Driver or library
LM5066I
10-V to 80-V hot swap controller with improved current, voltage and power monitoring accuracy
Data sheet
LM5066I
- 10- to 80-V Operation
- 100-V Continuous Absolute Max
- 26 mV or 50 mV ILIM Threshold (±10%)
- Programmable FET SOA Protection
- Programable UV, OV, tFAULT Thresholds
- External FET Temperature Sensing
- Failed FET Detection
- I2C / SMBus Interface
- PMBus and Node Manager 2.0 and 3.0 Compliant Command Structure
- Precision V IN, VOUT, IIN, PIN, VAUX Monitoring
- V (±1.25%); I (±1.75%); P (±2.5%)
- Supports Energy Monitoring via Read_EIN Command
- Programable I/V/P Averaging Interval
- 12-bit ADC with 1-kHz Sampling Rate
- –40°C < TJ < 125°C Operation
LM5066I provides robust protection and precision monitoring for 10- to 80-V systems. Programmable UV, OV, ILIMIT, and fast-short circuit protection allow for customized protection for any application. Programmable FET SOA protection sets the maximum power the FET is allowed to dissipate under any condition. The programmable fault timer (tFAULT) is set to avoid nuisance trips, ensure start-up, and limit the duration of over load events.
In addition to circuit protection, the LM5066I supplies real-time power, voltage, current, temperature, and fault data to the system management host through the I2C / SMBus interface. PMBus compliant command structure makes it easy to program the device. Precision telemetry enables intelligent power management functions such as efficiency optimization and early fault detection. LM5066I also supports advanced features such as I/V/P averaging and peak power measurment to improve system diagnostics.
LM5066I is pin-to-pin compatible with the LM5066 and offers improved telemetry accuracy and supports the Read_Ein command to monitor energy. See for a detailed comparison.
Technical documentation
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View all 8 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LM5066I 10 to 80 V, Hotswap Controller With I/V/P Monitoring and PMBus Interface datasheet (Rev. C) | PDF | HTML | 20 Jul 2016 |
| Application note | Implementation of PSYS Monitor Using TPS25984, TPS25985, or TPS25990 eFuses | PDF | HTML | 15 Nov 2023 | |
| E-book | 11 Ways to Protect Your Power Path | 03 Jul 2019 | ||
| Application note | Minimizing System Down-time with Smart eFuses | 12 Jun 2019 | ||
| Technical article | Simplify digital hot swap design using the PI-Commander GUI | PDF | HTML | 06 Jun 2016 | |
| Application note | Handling System Transients in Hot Swap Applications | 08 May 2015 | ||
| Application note | Robust Hot Swap Design (Rev. A) | 08 Apr 2015 | ||
| User guide | LM5066IEVM-626 Evaluation Module | 15 May 2014 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
LM5066IEVM-626 — LM5066IEVM-626 Evaluation Module with PMBus
The LM5066IEVM-626 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM5066I high-performance hot-swap controller with PMBUS compliant SMBUS/I2C interface to accurately measure, protect and control the electrical operating conditions of systems connected to a (...)
User guide: PDF
GUI for evaluation module (EVM)
SLVC572 — PI-Commander EVM GUI
Supported products & hardware
Products
eFuses & hot swap controllers
Power sourcing equipment
Hardware development
Evaluation board
Simulation model
LM5066I Unencrypted PSpice Transient Model Package (Rev. A)
SNVM587A.ZIP (127 KB) - PSpice Model
Calculation tool
SNVR507 — LM5066I Design Calculator With FET Recommendation
Calculation tool
TVS-RECOMMENDATION-CALC — TVS diode recommendation tool
This tool suggests suitable TVS for given system parameters and abs max voltage rating of the device.
Supported products & hardware
This design resource supports most products in these categories.
Check the product details page to verify support.
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parametric-filter eFuses & hot swap controllers
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Reference designs
PMP23496 — 8kW hot-swap reference design for 48V artificial intelligence servers
With the advancements in artificial intelligence (AI) and machine learning (ML), enterprise servers have become power-intensive as these servers simultaneously process a large amount of data and storage. The steady-state power rating of each server motherboard has gone up 5kW to 6kW, in contrast to (...)
Test report: PDF
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HTSSOP (PWP) | 28 | Ultra Librarian |
Ordering & quality
Information included:
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- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
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Information included:
- Fab location
- Assembly location
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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