Output Power Monitor IC features digital I2C interface.
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Press Release Summary:
Based on TruePower(TM) technology, Model IR3720 monitors output filter inductor current in buck or multiphase converters from 0.5-1.8 V with 3.3% power accuracy and ±0.75% voltage accuracy. Output current or voltage is communicated to system controller through digital I2C interface to provide effective power management. Device provides designers with option of using resistive sensing or inductor DCR current sensing with internal thermal compensation feature.
Original Press Release:
IR's IR3720 With Innovative TruePower(TM) Technology and Digital I2C Interface Improves Accuracy to Maximize System Performance
EL SEGUNDO, Calif. - International Rectifier, IR (NYSE: IRF), a world leader in power management technology, today introduced the IR3720 output power monitor IC with digital I2C interface for low-voltage DC-DC converters used in notebook, desktop computers, and energy-efficient server applications.
As a result of its patent-pending TruePowerTM technology, the IR3720 achieves excellent current accuracy (0.2% typical error) over all input voltage and load ranges. The output current or voltage is communicated to the system controller through a digital I2C interface to provide highly effective power management.
"Competitive solutions that monitor voltage and current separately can cause measurement errors of more than 30 percent under dynamic conditions. However, by utilizing innovative TruePower(TM) technology to measure dynamic power at the output or load side of the voltage regulator, the IR3720 is an easy to implement solution that delivers a significant improvement in accuracy to maximize system performance," said Vijay Viswanathan, IR's product marketing engineer for Enterprise Power Products.
The new device monitors the output filter inductor current in buck or multiphase converters from 0.5V to 1.8V and provides designers with the option of using resistive sensing or inductor DCR current sensing with an internal thermal compensation feature to achieve higher efficiency compared to existing solutions while reducing bill of materials and board size requirements.
Specifications
Part Number Power Accuracy Vo range Voltage Accuracy Bias Supply Voltage Operating Temperature Package
IR3720M 3.3% 0.5 V - 1.8 V ±0.75% +3.3V ±5% -10 °C to 150 °C 10 L 3x3 DFN
More information is available on the International Rectifier website at www.irf.com
Availability and Pricing
Available in a 10-pin DFN lead-free package, pricing for the IR3720MTRPBF begins at US $1.20 each in 10,000-unit quantities. Production orders are available immediately. The devices are RoHS compliant and prices are subject to change.
About International Rectifier
International Rectifier (NYSE:IRF) is a world leader in power management technology. IR's analog and mixed signal ICs, advanced circuit devices, integrated power systems and components enable high performance computing and reduce energy waste from motors, the world's single largest consumer of electricity. Leading manufacturers of computers, energy efficient appliances, lighting, automobiles, satellites, aircraft and defense systems rely on IR's power management benchmarks to power their next generation products. For more information, go to www.irf.com.
Trademark Notice
IR® and TruePower(TM) are trademarks of International Rectifier Corporation. All other product names noted herein may be trademarks of their respective holders.
For more information, contact Graham Robertson, grobert1@irf.com 310-726-8512.
