LM5064PMH/NOPB Negative Voltage System Power Management and Protection IC with PMBus HTSSOP spot stock

Product Descriptions

The LM5064 combines a high performance hot swap controller  with   a   PMBus^TM    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 (V_IN, I_IN, P_IN, 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.

Product Features

•    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

Product Applications

•    Base Station Power Distribution Systems

•    Intelligent Solid State Circuit Breaker

•    -24V/-48V Industrial Systems

Product Specification

Product Photos

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