New-Tech Europe Magazine | April 2017

new products

Analog Devices’ +48V Hot Swap Controller with Digital Power Monitoring Provides Superior Plug-in Board Protection and Minimizes Downtime ADI announced the availability of the ADM1272, an innovative +48V hot swap controller and PMBus™ power monitor. Designed for high-voltage system control up to 80V, the ADM1272 provides reliable plug- in board protection in mission critical systems, such as servers and communication equipment. Advanced system control and board power monitoring provide superior protection 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 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. In a datacenter, like many communications infrastructures, high availability and reliability is a critical part of the system design. Pluggable modules/ PCBs, such as servers and storage, require a protection and control circuit at the power entry point, commonly referred to as a hot swap control circuit. The ADM1272 hot swap controller accommodates supply voltages from 16V 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 12-bit analog-to-digital converter (ADC) accessed using a PMBus interface. This hot swap 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.

Fusible resistors from TT Electronics save PCB space Radial taped power resistors ideal for minimal footprint designs TT Electronics, a global provider of engineered electronics for performance critical applications, today launched its ULWP2R range of fusible wirewound resistors. By combining the functions of a fuse and a line input resistor in a single, vertical radial formed component the resistors save valuable PCB space. The UL recognised, 2W rated power resistors are aimed at designers of high-density PSU circuits where PCB space is at a premium, fusing must be provided, and where automatic insertion is a requirement. For use in both the industrial and consumer sectors, the resistors can be deployed in power supplies, white goods controllers, circuit breakers, line input circuits, protection circuits and other applications. Factors driving the demand for this type of component are cost reduction re-designs that are increasing both the popularity of dual function components and the automated insertion of parts that cannot be switched to SMD. Further, the increasing electronic content in electrical products is putting pressure on the space available for PSU sections. With UL1412 recognition, TT Electronics’ ULWP2R range of fusible wirewound resistors makes it easier for customers to get UL approval and provides third party assurance of a safety critical part. The resistor’s radial, vertical format saves PCB space and also stops surrounding components and the PCB overheating, reducing field failure costs. The inrush and surge withstanding resistors provide failsafe mains fusing at 120/240Vrms and they feature a UL94-V0 flameproof coating. Supplied in tape and reel packaging they are ideal for minimal footprint designs

New-Tech Magazine Europe l 69