ASUS_POWER時(shí)序

1、POWER 時(shí)序時(shí)序部門：FAE技術(shù)研發(fā)組徐百紅Pegatron Electrical Engineering Department1.電源進(jìn)入電源進(jìn)入(adapter)adapter當(dāng)adapter插入時(shí)產(chǎn)生A/D_DOCK_IN(19V)Pegatron Electrical Engineering Department1.電源進(jìn)入電源進(jìn)入(Battery)Battery 當(dāng)Battery插入時(shí)產(chǎn)生BAT_CON.(16.8V) TS1# 偵測(cè)電池插入.此信號(hào)為高電平,當(dāng)插入電池時(shí)為低電位. SMB0_DAT SMB0_CLK這兩個(gè)信號(hào)主要是偵測(cè)電池電量POWER_CHARGERACIND

2、CIN 輸入電壓輸出低電平信號(hào)CHG_PDS開啟A/D_DOCK_IN轉(zhuǎn)化AC_BAT_SYS輸出低電平信號(hào)CHG_PDL開啟BAT_CON轉(zhuǎn)化AC_BAT_SYSPegatron Electrical Engineering DepartmentPOWER PATHA/D_DOCK_INAC_BAT_SYS低電平信號(hào)低電平開啟兩個(gè)P-MOS管偵測(cè)外接Adaptar功率, 不同功率而阻值不同 90W10m ohm 65W20m ohm+5VAOAC_BAT_SYS從pin6輸入AC_BAT_SYS從pin24輸入從pin22輸出+5VAOPegatron Electrical Engineer

3、ing DepartmentBAT_CONAC_BAT_SYSBAT_CON經(jīng)過(guò)濾波電感產(chǎn)生BAT低電平信號(hào)開啟P-MOS管Pegatron Electrical Engineering Department+3VAO這是一個(gè)線性穩(wěn)壓芯片,+5VAO從pin1輸入,在pin3做一個(gè)shut_down#信號(hào),從pin5輸出+3VAO反饋回路:+3VAO經(jīng)過(guò)電阻R8121,R8130分壓反饋給U8102 pin4,使芯片pin5輸出一個(gè)穩(wěn)定的+3V反饋電壓Vref= 100K100K+174K3V=1.094VPegatron Electrical Engineering Department+5

4、VA +3VA+5VAO經(jīng)過(guò)隔離點(diǎn)產(chǎn)生+5VA+3VAO經(jīng)過(guò)隔離點(diǎn)產(chǎn)生+3VA +3VA主要用于EC工作電壓隔離點(diǎn)的作用：以目前做法主要用于Debug,當(dāng)某一電壓有問(wèn)題時(shí),有時(shí)維修人員較難去區(qū)分是前級(jí)線路未輸出電壓或是前級(jí)已經(jīng)輸出但被后級(jí)線路將電壓拉掉,此時(shí)隔離點(diǎn)用烙鐵挑開,再去量測(cè)前級(jí)線路是否有輸出,若無(wú)輸出則先往前級(jí)線路尋找,反之往后級(jí)線路尋找Pegatron Electrical Engineering DepartmentEC-工作電壓工作電壓+3VS是SB工作后由SUSB#_PWR開啟Pegatron Electrical Engineering DepartmentEC-RESET

5、+3VA_EC輸入給芯片U3001產(chǎn)生EC_RST#從pin19輸入ECPegatron Electrical Engineering DepartmentEC-CLOCK當(dāng)EC接收到工作電壓后就開始從pin160發(fā)出EC_XOUT給晶振提供電壓使其產(chǎn)生32.768KHz的頻率給EC工作Pegatron Electrical Engineering DepartmentVSUS_ON當(dāng)EC工作正常后會(huì)產(chǎn)生VSUS_ON高電平信號(hào)VSUS_ON將作為后面開啟電壓的Enable信號(hào)VSUS_ON理論上是EC產(chǎn)生,但是它要與BIOS進(jìn)行正確的AD交換后才會(huì)產(chǎn)生.Pegatron Electrical

