that power internal circuitry. The proprietary Renesas R4 Technology control architecture provides fast transient response and stable operation across the full 0.5V to 5V output range.
Technically, the hybrid digital architecture combines a digital control loop with integrated power stage magnetics in the HDA package, achieving high power density suitable for space-constrained boards. Fully encapsulated construction protects against moisture and mechanical stress, and the thermally enhanced substrate conducts heat to the PCB for convection cooling without a heatsink at moderate loads.
Typical applications include FPGA and ASIC core power rails in networking switches, data-center and server line cards, industrial automation controllers, and wireless infrastructure equipment where digital power telemetry via PMBus is required.
For design, ensure adequate copper area under the module thermal pad to keep junction temperature within limits at high load, and follow the datasheet-recommended external capacitor values for input and output stability.
This page synthesizes distributor pricing, verified alternatives, and practical design guidance not found in the manufacturer datasheet alone.
直接替換替代品，適用於 ISL8282MFRZ-T1 — 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。
此系列的變體
與下列產品可直接替換的同系列型號： ISL8282MFRZ-T1 （相同外形與佔位） — 差異在於 Mounting Type, Topology, Control Type, Digital Interface, Integrated Features.
ISL8281MFRZ-T1
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ISL8282MFRZ-T1 最大額定值與電氣特性
| 拓撲 | Non-Isolated PoL Step-Down (Buck) Module |
| Control Type | Digital (PMBus enabled), Renesas R4 Technology |
| 輸出數量 | 1 |
| 輸入電壓範圍 | 4.5 V to 16.5 V |
| 輸出電壓範圍 | 0.5 V to 5 V |
| 最大輸出電流 | 15 A continuous |
| Peak Efficiency | up to 95% |
| Digital Interface | PMBus |
| Integrated LDOs | Yes (internal bias supply) |
| 封裝 | HDA-83 (12 x 11 x 5.3 mm), fully encapsulated |
| 安裝類型 | Surface Mount |
| Package Height | 5.3 mm |
| Package Dimensions | 12 mm x 11 mm |
ISL8282MFRZ-T1 12 mm x 11 mm 腳位配置指南
ISL8282MFRZ-T1（12 mm x 11 mm 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： ISL8282MFRZ-T1.
請參閱 資料表 以查看完整腳位配置。
安全工作區 (Estimated - output current derating)
典型應用
ISL8282MFRZ-T1 適用於 6 應用s: FPGA Core Power Supply, Networking Switch and Router Line Cards, Data-Center Server Power, Industrial Automation Controllers, Wireless Infrastructure Equipment, ASIC and Processor Point-of-Load.
FPGA Core Power Supply
The ISL8282MFRZ-T1 is well suited to FPGA core (VCCINT/VCCBRAM) power rails because FPGAs demand high current at low voltages with tight tolerance and fast transient response. With a 0.5V to 5V adjustable output and 15A continuous current, a single module can supply up to 75W, covering most mid-range FPGA core requirements from a 12V intermediate bus. The Renesas R4 Technology digital control loop provides rapid response to load steps, and PMBus telemetry allows the host to monitor voltage and current in real time. Designers should size PCB copper under the thermal pad for the worst-case 15A load and use the PMBus interface for sequencing relative to I/O banks.
推薦
Networking Switch and Router Line Cards
Line cards in enterprise and data-center switches use 12V intermediate bus architectures feeding multiple point-of-load converters. The ISL8282M's 4.5V to 16.5V input range accepts the 12V bus directly, while its PMBus/SMBus interface integrates with the chassis power-management controller for voltage margining, fault logging, and telemetry-based predictive maintenance. The compact 12 mm x 11 mm x 5.3 mm HDA-83 footprint suits the tight vertical spacing of line-card designs, and up to 95% efficiency reduces the total airflow and heatsinking budget across a card populated with multiple modules.
