LM25066IA Series
2.9-V to 17-V hot swap controller with I2C and PMBus - increased monitoring accuracy and intel node
Manufacturer: Texas Instruments
Catalog
2.9-V to 17-V hot swap controller with I2C and PMBus - increased monitoring accuracy and intel node
Key Features
• Input Voltage Range: 2.9 V to 17 VI2C/SMBus Interface and PMBus Compliant Command StructureProgrammable 25-mV or 46-mV Current Limit ThresholdConfigurable Circuit Breaker Protection for Hard ShortsConfigurable Undervoltage and Overvoltage Lockouts With HysteresisRemote Temperature Sensing With Programmable Warning and Shutdown ThresholdsDetection and Notification of Damaged MOSFET ConditionReal Time Monitoring of VIN, VOUT, IIN, PIN, VAUXWith 12-Bit Resolution and 1-kHz Sampling RateCurrent Measurement Accuracy: ±1% Over TemperaturePower Measurement Accuracy: ±2% Over TemperatureTrue Input Power Measurement Using Simultaneous Sampling of VINand IINAccurately Averages Dynamic Power ReadingsAveraging of VIN, IIN, PIN, and VOUTOver Programmable Interval Ranging from 0.001 to 4 SecondsProgrammable WARN and FAULT Thresholds withSMBANotificationBlack Box Capture of Telemetry Measurements and Device Status Triggered by WARN or FAULT Condition24-Lead WQFN PackageInput Voltage Range: 2.9 V to 17 VI2C/SMBus Interface and PMBus Compliant Command StructureProgrammable 25-mV or 46-mV Current Limit ThresholdConfigurable Circuit Breaker Protection for Hard ShortsConfigurable Undervoltage and Overvoltage Lockouts With HysteresisRemote Temperature Sensing With Programmable Warning and Shutdown ThresholdsDetection and Notification of Damaged MOSFET ConditionReal Time Monitoring of VIN, VOUT, IIN, PIN, VAUXWith 12-Bit Resolution and 1-kHz Sampling RateCurrent Measurement Accuracy: ±1% Over TemperaturePower Measurement Accuracy: ±2% Over TemperatureTrue Input Power Measurement Using Simultaneous Sampling of VINand IINAccurately Averages Dynamic Power ReadingsAveraging of VIN, IIN, PIN, and VOUTOver Programmable Interval Ranging from 0.001 to 4 SecondsProgrammable WARN and FAULT Thresholds withSMBANotificationBlack Box Capture of Telemetry Measurements and Device Status Triggered by WARN or FAULT Condition24-Lead WQFN Package
Description
AI
The LM25066A combines a high-performance hot-swap controller with a PMBus™ compliant SMBus/I2C interface to accurately measure, protect and control the electrical operating conditions of computing and storage blades connected to a backplane power bus. The LM25066A continuously supplies real-time power, voltage, current, temperature and fault data to the system management host via the SMBus interface.
The LM25066A 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 power source. A fast acting circuit breaker prevents damage in the event of a short circuit on the output. The input undervoltage and overvoltage levels and hysteresis are configurable, as well as the insertion delay time and fault detection time. A temperature monitoring block on the LM25066A interfaces with a low-cost external diode for monitoring the temperature of the external MOSFET or other thermally sensitive components. The POWER GOOD output provides a fast indicator when the input and/or output voltages are outside their programmed range. LM25066A current measurement accuracy is ±1% over temperature.
The LM25066A monitoring block 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 LM25066A combines a high-performance hot-swap controller with a PMBus™ compliant SMBus/I2C interface to accurately measure, protect and control the electrical operating conditions of computing and storage blades connected to a backplane power bus. The LM25066A continuously supplies real-time power, voltage, current, temperature and fault data to the system management host via the SMBus interface.
The LM25066A 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 power source. A fast acting circuit breaker prevents damage in the event of a short circuit on the output. The input undervoltage and overvoltage levels and hysteresis are configurable, as well as the insertion delay time and fault detection time. A temperature monitoring block on the LM25066A interfaces with a low-cost external diode for monitoring the temperature of the external MOSFET or other thermally sensitive components. The POWER GOOD output provides a fast indicator when the input and/or output voltages are outside their programmed range. LM25066A current measurement accuracy is ±1% over temperature.
The LM25066A monitoring block 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.
