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PDF PS3100 Data sheet ( Hoja de datos )
| Número de pieza | PS3100 | |
| Descripción | Fuel Gauge Only Module | |
| Fabricantes | Power Smart | |
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PS3100
Multi-chemistry Smart
Battery Manager Module
Features
• Standard sized modules for assembly into
custom and standard sized battery packs
• Designed to work with 2-4 cell series Li Ion
or 6-10 cell series Ni pack configurations
- Contains patented core calculation and
battery control algorithms for Li Ion
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and NiMH chemistries
• Can be programmed with application specific
cell parameters for NiMH and Li Ion
chemistries
• Fully compliant with industry standard
Smart Battery Data Specification V1.1a
- SMBus V1.1 with PEC / CRC-8
communication with system host
• High accuracy measurement of charge /
discharge current, voltage, and
temperature with on-chip 14-bit integrating
A/D
• Precise capacity reporting using
PowerSmart patented algorithms and 3D
battery cell models
• 3D models and “learned” parameters stored
in on board EEPROM; fully field re-
programmable via SMBus interface
• Extremely low power operation:
- Sleep Mode: < 10 uA typical
- Run Mode: < 500 uA typical
- Sample Mode < 250 uA typical
• Complete hardware and software
development tools available
• ESD protection – passes 8kV contact and
15kV air without capacity reset
PCB Assembly
Ordering Information
Pre-tested, fully assembled modules are
available:
PS3110 – NiMH module
PS3120 – Li Ion module
Please specify number of series cells when
ordering.
Quick Start
Follow these directions to assemble a pack with the PS3100 module.
Use standard precautions when handling static sensitive devices.
Modules should be connected to battery cells in the order indicated below to insure proper start-up
and operation. Wires should be attached to the modules first and then connected to the battery cells
as instructed.
The connection sequence is critical to successful use of the PS331 family of CMOS ASICs. The
negative cell string connection should always be connected first, followed by the cell string
positive connection. The remaining connections can then be made after the pack negative and
pack positive are securely connected to the module.
Updated 21 March 2001
Copyright PowerSmart, Inc., 2001
1
www.powersmart.com
1 page  
PowerSmart PS3100 Module Data Sheet
Optional Connections
An on-board NTC thermistor (R1) is used by the P3 for internal pack temperature measurements. This is
located as
shown in the diagram below. This sensor may be moved to another location in the battery pack if desired.
Connection points W10 and W11 may be used to install an off-board thermistor for remote temperature
monitoring. If an off-board thermistor is installed, R1 should be removed.
Top layer
R1
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R2
The R2 ‘pack thermistor’ or ‘T-pin’ signal is used by external devices, such as chargers, to determine the
chemistry of the battery pack or it’s temperature (using and external circuit.) The P3 module includes this
‘T-pin’ value at R2 as one of two values. As shown in the parts list, this may be either a NTC thermistor
(same as R1) for NiMH applications or it may be a 365 ohm resistor for Li Ion applications.
General Description
The PS3100 family of modules are complete fuel-gauge monitoring circuits without safety electronics and
are ready for simple integration into a NiMH or Li Ion battery pack. They are sized to be used in-battery to
monitor and control charge and discharge of a series/parallel battery configured for either 6 to 10-cell
NiMH batteries or for 2 to 4-cell Li Ion batteries. These modules can be configured to work with either
high-side or low-side Li Ion safety electronics.
Using just four external cell string connections, PowerSmart standard modules can be easily integrated in
a battery pack. An optional 5-pin self-wiping Advanced Battery Interconnect can be integrated as part of
the module assembly. The modules can fit between cylindrical cells or on the side of the pack with a
nominal additional increase in size. The on-board four LED display can be used for a five level Relative or
Absolute state-of-charge indicator.
The PS3100 family provides all of the SMBus and SBData protocols and data values ranging from state-
of-charge (fuel-gauging) information to alarm and charger instruction broadcasts.
Charge and discharge currents, battery pack and cell voltages, and pack temperature measurements are
done with the integrating dual-slope analog to digital converter at 10-bit to 14-bit resolution depending on
the measurement.
Calculations are done with the 8-bit RISC CPU core. Communications use a hardware master-slave
SMBus/I 2 C engine with byte-wise link to the CPU core. An 8K byte ROM and 128 bytes of RAM supply
the CPU with instructions, chemistry models and operating memory. An internal RC oscillator is
complemented with a low-cost, low-power external 32 kHz crystal for precise timing. External circuitry
controls a voltage microregulator to supply the IC with a nominal 3.3 Volts. Also included with the
external circuitry are thermistor conditioning and ESD suppression circuitry.
Updated 21 March 2001
Copyright PowerSmart, Inc., 2001
5
www.powersmart.com
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet PS3100.PDF ] | |
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