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After Sales Technical Documentation

Desktop Charger CHH­2

Original 50/96

NMP Part No. 0275272

After Sales Desktop Charger CHH­2 Technical Documentation

CONTENTS
Desktop Charger CHH­2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Technical Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Charging Indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Charge States and Charge Control . . . . . . . . . . . . . . . . . . . External Signals and Connections . . . . . . . . . . . . . . . . . . . . Fast Travel Charger Connector X130 . . . . . . . . . . . . . . . Phone Charging Connectors X110, X111 . . . . . . . . . . . . Spare Battery Connector X120 . . . . . . . . . . . . . . . . . . . . Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Control Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Prosessor Input/Output Signals . . . . . . . . . . . . . . . . . . . . . . Processor A/D Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Charging the Spare Battery . . . . . . . . . . . . . . . . . . . . . . . . . . Discharging the Spare Battery . . . . . . . . . . . . . . . . . . . . . . . Watchdog Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Layout and Foil Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Parts List (Version 1.6) Code: 0200184 . . . . . . . . . . . . . . . . Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Assembly Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ­3 ­3 ­3 ­3 ­4 ­4 ­4 ­5 ­5 ­5 ­5 ­6 ­6 ­6 ­6 ­7 ­7 ­7 ­9 ­ 10 ­ 11 ­ 12 ­ 15 ­ 15

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After Sales Technical Documentation Desktop Charger CHH­2

Desktop Charger CHH­2
General
The CHH­2 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 (ACH­4). This must be connected to the d.c. connector, X130.

Technical Summary
Operation
The device has a d.c. plug input connector for ACH­4 charger and 2­ and 4­pin 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 CHH­2. 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.

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Charging Indication
Charge is indicated with two dual­colors led`s, one for the phone and one for the extra battery pack. The liquid­crystal display of the phone also contains a three­bar 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. Green spare battery led indicates that the battery is full. Flashing red spare battery led indicates that a discharge cycle is activated.

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.

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After Sales Technical Documentation Desktop Charger CHH­2

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: 1 2 Name: VDC GND Description: Supply voltage input Common ground

Phone Charging Connectors X110, X111 Pin: X110 X111 Name: VC PDET/GND Description: Charge voltage output Charge detect/phone common ground

Spare Battery Connector X120 Pin/X120: Pin/out: 6, 7, 8 5 4 input 1, 2, 3 1 2 3 4 Name: VBAT BSI BTEMP GND Description: Positive terminal of battery Battery size indicator Battery temperature sensing Common ground

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Circuit Description
The DC2 desktop charger module consists of microcomputer based control logic for spare battery charging and discharging. It also has power outlet for transportable phone.

Control Logic
Charging is controlled by processor D150. It is a single­chip type controller incorporating RAM, ROM, A/D converter, and a multifunction timer/ counter.

Prosessor Input/Output Signals
Name: PA0 PA1 PA2 PA3 PA4/DBIN PA5/DISW PA6/BSW PC7 Function: Phone LED control, green: "1" Phone LED control, red: "1" Spare battery LED control, green: "1" Spare battery LED control, red: "1" Discharge button input, "0": start discharge Discharge control output, "1": discharge enabled Spare battery charge control, "0": charge disabled, "1": rapid charge, PWM: pulsed mode Watchdog reset output

Processor A/D Inputs
Name: AN0/VBATL Function: Battery voltage · range: 0...11 V · resolution: 43 mV/bit High resolution battery voltage · range 7...11 V · resolution: 16 mV/bit Phone current detect · PDET = "1" for A/D value higher than 5 · PDET = "0" for A/D value 5 of or less Battery temperature, 27 k pull­up resistor to +5 V reference voltage Battery size, 100 k pull­up resistor to +5 V reference voltage Original 50/96

AN1/VBATH

AN2/PDET

AN3/BTEMP AN4/BSI

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AN5/CHVOL AN7/LIREF

Charger voltage detection Lithium reference voltage input · range: 0...5 V · resolution: 19.5 mV/bit

Charging the Spare Battery
Charging current for the spare battery is fed in via switching transistor V130 and Schottky diode V131. The transistor is controlled by the processor (BSW line). When the transistor is on, a constant current is supplied to the battery. This is the rapid charging mode. In the pulsed charging mode, charging current is adjusted by pulsing this rapid charge current. Battery voltage is measured through resistor divider R143/R144 (100/121 kohm). The range measured is 0 to 11 V; a voltage variation of 43 mV can be detected. For improved resolution, i.e. rapid charge cut off, operational amplifier N140 is added. This amplifies the battery voltage by a factor of (1 + 100 kohm/56 k) and compares the result to a +5 V reference supply. The A/D converter receives a battery voltage range of 7.0 to 11 V; a better resolution of 16 mV results. Battery size is determined by reading the BSI line state. This is pulled to +5 V reference voltage by R147 (100 k). In the battery pack a "size" resistor is connected between BSI and GND. Temperature is measured over the BTEMP line. This line is pulled to +5 V reference voltage by R145 (27 k). In the battery pack an NTC resistor is connected between BTEMP and GND. Because the phone and the spare battery cannot be charged at the same time the charging current of the phone must be detected. This is done at the A/D input AN2 (PDET). The charging current for the phone is directed through series diode V114. If the voltage drop across the diode is higher than 100 mV (corresponds to A/D value of 5), charging current is flowing to the phone. The CHH­2 desktop charger has two dual­colour LEDs to indicate the charging states of the phone and the spare battery.

