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ETC - QuickSaver Charge Controller for Nickel-Cadmium and Nickel-Metal Hydride Batteries

Numéro de référence ICS1702
Description QuickSaver Charge Controller for Nickel-Cadmium and Nickel-Metal Hydride Batteries
Fabricant ETC 
Logo ETC 





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ICS1702 fiche technique
ICS1702
QuickSaver® Charge Controller for Nickel-Cadmium
and Nickel-Metal Hydride Batteries
General Description
The ICS1702 is a CMOS device designed for the intelligent charge
control of either nickel-cadmium (NiCd) or nickel-metal hydride
(NiMH) batteries. The controller uses a pulsed-current charging
technique together with voltage slope and/or temperature slope
termination. The ICS1702 employs a four stage charge sequence
that provides a complete recharge with-out overcharging. The
controller has nine user-selectable charge rates and six user-
selectable auxiliary modes available for customized charging
systems.
The ICS1702 monitors for the presence of a battery and begins
charging when a battery is installed. Voltage and temperature are
measured to ensure a battery is within fast charge conditions before
charge is initiated.
Applications
Battery charging systems for:
- Portable consumer electronics
- Power tools
- Audio/video equipment
- Communications equipment
- Portable medical electronics
- Wireless handsets
Features
Multiple charge termination methods include:
- Voltage slope
- Temperature slope
- Maximum temperature
- Charge timer
Four stage charge sequence:
- Soft start charge
- Fast charge
- Topping charge
- Maintenance charge
Reverse-pulse charging available in all charge stages
Nine programmable charge rates between 15 minutes (4C) and
four hours (C/4)
Out-of-temperature range detection
- Hot battery: charger shutdown
- Cold battery: low current charge
Continuous polling mode for battery detection
Six auxiliary modes include:
- Discharge-before-charge
- Ten hour C/10 conditioning charge
- Direct to C/40 maintenance charge
- Charging system test provided through controller
Adjustable open circuit (no battery) voltage reference
Block Diagram
CHARGE
SELECT
OPEN CIRCUIT
REFERENCE
VOLTAGE
SENSE
TERMINATION
SELECT
TEMPERATURE
SENSE
MODE SELECT
RESET
RC
HOT
0.5V
ADC
COLD
MICROCODE CONTROL
PROCESSOR
OUTPUT
CONTROL
RAM
ROM
POLLING
MODE LED
CHARGE
MODE LED
MAINTENANCE
MODE LED
TEMPERATURE
STATUS LED
CHARGE
CONTROL
DISCHARGE
CONTROL
OSCILLATOR
QuickSaver ®® is a registered trademark of Galaxy Power, Inc.

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