凌力尔特模拟创新杂志 (January 2012)

Thoughpowermanagementiscriticaltothereliableoperationofmodernelectronicsystems,voltageregulatorsareperhapsthelastremaining“blindspot”intoday’sdigitallymanagedsystems.Fewregulatorshavethemeansfordirectconfigurationormonitoringofkeypowersystemoperatingparameters.Asaresult,powerdesignerswhowantcompletedigitalcontrolmustuseamixedbag

ofsequencers,microcontrollersandvoltagesupervisorstoprogrambasicregulatorstart-upandsafetyfunctions.DigitallyprogrammableDC/DCconvertersareavailable,mostnotablythosewithVIDoutputvoltagecontroldesignedforVRMcorepowersupplies,butthesespecificallytargetedconvertersdonotdirectlycommunicateimportantoperatingparameters,suchasreal-timecurrents.January2012Volume21Number4INTHISISSUEinteger-NsynthesizerDualOutputDC/DCControllerCombinesDigitalPowerSystemwithintegratedVCOina4mm×5mmpackage9supercapacitor-basedpowersupplyride-throughManagementwithAnalogControlsystem15Loopfor±0.5%VOUTAccuracyultralow-EMI,ModuleGregoryManloveregulatorisEN55022classBcertified20ThoughpowermanagementiscriticaltothereliableoperationofUMTSbasestationreceiver