Discharging the Spare Battery
The desktop charger is also provided with a discharge function. This is activated by pressing a discharge switch on top of the charger. The spare battery is then discharged before charging. Resistors R181­R188 determines the discharge current which is fed through switching transistor V134 controlled by processor over the DISW line (pin 64). The battery is discharged to 5 V and thereafter charged normally. The state of the discharge switch is read via the DBIN line (pin 63).

Watchdog Circuit
The processor generates positive pulses to output PC7 (pin 18). These pulses are received by transistor V201 discharging capacitor C161. The

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capacitor is charged through resistor R163. This voltage is fed to regulator N100 shutdown input (pin 3) through transistor V162.The 5V reference supply is generated by regulator N100.If the processor stops the voltage across the capacitor increases and the regulator is switched off.

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Block Diagram

PHONE CHARGING 800mA OUT CONNECTOR (X110) VC PDET/GND

R

GND RAPID CHARGER CONNECTOR (X130) 1 3 2

GND PHONE CHARGE INDICATION

RED/GREEN LED

MICROPROCESSOR/CONTROL LOGIC
SPARE BATTERY CONNECTOR (X120) VBAT BSI BTEMP GND

A/D­INPUTS
PHONE DETECT CHARGER VOLTAGE BATTERY VOLTAGE BATTERY SIZE BATTERY TEMP. DISCHARGE START

D­OUTPUTS
CHARGE CONTROL PHONE LED1 PHONE LED2 SPARE BAT.LED1 SPARE BAT.LED2 DISCHARGE CONTROL

SPARE BATTERY CHARGE INDICATION

RED/GREEN LED R GND

DISCHARGE START BUTTON

GND

GND

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Circuit Diagram

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Layout and Foil Diagrams

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Parts List
ITEM R100 R106 R107 R108 R109 R110 R111 R117 R130 R131 R132 R133 R134 R135 R136 R138 R140 R141 R142 R143 R144 R145 R146 R147 R148 R149 R150 R151 R152 R153 R154 R155 R156 R157 R158 R160 R161 R162 R163 R164 R170 R171 R172

(Version 1.6) DESCRIPTION Chip resistor Chip jumper Chip resistor Chip resistor Melf resistor Melf resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Melf resistor Melf resistor Chip resistor Melf resistor Melf resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor

Code: 0200184 VALUE 47 k 22 22 120 120 27 k 10 47 k 470 3.3 k 470 470 10 k 47 k 47 k 100 k 56.2 k 47 k 100 k 121 k 27 k 47 k 100 k 47 k 3.3 k 3.3 k 100 k 220 220 3.3 k 3.3 k 3.3 k 3.3 k 33 k 47 k 10 k 220 2.2 M 2.2 M 56 k 12 k 47 k TYPE 5 % 0.1 W 0805 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 1 % 0.2 W 0204 1 % 0.2 W 0204 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 1 % 0.2 W 0204 1 % 0.2 W 0204 5 % 0.1 W 0805 1 % 0.2 W 0204 1 % 0.2 W 0204 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 5 % 0.1 W 0805 1 % 0.1 W 0805 1 % 0.1 W 0805 5 % 0.1 W 0805 Original 50/96

CODE 1413603 1412286 1411669 1411669 1415872 1415872 1412609 1413829 1413603 1412310 1414029 1412310 1412310 1412430 1413603 1413603 1416160 1416040 1413603 1416160 1416202 1412609 1413603 1413635 1413603 1414029 1414029 1413635 1413924 1413924 1414029 1414029 1414029 1414029 1412729 1413603 1412430 1413924 1414244 1414244 1414533 1414477 1413603

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After Sales Technical Documentation Desktop Charger CHH­2

R181 R182 R183 R184 R185 R186 R187 R188 R191 R192 R193 R198 C102 C103 C104 C105 C129 C130 C131 C132 C133 C134 C135 C136 C137 C140 C141 C142 C143 C150 C151 C152 C153 C154 C155 C160 C161 C170 B150 V114 V129 V130 V131 V132 V134 V140 V141