6、 Engineering DepartmentVSUS_ONENBLVSUS_ON是高電平導(dǎo)通Q8105A使Q8105B關(guān)閉,VSUS_ON經(jīng)過(guò)電阻R8106產(chǎn)生ENBL信號(hào)FORCE_OFF#是強(qiáng)制關(guān)機(jī)信號(hào)當(dāng)為低電平時(shí)D8103導(dǎo)通拉底VSUS_ON,使其無(wú)法開啟后面電壓.(FORE_OFF#產(chǎn)生)Pegatron Electrical Engineering Department+12VSUS這是一個(gè)線性穩(wěn)壓芯片AC_BAT_SYS從pin1輸入, 從pin5輸出+12VSUS反饋回路:+12VSUS經(jīng)過(guò)電阻R8114,R8104分壓反饋給U8100 pin4,使芯片pin5輸出一個(gè)穩(wěn)定的

7、+12V反饋電壓Vfb=95.3K95.3K+845K12V =1.21VPegatron Electrical Engineering DepartmentSUS_PWRGDENBL信號(hào)從pin9,pin10輸入U(xiǎn)8101High-Low Side 點(diǎn)擊分壓反饋線路當(dāng)輸出電壓+3VSUS +5VSUS正常時(shí)芯片就輸出SUS_PWRGD返回POWER GOOD DETECTER +3VSUS南橋開機(jī)條件之一返回南橋Pegatron Electrical Engineering Department2.5VREF+5VO經(jīng)過(guò)電阻R9000和穩(wěn)壓二極管U9000產(chǎn)生+2.5VREF電阻R9000的

8、作用:分壓, 限流穩(wěn)壓二極管的工作原理:利用二極管的反向擊穿特性,在端處會(huì)產(chǎn)生一個(gè)穩(wěn)定的電壓(+2.5VREF),常作為參考電壓;穩(wěn)壓二極管電流越大則穩(wěn)壓效果越好,但電流過(guò)大超過(guò)額定功率則會(huì)使二極管損壞,所以必須串連一個(gè)電阻(R9000)做限流作用.Pegatron Electrical Engineering DepartmentPM_RSMRST當(dāng)EC pin54接收到SUS_PWRGD后從pin105發(fā)出PM_RSMRST#南橋開機(jī)條件之一返回南橋Pegatron Electrical Engineering Department+VCC_RTCC-MOS電池+RTCBAT經(jīng)過(guò)電阻R20

9、01經(jīng)過(guò)D2000產(chǎn)生+VCC_RTCD2000的作用:相當(dāng)是一個(gè)比較器,當(dāng)有電源工作時(shí)則+VCC_RTC由+3VA來(lái)提供.沒有則由C-MOS電池提供電阻R2001的作用:偵測(cè)電流大小,便于計(jì)算電池壽命電池使用年數(shù)=電池總?cè)萘?流經(jīng)電阻R2001的電流/24小時(shí)/365天+VCC_RTC的作用:用于南橋CLOCK起振電壓(南橋作開機(jī)條件) 維持C-MOS信息南橋開機(jī)條件之一返回南橋Pegatron Electrical Engineering DepartmentSB-CLOCK+VCC_RTC經(jīng)過(guò)三個(gè)電阻輸入給南橋,則輸出RTC-X1,RTC_X2給晶振X2000產(chǎn)生32.768KHz的頻率

10、反饋給南橋RTC_RST:復(fù)位C-MOS信息.返回南橋Pegatron Electrical Engineering DepartmentPM_PWRBTN#+3VA_EC經(jīng)過(guò)電阻到PWR_SW#,給PWR_SW#一個(gè)高電平按下SW5605,則PWR_SW#瞬間拉低南橋開機(jī)最后一個(gè)條件返回南橋Pegatron Electrical Engineering Department南橋開機(jī)條件南橋開機(jī)條件 +3VSUS PM_RSMRST# +VCC-RTC CLK(32.768KHz) PM_PWRBTN#PM_SUSB#PM_SUSC#南橋滿足上面5個(gè)條件后開始工作發(fā)出PM_SUSB#,PM_S

