The Tundra Tsi205™ Power Controller provides comprehensive monitoring and control of primary-side power parameters and safe transmission of data to a companion secondary-side power subsystem controller IC. Providing theseprimary-side parameters to a secondary-side management device can provide significant system uptime advantages. Hidden fuse faults can be flagged before system downtime occurs. Card-level parameters such as primary-side current and voltage levels can indicate fault trends and drive preventive maintenance activities. Tsi205 also provides control of the intermediate bus isolated power supply during card insertion and extraction. The Tsi205 provides all these primary-side monitoring capabilities.

A PI-Link™ interface enables safe transmission of primary side data across the isolation barrier using a low-cost transformer. This link provides data to the Tundra Tsi257™ Power Controller where it can be used and stored. In addition, if an unrecoverable error on the secondary side occurs, the Tsi257 can send a signal to the Tsi205 to shutdown primary power.

The Tsi205-SIPAV shuts down if primary input sees an over voltage and will automatically retry after a fault, whereas the Tsi205-SIPV provides a warning for over voltage and shuts down after a fault.

Business Benefits

Integration

The ability to monitor primary side power parameters and transmit these for action has not been possible before. Using PI-Link, the Tundra Tsi205 Power Controller can pass data to a Tsi257 Power Controller on the secondary side. This communication between primary and secondary side power controllers means better diagnosis of faults before they happen and improved up-time. In addition, if an unrecoverable fault occurs on the secondary side, the Tsi205 can receive a signal from the Tsi257 to shutdown primary power.

Ease of System Design

Before this kind of primary side power controller existed, the nature of power system design meant specialized design expertise was needed. Now anyone familiar with digital PCB design can create a “first time right” power system on their card.

Note: This part was formerly marketed by Potentia Semiconductor Corporation as the PS-1005 and PS-1005A.