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Analog Devices Introduces a Highly Integrated Hot Swap Controller and Digital Power Monitor with PMBUS Interface

17th November 2010

Analog Devices

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Analog Devices is introducing the highly integrated ADM1275 hot-swap controller and power monitor for 2-20V input supplies. The new controller/monitor provides best in class power monitoring accuracy of 0.7% current sense accuracy with only 20 mV insertion loss when compared to alternative solutions. The ADM1275 enables accurate measurement of incoming power to allowing the system to take intelligent actions to reduce power consumption. By limiting inrush current during power up and enabling faster shutdown whenever an over current event happens, system reliability is improved. Over and under voltage monitoring of the back plane voltage ensures that circuit boards only operate when the backplane voltage is within specification. The new device also features current and voltage readback via an integrated 12- bit analog-to-digital converter (ADC), communicated through a PMBus interface.

With 0.7% current sense accuracy and only 20 mV insertion loss when compared to alternative solutions that only provide ± 5.1% current sense accuracy with 20 mV insertion loss, ADI offers the highest performance available, said Nigel Brooke, Product Marketing Manager, Power Management Technology Group, Analog Devices. When you combine <300ns response time to 'Short Circuit', more accurate measurements of incoming power and greater circuit board protection, power system designers can offer safer, more intelligent, and more reliable systems that reduce power consumption and increase system efficiency.

Key Features and Benefits

· ±0.7% current sense accuracy and a 12-bit ADC for current Vin/Vout readback provide greater circuit board protection and higher system efficiency

· Controls supply voltages from 2V to 20V provide greater design flexibility

· <300ns response time to Short Circuit enable greater system reliability

· High gate drive ensures a low insertion loss

· PMBus fast mode-compliant processor interface enables intelligent power management