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LM5064

ACTIVE

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

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Data sheet

LM5064

ACTIVE
Data sheet Order now

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

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