Toshiba Satellite L510 Series - Power Supply

1HardwareOverview 1.5PowerSupply
16 Satellite/SatelliteProL510/L515/L517MaintenanceManual
1.5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Umberblink).
 Batteryindicator(inGreenorUmberblink).
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.