MOSFETs available at lower cost in smaller form factors

Analog Devices has introduced the ADM1272 +48V hot swap controller and PMBus power monitor.

Developed to control high-voltage systems up to 80V, the ADM1272 reliably protects plug-in boards and prevents catastrophic losses that may occur in systems such as servers and communication equipment. In addition, based on improved system control and board power monitoring technology, it safely protects the system from malfunctions and initialization caused by transient voltages up to 120V.

Overall system reliability and MOSFET protection are significantly enhanced by the ADM1272’s flexible SOA protection feature. The addition of this feature allows MOSFETs to be used in a smaller form factor and at a lower cost than traditional hot swap controller solutions. In addition, a PMBus digital interface is provided to provide real-time telemetry and fault status information to the system for performance optimization.

As with many communications infrastructures, high availability and reliability are critical to system design in data centers. Mountable modules/PCBs, such as servers and storage, require protection and control circuits called hot-swap control circuits at the point of power ingress. The ADM1272 hot swap controller can accept voltages from 16V to 80V.

This circuit board can be safely inserted and removed from the back of the circuit board even while the power is connected, eliminating the need for power off, and protecting the system from malfunctions such as overcurrent, overvoltage, and short circuit. In addition, current, voltage, power, and energy readback can also be implemented by connecting to a 12-bit ADC using the PMBus interface. The hot swap controller can withstand voltages up to 120 V, boasting excellent safety, such as withstanding damage caused by surge current, overvoltage, or reset, which commonly occur in high-voltage systems. The package complies with the True High Voltage (80 V) IPC-9592 standard.