LMI800
- Isolated floating hotswap controller
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Support 2-wire, 3-wire system architectures with high and low-side configurations
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- Integrated Isolated Power Supply for hotswap controller bias
- GND referrenced signals with Reinforced insulation to 800V
- PGOOD, Fault assertion on SMBA and PMBus Telemetry
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Robust isolation barrier:
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High lifetime at up to 1000VDC working voltage
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Up to 5000VRMS isolation rating
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Up to 10.4kV surge capability
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SYNC pin for coordination between high and low side hotswap controllers
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DISC pin for output capacitor discharge control
- Strong gate pull down (1.2A) for fast turn OFF
- Robust short circuit protection (360ns)
- Failed FET detection
- Programable UV, OV, tFAULT thresholds
- External FET temperature sensing
- PMBus® interface for telemetry, control, configuration and debug
- On chip EEPROM nonvolatile memory for configuration
- Precision VIN, VOUT, IIN, PIN, VAUX monitoring V (<±1.5%); I (<±1%); P (<±2%)
- Power cycle with a single command
- Blackbox fault recording of multiple events with relative time stamp stored in internal EEPROM
- 12-bit ADC with 250kHz sampling rate
- –40°C < TJ < 125°C operation
The LMI800PS is high voltage isolated floating hotswap controller designed to support 2-wire and 3-wire system architecture with high and low side configuration for server and datacentres. This device requires only single power supply input referred to user ground and utlizes inbuilt isolated power supply for the hotswap controller bias. All user interface are reinforced isolated to 800V and ensured alignment with UL safety standards.
The LMI800PS comes with SYNC pin for coordination between high and low side hotswap controllers which provides user a liberty to optimize the FET rating. The DISC pin provides control feature to discharge the output load capacitor during system plug out.
It has Programmable power limit threshold along with adjustable fault time (tFAULT) which further limits maximum power dissipation and ensure FET SOA protection under all critical events.
An integrated PMBus™interface enables remote monitoring, control, and configuration of the system in real time. Key parameters can be accessed remotely for telemetry, and various thresholds can be configured through PMBus or stored in internal non volatile memory.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | LMI800PS High Voltage Isolated Hotswap Controller with PMBus Interface datasheet | PDF | HTML | 2026/10/6 | ||
| 白皮書 | 適用於高電壓直流供電 AI 伺服器的熱插拔解決方案 | PDF | HTML | PDF | HTML | 2026/10/14 |
設計與開發
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LMI800PSEVM — LMI800 評估模組
LMI800PS 評估模組 (EVM) 包含用於評估 LMI800PS 熱插拔控制器的評估電路與參考電路。LMI800PS 裝置結合高效能熱插拔控制器與 PMBus 介面，可精確量測、保護及控制連接至 800V 背板電源匯流排或電源供應器的系統之電氣運作條件。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SSOP (DFP) | 40 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。