National Semiconductor Corp. of Santa Clara, CA, released the second-generation, digitally programmable LP5552 PowerWise energy management unit (EMU) and advanced power controller (APC2) intellectual property (IP) package for reducing power consumption in battery-powered handheld consumer products. Nationalís APC2 IP pairs with the LP5552 EMU to reduce the power consumption of high data-rate digital processors with frequency-scaling capability by up to 70 percent.
The APC2 is compatible with Intelligent Energy Manager frequency-scaling technology from ARM Ltd. The LP5552 and APC2 are compliant with the PowerWise Interface 2.0 open-industry standard introduced by National and ARM earlier this year.
The LP5552 enables a digital processor to adaptively adjust its supply voltage to the minimum level needed, greatly reducing its power consumption. The LP5552 includes two adaptive-supply-voltage buck regulators for the processor cores and five additional programmable regulators.