GUI for evaluation module (EVM)
LM5066HXEVM-GUI — LM5066Hx evaluation module GUI
The GUI allows the customer to configure, control, and view telemetry data from the LM5066H1 and LM5066H2 Hot-Swap controllers
LM5066H
5.5V to 90V advanced hot-swap controller with I/V/P monitoring and PMBus™ interface
Data sheet
LM5066H
- Input operating voltage range: 5.5V to 90V
- 100V absolute maximum rating
- Withstands negative voltages up to –5V at output
- Adjustable ILIM thresholds from 10mV to 50mV
- Programmable FET SOA protection
- Programmable overcurrent blanking with digital timer
- Strong gate pull down (1.5A) for fast turn OFF
- Robust short-circuit protection
- Fast trip response (270ns)
- Immune to supply line transients
- LM5066H2 with additional features
- Dual gate drive for high power applications
- SYNC pin for parallel controller operation
- Soft start capacitor disconnect
- Failed FET detection
- Programable UV, OV, tFAULT thresholds
- External FET temperature sensing
- Failed FET detection
- PMBus® interface for telemetry, control, configuration and debug
- On chip EEPROM nonvolatile memory for configuration
- Precision VIN, VOUT, IIN, PIN, VAUX monitoring V (<±1%); I (<±1%); P (<±1.75%)
- 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
- Supports energy monitoring via Read_EIN command
- External FET temperature sensing
The LM5066Hx provides robust protection and precision monitoring for 12V, 24V and 48V systems with programmable UV, OV, ILIM, and fast short-circuit protection for customized input power applications. Programmable power limit threshold along with adjustable fault timer (tFAULT) limits maximum power dissipation and ensures FET SOA protection under all conditions including startup and fault events. Two level overcurrent blanking with digital timers allows higher load transients to pass, enabling lower current limit settings and reducing requirements for strong SOA MOSFETs.
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 EEPROM. The fast, accurate analog load current monitor supports predictive maintenance and dynamic power management including Intel PSYS and PROCHOT functionality to optimize server performance. A blackbox fault recording feature helps in debugging field failures.
The LM5066H2 features dual gate drive architecture which enables use of a single strong SOA FET to handle power stress during startup and fault conditions, combined with multiple small low RDS(ON) FETs for normal load current operation, reducing the total solution size. The devices are characterized for operation over a junction temperature range of –40°C to +125°C.
Technical documentation
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View all 1 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LM5066Hx 5.5V to 90V, Advanced Hotswap Controller With I/V/P Monitoring and PMBus® Interface datasheet (Rev. A) | PDF | HTML | 22 Dec 2025 |
Design & development
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Evaluation board
LM5066H1EVM — LM5066H1 evaluation module
This user’s guide describes the LM5066H1EVM. The LM5066H1EVM contains evaluation and reference circuitry for the LM5066H1 hot-swap controller. The LM5066H1 device combines a high-performance hot-swap controller with a PMBus interface to accurately measure, protect, and control the electrical (...)
User guide: PDF
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 (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HTSSOP (PWP) | 28 | Ultra Librarian |
Ordering & quality
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