推薦
Data-Center Server Power
Server boards require dense, digitally managed PoL conversion for CPUs, ASICs, and memory subsystems. The ISL8282MFRZ-T1 provides 15A continuous output with digital telemetry, enabling the BMC to monitor rail health through PMBus and log faults during operation. Its high power density - 75W capability in a 132 mm2 footprint - helps meet aggressive board-space targets, and the fully encapsulated HDA construction withstands reflow and vibration in high-reliability server environments. Multi-rail sequencing via PMBus simplifies bring-up of complex processor power trees.
推薦
Industrial Automation Controllers
Industrial PLCs, motor-control boards, and I/O modules commonly run from 24V systems scaled down to 12V intermediates; the ISL8282M converts that 12V rail to the 5V or lower logic supplies required by processors and sensors. The wide 4.5V to 16.5V input tolerates bus transients common in factory environments, and PMBus configuration allows one firmware image to set different output voltages across product variants, reducing BOM diversity. Encapsulated packaging adds robustness against dust and humidity encountered in industrial cabinets, supporting long-term reliability targets.
推薦
Wireless Infrastructure Equipment
Baseband units and remote radio equipment rely on high-efficiency PoL conversion to minimize thermal load in sealed outdoor enclosures. The ISL8282M's up to 95% efficiency reduces wasted heat, directly lowering cooling requirements for passively cooled outdoor units. The PMBus interface supports remote monitoring of rail voltage, current, and temperature from the system controller, enabling predictive maintenance of tower-mounted equipment where site visits are costly. The 12 mm x 11 mm footprint conserves PCB area in dense radio modems.
推薦
ASIC and Processor Point-of-Load
Custom ASICs and embedded processors require tightly regulated sub-1V to 5V rails with dynamic voltage scaling. The ISL8282M covers the full 0.5V to 5V output range and supports PMBus-commanded output voltage changes, enabling DVFS power-saving schemes without external DAC circuitry. The integrated LDOs for internal bias reduce external component count, and the R4 digital control maintains stability across output setpoint changes. Designers should validate transient response at their specific load profile using the datasheet evaluation guidelines.
推薦
推薦產品摘要
工程參考資料，適用於 ISL8282MFRZ-T1 — 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 | ISL8281MFRZ-T1 |
|---|---|---|
| Package | HDA-83 (12 x 11 x 5.3 mm) | HDA-83 (12 x 11 x 5.3 mm) - same |
| Brand | Renesas Electronics | Renesas Electronics - same |
| Maximum Output Current | 15 A | 10 A |
| PMBus Interface | Yes | Yes |
| Control Technology | Renesas R4 digital | Renesas digital control |
主要差異化特點
- Highest current in the HDA module family (對比ISL8281MFRZ-T1)
- Fully integrated hybrid digital design (對比Discrete buck controller solutions)
- Trade-off: PMBus complexity (對比ISL8281MFRZ-T1)
設計說明
At 15A output with a 5V rail from a 12V input, the ISL8282M dissipates internal power due to conduction and switching losses; at up to 95% peak efficiency this can be roughly 2-4W depending on operating point (Estimated: 75W output / 0.95 efficiency implies ~4W loss worst case). Provide continuous copper pours under the module thermal features on outer and inner layers to spread heat; the fully encapsulated HDA-83 package relies primarily on PCB conduction, not airflow.
Follow the layout guidelines in the 51-page Renesas ISL8282M datasheet: place low-ESR input capacitors close to the VIN pins to suppress input ripple transients, and size output capacitance per the datasheet table for the chosen output voltage and load-step requirement. Connect all GND pins to a solid ground plane with multiple vias to reduce impedance and improve thermal performance.
Use the PMBus interface to configure output voltage rather than assuming a default setpoint - the ISL8282M output must be programmed within the 0.5V to 5V allowed range, and sequencing/margining commands must respect datasheet slew-rate limits. Exceeding the 16.5V maximum input, even transiently, can damage the module; verify upstream bus transients on 12V rails that can legally spike above nominal during fault events.
合規資訊
Compliance status was not stated in the verified web data; consult the Renesas product page certificate documents for RoHS/REACH declarations.
