1HardwareOverview 1.6PowerSupply
20 SatelliteL300D/L305D/SatelliteProL300D/EQUIUML300D/SATEGOL300DMa intenanceManual
1.6PowerSupply
Thepowersupplyunitprovidesmanydifferentvoltagesforthesystemboardandperformsthe
followingfunctions:
1.Powerinputmonitor
CheckswhethertheDCpowersupply(ACadapter)isconnectedtothecomputer.
Checkswhetherthebatterypackisconnectedtothecomputer.
MonitorstheDCpowersupplyinputvoltage(ACAdapteroutputvoltage).
2.Powersupply'sinternalcontrol
Turnsonandoffthebatterypackchargingpowersupply.
Issuesachargingcurrentinstruction tothePWMcontrol ICofthebatterypack charging
powersupply.
Controlsthesupplyof DCpowersupplyinput (ACAdapteroutput) tothepowersupply
unit.
Controlsthesupplyofpowertothesystemblock(load/logiccircuitside).
Controlsforcedshutdownifthepowersupplymalfunctions.
3.Logiccircuitcontrol
Instructsthegatearraytoenable/disabletuningthepoweron.
Controlspower-on/offoperation.
4.Statusdisplay
TurnsonthePowerLED(inGreenorAMBER).
Batteryindicator(inGreenorAMBERorAMBERFlash).
5.Externalinterface
PerformscommunicationthroughtheI2Cbus(viatheinternalEC/KBC).
Transfersthepowersupplyoperationmode.
6.Outputmonitor
Monitorsthevoltageoutputtothesystemblock(load/logiccircuitside).
Monitorsthevoltage,overvoltage,input/outputcurrentofthebatterypack.
Monitorstheinternaltemperatureofthebatterypack.
MonitorsthesupplyvoltagefromtheACadapter.