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PICREF-1 Datasheet

  • PICREF-1

  • PICREF-2 Documentation

  • 687.65KB

  • 65頁(yè)

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M
INTRODUCTION
PICREF-2
PICREF-2 OVERVIEW
The Microchip Technology PICREF-2 Intelligent Battery
Charger (IBC) Reference Design offers a ready-made
battery charger solution. This Reference Design is tar-
geted to battery charger applications such as
camcorders, portable audio equipment, portable
phones, and portable power tools.
With the PICREF-2 Reference Design, the user will be
able to simply pick their complete battery charging
system by completing the steps listed:
1.
2.
Pick the required battery management features
from the modular source code provided.
Pick the critical battery pack parameters and
modify the global constants to those speci鏗乧a-
tions.
Intelligent Battery Charger Reference Design
Typically, simple battery chargers do not provide the
intelligence to charge different battery technologies or
batteries with the same technology but different volt-
ages and capacities. At best, this may leave the battery
improperly charged. At worst, it can pose a serious
safety hazard. A microcontroller can provide the intelli-
gence to overcome these problems.
In addition to intelligent control, the microcontroller can
provide a low-cost, 鏗俥xible solution for charging batter-
ies. Complete battery charging applications may be
developed quickly using a microcontroller. Add to this
the serial communication capability of the microcontrol-
ler, real-time data logging and monitoring is possible.
Simple battery chargers use all analog components to
accomplish their function. However, by using a micro-
controller, a battery charger can be made intelligent.
Microcontroller Bene鏗乼s
鈥?Flexibility to handle different technologies, volt-
ages and capacities.
鈥?Variable Voltage Generation Control
鈥?Charge/Discharge Multiple Battery Packs
鈥?鈥淲indowed鈥?A/D for High Resolution
The hardware design contains the necessary circuitry
to support charging and discharging algorithms, charge
termination methods, and RS-232 communications.
The modular source code is written in C and consists of
the charge termination algorithms, discharge algorithm,
interdevice communications, and RS-232 communica-
tions modules.
The PC based software provides a means for
requesting and displaying battery status information.
PICREF-2 Key Features
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Compatibility Across Battery Technologies
Low Cost
Flexible Development Environment
Fast Charge Rate
High Charge Current Capability
High Discharge Current Capability for Condition-
ing
鈥?Real-Time Debug
鈥?Data Logging
鈥?User Selectable Embedded Charge Termination
Algorithms
Information contained in this publication is intended through suggestion only and may be superseded by updates. No
representation or warranty is given and no liability is assumed by Microchip Technology Inc. with respect to the accu-
racy or use of such information, or infringement of patents arising from such use or otherwise. It is the responsibility of
each user to ensure that each Battery Charger is adequately designed, safe, and compatible with all conditions
encountered during its use. 鈥淭ypical鈥?parameters can and do vary in different applications. All operating parameters,
including 鈥淭ypicals鈥? must be validated for each customer application by the customer's technical experts. Use of
Microchip's products as critical components in life support systems is not authorized except with express written
approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any intellectual property rights.
茫
1997 Microchip Technology Inc.
DS30451C-page 1

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    PICREF-2 Documentation
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