Compal NBLB2 - Charger; Over Voltage Protection

NBLB2 Service Manual
71
3.5 Charger
Controlled by KB926 microprocessor from motherboard
Temperature sense capability for the battery (charge active between 0°C ~
40°C)
Fast charge current 3Amps (max.) for Li-Ion Battery at system off, approach
25W fast charge at system ON. (Depend on system load)
Trickle charge: Typical 600mA pre-charge current for Li-Ion Battery. All trickle
charge are controlled by KB926.
Charge termination: When Fully-Charge bit is set, charger is terminated by
KB926
When system is turned off, the charge time is 3.5 hrs typically from empty to full
for Li-Ion 6 cell battery
Other battery services are presented by KB926 microprocessor includes
maximum charging timer, charging temperature range etc.
Charger power:
Constant current mode: 3.0A±8%
Constant adapter current mode: 4.303A±6% (For 90W system)
3.6 Charger
+3VALWP: >10.62A.
+5VALWP: >8.4A.
CPU_CORE: >48A.
+1.8VP: >10.668A.
+1.5VSP: >11A.
+1.05VSP: >11A
VGA CORE >26.64A
3.7 OVER Voltage protection:
+5VALWP: 112.5%~117.5%
+3VALWP: 112.5%~117.5%
+1.5VP: 111%~119%
+1.05VCCP: 111%~119%
+ VGA_COREP: 111%~119%
+ CPU_CORE: VO>1.675V