Nokia 2110i, 2110 Desktop Charger 2
After Sales Technical Documentation
Desktop Charger
CHH–2
Original 50/96
NMP Part No. 0275272
After Sales
Desktop Charger CHH–2
CONTENTS
Desktop Charger CHH–2 – 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General – 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Summary – 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation – 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging Indication – 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Specifications – 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charge States and Charge Control – 4. . . . . . . . . . . . . . . . . . .
External Signals and Connections – 5. . . . . . . . . . . . . . . . . . . .
Fast Travel Charger Connector X130 – 5. . . . . . . . . . . . . . .
Phone Charging Connectors X110, X111 – 5. . . . . . . . . . . .
Spare Battery Connector X120 – 5. . . . . . . . . . . . . . . . . . . .
Circuit Description – 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Logic – 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Prosessor Input/Output Signals – 6. . . . . . . . . . . . . . . . . . . . . .
Processor A/D Inputs – 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging the Spare Battery – 7. . . . . . . . . . . . . . . . . . . . . . . . . .
Discharging the Spare Battery – 7. . . . . . . . . . . . . . . . . . . . . . .
Watchdog Circuit – 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Block Diagram – 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Diagram – 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Layout and Foil Diagrams – 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List (Version 1.6) Code: 0200184 – 12. . . . . . . . . . . . . . . .
Exploded View – 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assembly Parts – 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Documentation
Page – 2
Original 50/96
After Sales
Technical Documentation
Desktop Charger CHH–2
General
The CHH–2 desktop charger is designed for the charging of the handportable phone and a spare battery. In a standard configuration rapid charging is possible by connecting the desktop charger to an ac power outlet
via a suitable constant current ac adapter (ACH–4). This must be connected to the d.c. connector, X130.
Desktop Charger CHH–2
Technical Summary
Operation
The device has a d.c. plug input connector for ACH–4 charger and 2– and
4–pin output connectors for the phone and extra battery. Charging takes
place at a battery temperatures of 5...45 Centigrade. Charge control of
the phone is done with phone microprocessor and charge control of extra
battery is done with separate microprocessor located in a desktop stand.
Phone is always charged first, then extra battery.
A battery gives better capacity if it is occasionally discharged completely.
User can do this by using the ‘deep discharge‘ –feature of CHH–2. This
feature is provided only extra battery slot and pressing the ‘discharge‘
–button. The extrabattery will then automatically be discharged and
charged to full. If this button is pressed twice then the discharge function
is cancelled.
Original 50/96
Page – 3
After Sales
Desktop Charger CHH–2
Charging Indication
Charge is indicated with two dual–colors led‘s, one for the phone and one
for the extra battery pack. The liquid–crystal display of the phone also
contains a three–bar battery display.
Led‘s are dim when there is no phone or extra battery connected.
Right led for handportable:
Red phone led indicates a fast charge mode of the phone battery.
Green phone led indicates a tricle (maintenance) charge mode of the
phone battery; with steady lcd battery display it means that the battery is
full. If the led is green but the battery display is scrolling, charging is disabled due to battery temperature (less than +5 or more than +45 Centigrade).
Left led for spare battery:
Red spare battery led indicates that the battery is not full; either there is a
fast charge mode active or charging is disabled due to a battery temperature or to fast charge mode of the phone.
Technical Documentation
Green spare battery led indicates that the battery is full.
Flashing red spare battery led indicates that a discharge cycle is acti-
vated.
Technical Specifications
Charge States and Charge Control
Charge current for the phone is supplied through a series switch transistor in the phone. When this transistor is on the charger is supplying a
constant current to the phone. This is the rapid charge mode.
When the transistor is off no current is supplied to the phone and the
charger is in the constant voltage mode.
Having been charged up in the rapid charge mode, the battery is kept in
full charge using pulsed charging, i.e. switching power alternately on and
off at a variable duty cycle and a frequency of a few Hz.
The desktop charger is also provided with control logic for spare battery
charging, which is allowed when no phone is connected or when the
phone is in the pulsed charge mode.
Page – 4
Original 50/96
After Sales
Technical Documentation
External Signals and Connections
The charger has three external connectors, the AC fast travel charger
connector, the phone charging connector and the spare battery connector.
Fast Travel Charger Connector X130
Pin: Name: Description:
1 VDC Supply voltage input
2 GND Common ground
Phone Charging Connectors X110, X111
Pin: Name: Description:
X110 VC Charge voltage output
Desktop Charger CHH–2
X111 PDET/GND Charge detect/phone common ground
Spare Battery Connector X120
Pin/X120: Pin/out: Name: Description:
6, 7, 8 1 VBAT Positive terminal of battery
5 2 BSI Battery size indicator
4 3 BTEMP Battery temperature sensing
input
1, 2, 3 4 GND Common ground
Original 50/96
Page – 5
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