Nokia 6310i Service Manual page 37

PAMS Technical Documentation
WR WKH 8(0 YLD WKH 3:%
Transceiver
0R22
VCHAROUT
VBATREGS
10n 1u
&RQQHFWLQJ D FKDUJHU WR WKH WHOHSKRQH FUHDWHV D YROWDJH 9&+ RQ WKH 8(0 9&+$5 LQSXW
:KHQ WKH 9&+ OHYHO LV GHWHFWHG WR ULVH DERYH WKH 9&+
FKDUJLQJ VWDUWV /HYHO FURVVLQJ GHWHFWLRQ RI WKH 9&+$5 OLQH LV XVHG WR JHQHUDWH V\QFKUR
QL]LQJ SXOVHV IRU 8(0©V VWDWH PDFKLQH IRU FRQWURO RI UHFWLILHU W\SH FKDUJHUV HJ $&3
1RWH )URP +: ,'  RQZDUG WKH &+5*&75/ ZLOO EH JURXQGHG RQ WKH ¦SXVKLQ§
FKDUJHU FRQQHFWLRQ ZLWK WKH HIIHFW WKDW ZLUH FKDUJHUV ZLOO EH WUHDWHG OLNH 
ZLUH FKDUJHUV &DUNLWV DQG 'HVNVWDQGV ZLOO VWD\ WKH VDPH DV SUHYLRXVO\
Figure 6 Detection of charger / generation of charger synchronization pulses
,Q FDVH WKH PDLQ EDWWHU\ LV IXOO\ GLVFKDUJHG DQG WKH 8(0 VXEVHTXHQWO\ LV ZLWKRXW SRZHU
LH LQ 12B6833/< RU %$&.83 PRGH WKH VWDUWXS FKDUJLQJ FLUFXLWU\ LV LQ FRQWURO JLYLQJ
WKH SRVVLELOLW\ WR GHWHFW D FKDUJHU DQG HQJDJH FKDUJLQJ ,I WKH 9%$7 OHYHO LV GHWHFWHG WR
EH ORZHU WKDQ WKH PDVWHU UHVHW YROWDJH 9
ZLWK D FRQVWDQW FXUUHQW RI  P$ XQWLO 9%$7 H[FHHGV 9
D FKDUJLQJ SRLQW RI YLHZ QRUPDO 3:0 FKDUJLQJ VLWXDWLRQ UHVXPHV $ 3:0 VLJQDO LV JHQ
HUDWHG E\ WKH GLJLWDO SDUW RI WKH 8(0 ZKLFK VRXUFHV WKH &+$&21 7KH IUHTXHQF\ RI WKH
VLJQDO FDQ EH HLWKHU  +] RU  +] ,I WKH FRQQHFWHG FKDUJHU LV RI D ZLUH NLQG HJ $&3
 WKH 3:0 VLJQDO KDV WKH IUHTXHQF\  +] ,I WKH FKDUJHU RQ WKH RWKHU KDQG LV D ZLUH
W\SH HJ $&3  WKH VZLWFK LV OHIW RQ SHUPDQHQWO\ DQG WKH  +] 3:0 FRQWURO VLJQDO
URXWHG WR WKH FKDUJHU LQ RUGHU WR SURGXFH D FRQVWDQW YROWDJH )LJXUH  VKRZV D VWDWH GLD
JUDP RI WKH 3:0 FKDUJH VLWXDWLRQ
,VVXH  $PHQG  6HSW 
UEM
VCHAR
VCHARIN
1n
CHACON
PWM
Figure 5 Charging configuration
1RNLD &RUSRUDWLRQ
33R/100MHz
1.5A
10k
10k
10n
WKUHVKROG
(7
WKH &+$&21 ZLOO FKDUJH WKH EDWWHU\
0675
 :KHQ WKLV KDSSHQV IURP
0675
NPL-1
2 - Baseband System
Charger
VCHAR
Filter
cap.
CHRG_CTRL
Zmin. 20k
Pull-
GND
down
100k
E\ &+$&21
 9GF
3DJH 
1000uF
max.