Service Manual
Trium 110
Version A
Date: 05/02
15/22
+
:
(
:
FAX
:
Mitsubishi Electric Telecom Europe S.A.
After Sales Services
Z.A. Pigeon Blanc, 35 370 St Germain du Pinel France
+33 (0)2 23 55 16 30
+33 (0)2 99 75 71 62
9.1.2
Battery management
9.1.2.1
Block Diagram / Description
Regarding the CUPID, the battery is Li-Ion 800 mAh, 3.8 V, whereas the external power supply is 5.7 V, 600 mA nominal.
IPD
charger
Base Band
Regulator
+
NiMH
Battery
3.6 V / 800 mAh
IPD
regulators
Radio
PA
I charge
5.7 V nominal
EXPS:
AC/DC
CLA
HF kit
3.6 V nominal
SPI interface
When an external power supply is
plugged, the voltage of
EXPS
2
is 5.7 V,
therefore battery does not supply
anymore the Base Band (via IPD
regulators). Indeed, the voltage from the
EXPS
is always greater than the one from
battery, the diode D100 is no more
opened.
Nevertheless, some parts of the radio are
only supplied by the battery.
Battery presence is accessible in CHGM
IPD register. The battery level information
is accessible in an A/D converter in One-
C. It is also available in CHGM IPD
register, these information are given by
range only for range control.
The battery temperature information (TH) is given by thresholds in IPD CHGM register. This information are used only for
charge control.
Bypass is Activated when battery is less than 3.45 V.
The regulator IC103 is to make the power supply 2.5RTC for the One C.
9.1.2.2
Charging process
The IPD charger, supplied by EXPS achieves the charge. The charge process is done by an internal algorithm controlled by
S/W.
The 1C current charge is fixed by hardware to 420 mA, so that a complete charge duration is about 130 min at room
temperature.
Charging process follows these successive phases:
1.
Pre charge
:
This phase is mandatory before the rapid charge to verify that battery operation is normal (normal battery voltage and
temperature). Charge current during this phase is 52 mA (
8
1
C). If the battery voltage is higher than 3.4 Volts, the S/W
launches IPD charger
in Rapid charge
except if the temperature is not between 0°C and 55°C.
2.
Rapid charge
:
Charge current during this phase is 420mA. If battery temperature becomes abnormal IPD charger start at low current
charge
( )
C
20
1
, while temperature comes back normal (between 0°C and +55°C) during 15 min.
Full charge detection ends Rapid charge. Full charge is detected by S/W when one out of the three evens occurs:
•
Battery voltage begins to decrease
(
)
V
∆
−
•
Battery voltage stops to increase during 20 min
( )
V
∆
•
Rapid charge time is expired (150 min)
2
Ex
ternal
P
ower
S
upply
