WIC-400W-ATCA-Load
AdvancedTCA 3.0 compliant boards with IPMC interfaces managing the power dissipation and the sensors through IPMI and PICMG 3.0 compatible interfaces
- Main board has nine power dissipation elements
- RTM is a tenth element
- Each element is a managed FRU
- Each FRU uses the set_power_level command
- Each power dissipation FRU has eight power levels allowing power dissipation settings between 0 and 40 watts in 5 W increments
- All control and sensors are accessed from the main board
- Power dissipation for each site is controlled by a low frequency PWM driver with a period of 10 mS
- The power dissipation value is the result of the power setting and the supply voltage
- Ten temperature sensors are associated with the power dissipation sites
- Nine are on the main board and one on the RTM
- Three sensors measure airflow
- Two are located on the main board and one is located on the RTM
- A voltage sensor provides a value to ensure that the power in the thermal loads is independent of the supply voltage
- The board transitions to state M4 with a desired power level of 0 W at each FRU
- The FRU remain at this level until the user sets the required power level using the shelf manager command line interface (CLI) and the Set Power Level command
- Power dissipation mezzanine elements
- The ten power dissipation zones consist of of nine power resistors, a power FET switch and a temperature sensor
- The controlling firmware monitors the supply voltage and switches the resistor bank on/off through a PWM algorithm to meet the required power draw
- The main heating elements are mounted on the mezzanine board
- The RTM heaters are integral to the RTM
- Airflow sensors consist of a heating element and a temperature sensor running under software control to determine the airflow
- The airflow algorithm is validated in an AMCA 210-85 test chamber
- Load Board control firmware runs on the ATmega128 IPMC controller
- EMI filter with integrated hot-swap
- Aligns with PICMG 3.0 requirements for hot-insertion and board level conducted noise limitations
- Other QPI models: 24 V and 48 V, 7 A and 14 A
- SEU < 1 per 1,000 days (1.0 E-4, 90%)
- Complete on-device management system, including agents and backend system
- 128 MB RH flash (option) XML-based backend system provides NETCONF-like mechanisms to command line and Web interfaces asynchronous with RS-422
- Other custom sizes (option)
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