11、USC#PM_SUSC#比PM_SUSB#,先出來(lái)Pegatron Electrical Engineering DepartmentSUSC_EC# SUSB_EC1#PM_SUSC#,PM_SUSB#分別經(jīng)過(guò)電阻轉(zhuǎn)成SLP_S4_R,SLP_S3_R再輸入EC轉(zhuǎn)成SUSC_EC#和SUSB_EC1# 關(guān)于S3和S4兩種休眠請(qǐng)見附件點(diǎn)擊Pegatron Electrical Engineering DepartmentSUSC#_PWR SUSB#PWR SUSB_EC1#經(jīng)過(guò)電阻R9105轉(zhuǎn)換成SUSB#_PWR(開啟+?VS) SUSC_EC經(jīng)過(guò)電阻R9104轉(zhuǎn)換成SUSC#_PWR (

12、開啟+?V) 這兩個(gè)信號(hào)主要做后面電壓開啟和Enable信號(hào)Pegatron Electrical Engineering Department+12V +5V +3V并聯(lián)N-MOS管作用：保護(hù)提供高電流3.65APegatron Electrical Engineering Department+12VS +5VS +3VS并聯(lián)N-MOS管作用：保護(hù)提供高電流4.135APegatron Electrical Engineering DepartmentDDR_PWRGD“除二”運(yùn)算線路輸入電壓Enable信號(hào)反饋線路返回WER GOOD DETECTERPegatron Electrica

13、l Engineering Department1.05V_1.5V_PWRGDEnable信號(hào)輸入電壓集成H-L side 點(diǎn)擊反饋線路返回WER GOOD DETECTERPegatron Electrical Engineering Department+1.25VS比較器 點(diǎn)擊U8400工作電壓參考電壓控制信號(hào)，休眠時(shí)關(guān)閉電壓反饋線路Pin3電壓=100K/（100K+200K）*+2.5V=1.25V當(dāng)pin2反饋電壓大于pin3時(shí)pin1輸出低電平，相反則輸出高電平，利用反饋電壓來(lái)控制N-MOS的開啟和關(guān)閉ALL_SYSTEM_PWRGD這里是個(gè)保護(hù)電路，上面四個(gè)PWRGD為高電平

14、，才會(huì)有ALL_SYSTEM_PWR.發(fā)送到EC二極管在這里的作用:保護(hù)SUS_PWRGD,當(dāng)其他PWRGD有問(wèn)題時(shí)不會(huì)拉低SUS_PWRGD,因?yàn)橹挥蠸US_PWRGD工作正常后南橋才能工作,來(lái)開啟其他電壓這時(shí)VRM_PWRGD還沒有產(chǎn)生PWR_OK_VGA 由顯卡接口發(fā)出Pegatron Electrical Engineering DepartmentCPU_VRON輸入電壓+3VS,其他電壓是已經(jīng)輸入了的,+3VS是南橋工作后才產(chǎn)生的.Pegatron Electrical Engineering DepartmentVCORE輸入電壓+5VSUS,AC_BAT_SYSCPU_VRON

15、 Enable信號(hào)輸入電壓+3VS放大點(diǎn)擊放大點(diǎn)擊反饋線路放大點(diǎn)擊使用4組H-L side的作用：因?yàn)镃PU工作功率比較大，根據(jù)P=UI，這里就是為了產(chǎn)生高電流35APegatron Electrical Engineering DepartmentFORCE_OFF#與門工作原理:只要有輸入低電平則輸出為低電平,如果PWRGD有問(wèn)題輸出低電平,則FORCE_OFF#拉低,則會(huì)關(guān)機(jī). FOREC_OFF點(diǎn)擊Pegatron Electrical Engineering Departmentn ENDPegatron Electrical Engineering Department附附:Hig

