+48V hot swap controller from Analog Devices, minimises downtime

A +48V hot swap controller and PMBus power monitor with digital power monitoring, the ADM1272, from Analog Devices, is claimed to provide superior plug-in board protection and minimise downtime.

 Designed for high-voltage system control up to 80V, the ADM1272 provides plug-in board protection in mission critical systems, such as servers and communications equipment. Advanced system control and board power monitoring protect against system faults and system resets from transients up to 120V, which minimizes system downtime and maximizes availability of the system across all conditions.

Overall system reliability and MOSFET protection are dramatically increased, adds Analog Devices, with the ADM1272’s adaptable safe operating area (SOA) protection feature. SOA protection also enables the use of MOSFETs with a smaller form factor and lower cost than traditional hot swap controller solutions, says the company.

The ADM1272 also has performance optimising features such as a PMBus digital interface that provides the system with real time telemetry and fault status information.

 In a data centre, like many communications infrastructures, high availability and reliability is a critical part of the system design. Pluggable modules or printed circuit boards (PCBs), such as servers and storage, require a protection and control circuit at the power entry point. This is referred to as a hot swap control circuit. The ADM1272 hot swap controller accommodates supply voltages from 16 to 80V and allows a circuit board to be removed from, or inserted safely into, a live backplane, eliminating the need to power it down. The ADM1272 also provides system protection from faults such as over-current events, voltage transients and short circuits. Other features include current, voltage, power and energy readback using an integrated 12bit analogue to digital converter (ADC) accessed using a PMBus interface. The hot swap controller is able to stand off up to 120V making it reliable and able to survive surges and transients and avoiding resets, commonly associated with high voltage systems. Packaging is an 8.0 x 7.0mm, 48-lead LFCSP, and True High Voltage (80V) IPC-9592-compliant.

 http://www.analog.com

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