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PI2122 Datasheet(PDF) 1 Page - Vicor Corporation |
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PI2122 Datasheet(HTML) 1 Page - Vicor Corporation |
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1 / 19 page  PI2122 Cool-ORing Series 12Amp Active ORing Solution With Load Disconnect Description The Cool-ORing PI2122 is a complete full-function Active ORing solution with a high-speed ORing MOSFET controller and a very low on-state resistance Dual MOSFETs designed for use in redundant power system architectures. The PI2122 Cool-ORing solution is offered in an extremely small, thermally enhanced LGA package and can be used in low voltage ( ≤ 5Vbus) high side Active ORing applications. The PI2122 enables extremely low power loss with fast dynamic response to fault conditions, critical for high availability systems. The PI2122 provide true bi-directional switch capabilities to protect against both power source and load fault conditions. A load short circuit detection feature allows user definition of a short condition enabling minimum duty cycle into a short. The PI2122 has the added benefit of being able to protect against output load fault conditions that may induce excessive forward current and device over-temperature by turning off the back-to-back MOSFETs with an auto-retry programmable off-time. The back-to-back MOSFETs drain-to-drain voltage is monitored to detect normal forward, excessive forward, light load and reverse current flow. The status is reported via an active low fault flag output. A temperature sensing function turns off the MOSFETs and indicates a fault if the controller junction temperature exceeds 145 °C. Features • Integrated High Performance 12A, 6m Ω back-to- back MOSFET • Very-small, high density fully-optimized solution providing simple PCB layout. • Fast Dynamic Response, with 140ns reverse & 170ns forward over-current turn-off delay time • Accurate sensing capability to indicate system fault conditions • Programmable under & over-voltage functions • Over temperature shutdown • Programmable over-current off time • Programmable short circuit load detection • Active low fault flag output Applications • N+1 Redundant Power Systems • Servers & High End Computing • High-side Active ORing • High current Active ORing ( ≤ 5Vbus) • MicroTCA Package • 5mm x 7mm 17-pin Thermally Enhanced LGA Package Typical Application: Figure 1: PI2122 High Side Active ORing Figure 1: PI2122 input current de-rating based on Picor Corporation • picorpower.com PI2122 Rev1.0 Page 1 of 19 |
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