IS200WNPSS1A - Power Supply Daughterboard

Functional Description

IS200WNPSS1A is a power supply daughterboard developed by GE. It is part of the Mark VIe series. The component is a power supply daughter board under Vibration

Monitoring System. The WNPS utilizes the 28V bus from the corresponding channel (R, S, or T) to generate the necessary power for both the vibration probes and any onboard chips that require power. Additionally, each -28V supply is equipped with a monitor feed, which should be looped back to the I/O pack for monitoring purposes.

Features

1. These daughterboards play a crucial role in converting +28V to -28V power, essential for the operation of the system. Maintenance can be carried out without disrupting system functionality by disconnecting the I/O pack power and removing the WNPS, ensuring continuous operation even during maintenance activities.

2. Mounting: To meet stringent vibration and seismic standards, it is imperative that the daughterboards are securely mounted within the TVBA. This ensures stability and reliability, preventing issues related to vibration or seismic activity that could compromise system performance.

3. Power Distribution and Monitoring: The WNPS utilizes the 28V bus from the corresponding channel to supply power to the vibration probes and onboard chips requiring power. Additionally, monitor feeds for each -28V supply are routed back to the I/O pack for continuous monitoring, allowing for timely detection of any potential issues or anomalies.

4. Current Distribution and Capability: Through a sophisticated mechanism of diode-based current sharing, the TVBA combines the three -28V sources to create the TVBA N28 bus. This configuration enables the TVBA to supply sufficient current to various components, ensuring reliable performance under normal operating conditions. However, it's essential to note that a TVBA equipped with a single WNPS may not be able to handle certain conditions, highlighting the importance of redundancy in ensuring system reliability and functionality.

Electrical Characteristics

1. Input Voltage Tolerance: The input voltage is specified at 28V with a tolerance of ±5%. This range allows for variations in input voltage while maintaining stability and functionality within the system.

2. Output Voltage Regulation: Provides an output voltage of -28V with a tolerance of ±5%. This precise regulation ensures consistent and reliable power delivery to downstream components, enhancing overall system performance.

3. Output Ripple: To maintain signal integrity and minimize interference, it features an output ripple of no more than 1% of the DC value. This low ripple ensures clean power delivery, essential for sensitive electronic components.

4. Maximum Output Current: With a maximum output current of 400 mA, reliably power a variety of components within the system. This high current capacity enables the TVBA to support demanding applications while ensuring stable operation under load conditions.