Toshiba EQUIUM L300D 6PowerSupply, Powerinputmonitor, MonitorsthesupplyvoltagefromtheACadapter

1￿Hardware￿Overview￿ 1.6￿Power￿Supply￿

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.￿

20￿ Satellite￿L300D/L305D/Satellite￿Pro￿L300D/EQUIUM￿L300D/SATEGO￿L300D￿￿￿￿￿Maintenance￿Manual￿