1415576 1415576 1415576 1415576 1415576 1415576 1415576 1415576 1416107 1416040 1411490 1411490 2604209 2307816 2309475 2604110 2310336 2310336 2310336 2310336 2310336 2307816 2310336 2310336 2310336 2307816 2307816 2307816 2307816 2307816 2310343 2310343 2604209 2307816 2310738 2307816 2604209 2307816 4500822 4110074 4100077 4210092 4110074 4200917 4200226 4100567 4106992

Melf resistor Melf resistor Melf resistor Melf resistor Melf resistor Melf resistor Melf resistor Melf resistor Melf resistor Melf resistor Chip resistor Chip resistor Tantalum cap. Ceramic cap. Ceramic cap. Tantalum cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Tantalum cap. Ceramic cap. Ceramic cap. Ceramic cap. Tantalum cap. Ceramic cap. Crystal Schottky diode Schottky diode Transistor Schottky diode Transistor Darl. transistor Sch. diode x 2 Zener diode

301 301 301 301 301 301 301 301 5.62 k 56.2 k 100 100 1.0 u 47 n 47 n 10 u 18 p 18 p 18 p 18 p 18 p 47 n 18 p 18 p 18 p 47 n 47 n 47 n 47 n 47 n 22 p 22 p 1.0 u 47 n 4.7 n 47 n 1.0 u 47 n 11.0592 M STPS340U BAS85 BCP69 STPS340U BC848B/BCW32 BCV27 BAS70­04 BZX84

1 % 0.2 W 0204 1 % 0.2 W 0204 1 % 0.2 W 0204 1 % 0.2 W 0204 1 % 0.2 W 0204 1 % 0.2 W 0204 1 % 0.2 W 0204 1 % 0.2 W 0204 1 % 0.2 W 0204 1 % 0.2 W 0204 5 % 0.12 W 1206 5 % 0.12 W 1206 20 % 16 V 3.2x1.6x1.6 20 % 25 V 0805 10 % 50 V 1206 20 % 25 V 7.3x4.4x2.8 5 % 50 V 0805 5 % 50 V 0805 5 % 50 V 0805 5 % 50 V 0805 5 % 50 V 0805 20 % 25 V 0805 5 % 50 V 0805 5 % 50 V 0805 5 % 50 V 0805 20 % 25 V 0805 20 % 25 V 0805 20 % 25 V 0805 20 % 25 V 0805 20 % 25 V 0805 5 % 50 V 0805 5 % 50 V 0805 20 % 16 V 3.2x1.6x1.6 20 % 25 V 0805 20 % 50 V 0805 20 % 25 V 0805 20 % 16 V 3.2x1.6x1.6 20 % 25 V 0805 CL30PF H=3.6MM 40 V 3 A SOD6 30 V 200 mA SOD80 pnp 20 V 1 A SOT223 40 V 3 A SOD6 npn 30 V 100 mA SOT23 npn 30 V 300 mA SOT23 70V15 mA SERSOT23 5 % 8.2 V 0.3 W SOT23

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After Sales Desktop Charger CHH­2 Technical Documentation

V152 V153 V154 V155 V162 V170 V181 V182 V183 V184 V201 D150 N100 N140 S130 X120

4200917 4200917 4200917 4200917 4200917 4100567 4864378 4864380 4864378 4864380 4200917 4370104 4301062 4309576 5200914 5431702 5402366 9853917 9853917

Transistor BC848B/BCW32 Transistor BC848B/BCW32 Transistor BC848B/BCW32 Transistor BC848B/BCW32 Transistor BC848B/BCW32 Sch. diode x 2 BAS70­04 Led Green Led Red Led Green Led Red Transistor BC848B/BCW32 IC, ROM MCU16/8 IC, regulator LP2951AC IC, 2 x op.amp. TLC27M2I Push button switch 2­pole 6x7 smd Flexfoil connect 1x08 1mm smd Power jack 12v 0.5a for 3.8mmplug PCB DC2 91.5X56.3X1.6 D 4/PA PC board DC2

npn 30 V 100 mA SOT23 npn 30 V 100 mA SOT23 npn 30 V 100 mA SOT23 npn 30 V 100 mA SOT23 npn 30 V 100 mA SOT23 70V15 mA SERSOT23 V 0805 2.2 V 0805 V 0805 2.2 V 0805 npn 30 V 100 mA SOT23 QFP64 SO8S SO8 SMD 3.8MMPLUG 91.5x56.3x1.6 d 4/pa

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Exploded View

Assembly Parts
ITEM 1 2 3 4 5 6 7 8 C1 Q'TY CODE 9460089 9450259 5461000 9460088 9450260 6501067 6293012 9380154 0200184 DESCRIPTION Discharge button Front cover Battery connector Light guide Bottom cover Adhesive foot PT screw Label blank Charging module DC2 VALUE, TYPE 4D 22992 1D 22990 1x04 3D 22993 1D 22991 d=8.0 h=2.0 KB22x8 FeZn 4D 22419

4 3

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