TheISL95520isahighlyversatilecombobatterychargerconfigurableforoperatingaseitheraHybridPowerBoost(HPB)chargeroraNarrowVDC(NVDC)charger,supporting2-,3-,or4-cellbatteries.Bothconfigurationsallowthebatterytoworkwiththeadaptertogethertosupplythesystemloadwhenitexceedstheadaptercapability,referredtoassystemTurbomode.TheHPBchargerconfigurationreverse-boostsbatteryenergytothesystembustohelptheadapterprovidesystempowerinTurbomode.TheNVDCchargerconfigurationquicklyturnsonBGATEtoenablethebatterytohelptheadapterprovidesystempowerinTurbomode.
TheISL95520usesN-channelMOSFETs(NFETs)foralltheswitchestoachievethebestperformanceandlowestBOMcost.TheinternalchargepumpiscapableofturningonalltheNFETsfastorslowdependingonthecircumstanceortheneed.TheabilitytoquicklyturnonNFETspreventssystembusvoltagedropwhenthebatteryissuddenlyremovedinTurbomodeorinbatterylearnmode.
TheISL95520providesmanyprotectionfeaturesincludingaPROCHOT#indicatorforsystemlowvoltage,adapterovercurrent,batteryovercurrentoroverheating,withanarrayofSMBusprogrammableparametersformaximumflexibility.TheISL95520alsofeatureshardwarebasedadaptercurrentlimitandbattery-currentlimitinadditiontoSMBusprogrammablelimits.
TheISL95520provideshighaccuracyadaptercurrentmonitor,batterycurrentmonitor,andsystempowermonitoroutputs.Toprovidemaximumflexibilityforworkingwithhighpowerandlowpowersystems,theISL95520providesseveralconfigurablecurrent-senseresistorvalueoptionstoachievethebesttrade-offofcurrentsensingaccuracyvspowerloss.
TheISL95520usestheRenesaspatentedRobustRippleRegulator(R3™)modulationschemetoprovideexcellentlight-loadefficiencyandfastdynamicresponse.TheISL95520isavailableina32Ld4x4mm2QFNpackage.
Feature
- Supports battery removal during battery learn mode
- Actively controlled inrush current to prevent FET damage
- PROCHOT# indicator for system low voltage, adapter overcurrent, battery overcurrent, and system overheating
- Hardware-based adapter-current and battery-current limits
- Supports sudden battery removal in system Turbo mode
