LM5064
- Input Voltage Range: -10V to -80V
- Programmable 26 mV or 50 mV Current Limit Threshold with Power Limiting (MOSFET Power Dissipation Limiting)
- Real Time Monitoring of VIN, VOUT, IIN, PIN, VAUX with 12-Bit Resolution and 1 kHz Sampling Rate
- Configurable Circuit Breaker Protection for Hard Shorts
- Configurable Under-Voltage and Over-Voltage Protection
- Remote Temperature Sensing with Programmable Warning and Shutdown Thresholds
- Detection and Notification of Damaged MOSFET Condition
- Power Measurement Accuracy: ±4.5% Over Temperature
- True Input Power Averages Dynamic Power Readings
- Averaging of VIN, IIN, PIN, and VOUT Over Programmable Interval Ranging from 0.001 to 4 Seconds
- Programmable WARN and FAULT Thresholds with SMBA Notification
- Black Box Capture of Telemetry Measurements and Device Status Triggered by WARN or FAULT Condition
- I2C/SMBus Interface and PMBus Compliant Command Structure
- Full Featured Application Development Software
- HTSSOP-28 Package
The LM5064 combines a high performance hot swap controller with a PMBusTM compliant SMBus/I2C interface to accurately measure, protect and control the electrical operating conditions of systems connected to a backplane power bus. The LM5064 continuously supplies real-time power, voltage, current, temperature and fault data to the system management host via the SMBus interface.
The LM5064 control block includes a unique hot swap architecture that provides current and power limiting to protect sensitive circuitry during insertion of boards into a live system backplane, or any other "hot" power source. A fast acting circuit breaker prevents damage in the event of a short circuit on the output. The input under-voltage and over-voltage levels and hysteresis are configurable, as well as the insertion delay time and fault detection time. A temperature monitoring block on the LM5064 interfaces with a low-cost external diode for monitoring the temperature of the external MOSFET or other thermally sensitive components. The PGD output provides a fast indicator when the input and/or output voltages are outside their programmed ranges.
The LM5064 monitoring circuit computes both the real-time and average values of subsystem operating parameters (VIN, IIN, PIN, VOUT) as well as the peak power. Accurate power averaging is accomplished by averaging the product of the input voltage and current. A black box (Telemetry/Fault Snapshot) function captures and stores telemetry data and device status in the event of a warning or a fault.
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 | LM5064 Negative Voltage System Pwr Mgmt & Protection IC with PMBus datasheet (Rev. E) | 2013/2/20 | |||
| 應用說明 | Basics of Power Switches (Rev. A) | PDF | HTML | 2019/4/26 | |||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 技術文章 | Simplify digital hot swap design using the PI-Commander GUI | PDF | HTML | 2016/6/6 | |||
| 選擇指南 | Hot Swap Selection Tool | 2015/7/28 | ||||
| 應用說明 | Robust Hot Swap Design (Rev. A) | 2015/4/8 |
設計與開發
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LM5064EVK — 適用於 LM5064 的評估板
The LM5064EVK evaluation module provides the power design engineer with a fully functional intelligent monitoring and protection controller board designed for negative voltage systems. This application note describes the various functions of the board, how to test and evaluate it, and how to use (...)
PMBUSMGRGUI-SW — LM25066, LM5066, LM5064, LM25056 PMBus Manager GUI
Companion GUI for evaluation boards supporting: LM25066, LM5066, LM5064 Hot Swap + telemetry devices and the LM25056 telemetry-only device
SLVC572 — PI-Commander EVM GUI
SLVC556 — LM5064 Design Calculator
TVS-RECOMMENDATION-CALC — TVS diode recommendation tool
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 28 | 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。