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LM5064

ACTIVE

-10-V to -80-V hot swap controller with PMBus

Product details

FET External Vin (min) (V) -80 Vin (max) (V) -10 Vabsmax_cont (V) 100 Current limit (min) (A) 0.01 Current limit (max) (A) 500 Overcurrent response Circuit breaker, current limiting Fault response Auto-retry, Latch-off Soft start Adjustable Overvoltage response Cut-off Features Current monitoring, Fault output, PMBus, Power good signal Rating Catalog Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125 Function Adjustable current limit, Current monitoring, Inrush current control, Overvoltage protection, Power good signal, Short circuit protection, Thermal shutdown
FET External Vin (min) (V) -80 Vin (max) (V) -10 Vabsmax_cont (V) 100 Current limit (min) (A) 0.01 Current limit (max) (A) 500 Overcurrent response Circuit breaker, current limiting Fault response Auto-retry, Latch-off Soft start Adjustable Overvoltage response Cut-off Features Current monitoring, Fault output, PMBus, Power good signal Rating Catalog Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125 Function Adjustable current limit, Current monitoring, Inrush current control, Overvoltage protection, Power good signal, Short circuit protection, Thermal shutdown
HTSSOP (PWP) 28 62.08 mm² 9.7 x 6.4
  • 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
  • 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.

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.

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Technical documentation

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Type Title Date
* Data sheet LM5064 Negative Voltage System Pwr Mgmt & Protection IC with PMBus datasheet (Rev. E) 20 Feb 2013
User guide AN-2143 LM5064 Evaluation Kit (Rev. B) 06 Jan 2020
Application note Basics of Power Switches (Rev. A) PDF | HTML 26 Apr 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Technical article Simplify digital hot swap design using the PI-Commander GUI PDF | HTML 06 Jun 2016
Selection guide Hot Swap Selection Tool 28 Jul 2015
Application note Robust Hot Swap Design (Rev. A) 08 Apr 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LM5064EVK — Evaluation Board for the LM5064

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 (...)

User guide: PDF
Not available on TI.com
GUI for evaluation module (EVM)

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

Supported products & hardware

Supported products & hardware

Products
eFuses & hot swap controllers
LM25066 2.9-V to 17-V hot swap controller with PMBus LM25066I 2.9-V to 17-V hot swap controller with I2C and PMBus with Intel node manager LM5064 -10-V to -80-V hot swap controller with PMBus LM5066 10-V to 80-V hot swap controller with current, -Voltage and power monitoring and PMBus
Digital power monitors
LM25056 3 to 17V, 12-bit, pmbus output current/voltage/power/temperature monitor
Hardware development
Evaluation board
LM5066EVK LM5066 Evaluation Kit
GUI for evaluation module (EVM)

SLVC572 PI-Commander EVM GUI

lock = Requires export approval (1 minute)
Supported products & hardware

Supported products & hardware

Products
eFuses & hot swap controllers
LM25066 2.9-V to 17-V hot swap controller with PMBus LM25066A 2.9-V to 17-V hot swap controller with I2C and PMBus with increased monitoring accuracy LM25066I 2.9-V to 17-V hot swap controller with I2C and PMBus with Intel node manager LM25066IA 2.9-V to 17-V hot swap controller with I2C and PMBus - increased monitoring accuracy and intel node LM5064 -10-V to -80-V hot swap controller with PMBus LM5066 10-V to 80-V hot swap controller with current, -Voltage and power monitoring and PMBus LM5066I 10-V to 80-V hot swap controller with improved current, voltage and power monitoring accuracy
Power sourcing equipment
TPS23861 2-pair, type-2, 4-channel PoE PSE with autonomous mode
Hardware development
Evaluation board
LM5056EVM LM5056 High Voltage System Power Management IC Evaluation Module TPS23861EVM-612 TPS23861EVM-612 Evaluation Module for Quad IEEE 802.3at PoE PSE Controller
Simulation model

LM5064 TINA-TI Reference Design

SNVM462.TSC (348 KB) - TINA-TI Reference Design
Simulation model

LM5064 TINA-TI Transient Spice Model

SNVM461.ZIP (46 KB) - TINA-TI Spice Model
Simulation model

LM5064 Unencrypted PSpice Transient Model Package (Rev. B)

SNVM435B.ZIP (77 KB) - PSpice Model
Calculation tool

SLVC556 LM5064 Design Calculator

Supported products & hardware

Supported products & hardware

Products
eFuses & hot swap controllers
LM5064 -10-V to -80-V hot swap controller with PMBus
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

Supported products & hardware

This design resource supports most products in these categories.

Check the product details page to verify support.

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 (...)
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HTSSOP (PWP) 28 View options

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