16、h-Low Side原理:芯片先給High Side的柵極一個(gè)高電平,使其打開電壓下來(lái),同時(shí)給Low Side的柵極一個(gè)低電平使其關(guān)閉,產(chǎn)生電壓經(jīng)過(guò)電感給電容充電,當(dāng)電壓過(guò)高時(shí),則High-Low Side相反工作使電壓拉低,維持一個(gè)穩(wěn)定的電壓輸出.特點(diǎn):提高電流,穩(wěn)定電壓返回附附:休眠方式休眠方式S3休眠動(dòng)作流程：利用鍵盤（FN+F1）EC，透過(guò)LPC_AD0.3發(fā)送到南橋,南橋?qū)USB#拉低,SUSB#所控制的電源全部拉低,(SUSC#控制電源還在)開始進(jìn)行休眠S4休眠動(dòng)作流程:在WINDOWS狀態(tài)下按開始菜單,再選擇休眠,HDD通過(guò)傳輸信號(hào)線到南橋,南橋再把SUSB#和SUSC#拉低,

17、SUSB#,SUSC#控制的電壓全部拉低,開始進(jìn)行休眠休眠后喚醒(不分S3或S4)可分為兩種(1)由鍵盤按任一鍵經(jīng)EC發(fā)KBCRSMKBCRSM 透過(guò)切換線路將PM_PWRBTN# 拉LO 發(fā)送到南橋南橋?qū)USB# 或SUSB#&SUSC 發(fā)高,SUSB# SUSC# 將后續(xù)電壓開啟完成喚醒動(dòng)作 (2)由PWR_SW#透過(guò)切換線路將PM_PWRBTN# 拉LO 發(fā)送到南橋,南橋?qū)USB# 或SUSB#&SUSC 發(fā)高,SUSB# SUSC# 將后續(xù)電壓開啟,完成喚醒動(dòng)作返回Pegatron Electrical Engineering Department附:集成High-

18、Low Side返回pin1 pin2接電壓相當(dāng)于H side pin58Pin3 Low side的柵極相當(dāng)于L side pin4Pin4接地相當(dāng)于L side pin13Pin57輸出相當(dāng)與H side pin13,L side pin58Pin8 High side的柵極相當(dāng)于H side pin4H sideL sidePegatron Electrical Engineering Department附附:比較器比較器返回正極負(fù)極比較器工作原理: 1:當(dāng)正極大于負(fù)極時(shí),輸出電壓VCC OUT就等于輸入電壓VCC IN 2當(dāng)正極小于負(fù)極電壓時(shí),輸出電壓VCC OUT就等于接地GND+

19、 - VCC OUT=VCC IN+ - VCC OUT=GND比較器一般用于電路中都是固定正極(或負(fù)極)電壓電壓,利用VCC OUT 來(lái)控制負(fù)極(或正極)電壓GNDPegatron Electrical Engineering Department附附: VCORE IC-放大放大1CPU_VRON=1 :EC發(fā)出給VCORE IC的Enable信號(hào) PM_DPRSLPVR=1:CPU深度休眠模式的Enable 信號(hào) H_DPRSTP#=0:CPU正在深度休眠模式給CLOCK芯片的EnableVRM_PWRGD=1:VCORE POWER OK. PM_PSI#=0:CPU降頻時(shí)通知VCORE調(diào)低電壓PM_DPRSLPVR,H_DPRSTP#,CPU與南橋進(jìn)入降頻模式時(shí)通知VCORE調(diào)低電壓分別進(jìn)入S3和S4模式.CLK_EN#在此板上沒用上,而是使用EC發(fā)出.返回Pegatron Electrical Engin