48V hot swap controller incorporates digital power monitoring
Advanced system control and board power monitoring provide improved protection against system faults and system resets from transients up to 120V, to minimize system downtime. Overall system reliability and MOSFET protection are increased 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. Other performance optimizing features include a PMBus digital interface that provides the system with real time telemetry and fault status information.
The controller accommodates supply voltages from 16V to 80V and allows a circuit board to be removed from or inserted safely into a live backplane. 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 12-bit ADC, accessed using a PMBus interface. The controller is able to stand off up to 120V making it very reliable by surviving surges and transients and avoiding resets, commonly associated with high voltage systems. Packaging is True High Voltage (80V) IPC-9592 compliant; the part comes in an 8 × 7 mm, 48-Lead, LFCSP.
Analog offers design guidance at; www.analog.com/en/analog-dialogue/articles/understanding-hot-swap.html
Analog Devices; www.analog.com/ADM1272
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