LM5064 Negative Voltage System Power Management and Protection IC with PMBus | TI.com

LM5064 (ACTIVE)

Negative Voltage System Power Management and Protection IC with PMBus

Negative Voltage System Power Management and Protection IC with PMBus - LM5064
 

Recommended alternative parts

  • LM5066  -  High Voltage System Power Management And Protection IC With PMBus
  • LM5067  -  Negative Hot Swap / Inrush Current Controller With Power Limiting
  • LM5068  -  Negative Voltage Hot Swap Controller

Description

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.

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

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Parametrics Compare all products in I2C/PMBus Monitors

 
Digital Interface
Current Measurement Accuracy (%)
Voltage Measurement Accuracy (%)
Power Measurement Accuracy (%)
Current Limit Threshold (Typ) (Ext FET=mV)
Current Limit Accuracy
Fault Response
Status Output
ON_OFF Control Input(s)
FET Protection
Features
Supply Voltage (Min) (V)
Supply Voltage (Max) (V)
Vabsmax_cont (V)
Rating
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
LM5064 LM25066A LM25066I LM25066IA LM5066 LM5066I LM5067 LM5068
PMBus     PMBus     PMBus     PMBus     PMBus     PMBus        
3     1.0     2.4     1     3     1.75     N/A     N/A    
2.7     1     1.4     1     2.7     1.25     N/A     N/A    
4.5     2.0     3     2     4.5     2.5     N/A     N/A    
26
50    
25
46    
25     25
46    
26
50    
26
50    
50     100    
+/-13.2% @ 26 mV
+/-6% @ 50 mV    
+/-8% @ 25 mV
+/-11.9% @ 46 mV    
25 mV +/- 8%     25 mV +/- 8%
46 mV +/- 8%    
+/-11.6% @ 26 mV
+/-6% @ 50 mV    
+/-10% @ 26 mV
+/-10% @ 50 mV    
50 mV +/- 12%     100 mV +/- 20%    
Auto Retry
Latch Off
Via I2C    
Auto Retry
Latch Off
Via I2C    
Auto Retry
Latch Off    
Auto Retry
Latch Off    
Auto Retry
Latch Off
Via I2C    
Auto Retry
Latch Off
Via I2C    
Auto Retry
Latch Off    
Auto Retry
Latch Off    
PG     PG     PG     PG     PG     PG     PG     PG
PG\    
OV
UV/EN    
OV
UV/EN    
EN     EN     OV
UV/EN    
OV
UV/EN    
  EN    
SOA
Thermal    
SOA
Thermal    
SOA
Thermal    
SOA
Thermal    
SOA
Thermal    
SOA
Thermal    
SOA     N/A    
Digital Temp Monitor
PMBus
Supports Telemetry Data Storage    
Digital Temp Monitor
PMBus
Supports Telemetry Data Storage    
Digital Temp Monitor
PMBus
Supports Telemetry Data Storage    
Digital Temp Monitor
PMBus
Supports Telemetry Data Storage    
Digital Temp Monitor
PMBus
Supports Telemetry Data Storage    
Digital Temp Monitor
Supports Telemetry Data Storage    
N/A     N/A    
10     2.9     2.9     2.9     10     10        
80     17     17     17     80     80        
100     24     24     24     100     100     -100     -100    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 105    
HTSSOP     WQFN     WQFN     WQFN     HTSSOP     HTSSOP