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PDF CBC5300 Data sheet ( Hoja de datos )
| Número de pieza | CBC5300 | |
| Descripción | EnerChip EH Energy Harvesting Module | |
| Fabricantes | Cymbet | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de CBC5300 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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Preliminary
www.DataSheet4U.com
EnerChip™ EH CBC5300
EnerChip™ EH Energy Harvesting Module
Overview
The EnerChip EH CBC5300 is a self-contained
Energy Harvesting power module in a 24-pin DIP
configuration. The CBC5300 module is designed to
accept a wide range of energy transducer inputs,
store the harvested power, and deliver managed
power to the target system. The purpose of this
module is to enable system designers to quickly
develop Energy Harvesting applications. A block
diagram of the EnerChip EH CBC5300 energy
harvesting module is shown in Figure 1.
Input Power
Transducer
Input
Boost
Converter
Input/Output
Pins
Power
Management
Figure 2: EnerChip EH Module - CBC5300
System Description
The energy harvesting transducer (e.g. photovoltaic
cell, piezoelectric material, thermoelectric converter,
etc.) converts ambient energy into electrical
energy. The output voltage of the energy harvesting
transducer is often too low to charge the EnerChip
batteries and power the rest of the system directly,
so a boost converter is used to boost the energy
harvesting transducer voltage to the voltage needed
to charge the EnerChip and/or power the system.
Charge
Control
2 - EnerChip
CBC050
Figure 1: EnerChip EH Module Block Diagram
Applications
• Wireless Sensors - Create perpetual sensors
with ambient energy and no batteries to change.
• Patient Monitoring - Use piezoelectric,
thermoelectric, or photovoltaic transducers to
power patient status sensors.
• Process Control - Sensors and reporting
electronics can be powered with motion or fluid
flow transducers.
• Real Time Location Monitoring - Active RFID
and RTLS sensing devices can be powered using
energy harvesting.
• Environmental Monitoring and Controls -
Optimize energy using energy harvesting.
The charge control block continuously monitors
the output of the boost converter. If the output of
the boost converter falls below the voltage needed
to charge the EnerChips, the charge controller will
disconnect the boost converter from the EnerChips.
This prevents the EnerChips from back-powering the
boost converter in low input power conditions.
The power management block is used to protect
the EnerChips from discharging too deeply in low
input power conditions or abnormally high current
load conditions. The power management block
also ensures that the load is powered up with a
smooth power-on transition. The power management
block has a control line (CHARGE) for indication to
the system controller that the energy harvester is
charging the EnerChips. A control line input (BATOFF)
is available for the controller to disconnect itself
from the EnerChips when it is necessary to conserve
battery life in prolonged low input power conditions.
The EnerChip EH CBC5300 as shown in Figure 2 has
two CBC050 50µAh EnerChip rechargeable battery
cells, for a total 100µAh of capacity.
©2009 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com
DS-72-06 Rev06
Page 1 of 11
1 page  
Preliminary
www.DataSheet4U.com
EnerChip EH CBC5300
Designing for Pulse Discharge Currents in Wireless Devices
Pulse discharge currents place special demands on batteries. Repeated delivery of pulse currents exceeding
the recommended load current of a given chemistry will diminish the useful life of the cell. The effects can be
severe, depending on the amplitude of the current and the particular cell chemistry and construction. Pulse
currents of tens of milliamperes are common in wireless sensor systems during transmit and receive modes.
Moreover, the internal impedance of the cell often results in an internal voltage drop that precludes the cell
from delivering the pulse current at the voltage necessary to operate the external circuit. One method of
mitigating such effects is to place a low Equivalent Series Resistance (ESR) capacitor across the battery. The
battery charges the capacitor between discharge pulses and the capacitor delivers the pulse current to the
load. Specifying the capacitance for a given battery in an application is a straightforward procedure, once a few
key parameters are known. The key parameters are:
• Battery impedance (at temperature and state-of-charge)
• Battery voltage (as a function of state-of-charge)
• Operating temperature
• Pulse current amplitude
• Pulse current duration
• Allowable voltage droop during pulse discharge
Two equations will be used to calculate two unknown parameters:
1) the output capacitance needed to deliver the specified pulse current of a known duration;
2) the latency time that must be imposed between pulses to allow the capacitor to be recharged by the
battery.
Both formulae will assume that the capacitor ESR is sufficiently low to result in negligible internal voltage drop
while delivering the specified pulse current; consequently, only the battery resistance will be considered in
the formula used to compute capacitor charging time and only the load resistance will be considered when
computing the capacitance needed to deliver the discharge current.
The first step in creating a battery-capacitor couple for pulse current applications is to size the capacitance
using the following formula:
Discharge formula: C = t / R * [-ln (Vmin / Vmax)]
where:
C = output capacitance, in parallel with battery;
t = pulse duration;
R = load resistance = Vout(average) / Ipulse
Vmin and Vmax are determined by the combination of the battery voltage at a given state-of-charge and the
operating voltage requirement of the external circuit.
Once the capacitance has been determined, the capacitor charging time can be calculated using the following
formula:
Charge formula: t = R * C * [- ln (1 - Vmin / Vmax)]
where:
t = capacitor charging time, from Vmin to Vmax
R = battery resistance
C = output capacitance, in parallel with battery
©2009 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com
DS-72-06 Rev06
Page 5 of 11
5 Page 
Preliminary
www.DataSheet4U.com
EnerChip EH CBC5300
Ordering Information
EnerChip Part Number
CBC5300-24C
Description
EnerChip EH CBC5300 module
Associated Products and Evaluation Kits
EVALUATION KIT
ANT Energy Harvesting Eval Kit
General Purpose Energy
Harvesting Eval Kit
Texas Intruments Wireless Sensor
Energy Harvesting Demo Kit
Description
Energy Harvesting Kit for ANT
Dnynastream ANTDKT3 Demo Kit
Energy Harvesting Kit for various
tranducers and system prototyping
Solar Energy Harvesting Demo Kit
for the Texas Intruments MSP430/
ChipCon2500
Notes
shipped in tubes
Catalog Number
CBC-EVAL-07
CBC-EVAL-08
eZ430-RF2500-EH
Disclaimer of Warranties; As Is
The information provided in this data sheet is provided “As Is” and Cymbet Corporation disclaims all representations or warranties of any
kind, express or implied, relating to this data sheet and the Cymbet battery product described herein, including without limitation, the
implied warranties of merchantability, fitness for a particular purpose, non-infringement, title, or any warranties arising out of course of
dealing, course of performance, or usage of trade. Cymbet battery products are not approved for use in life critical applications. Users shall
confirm suitability of the Cymbet battery product in any products or applications in which the Cymbet battery product is adopted for use and
are solely responsible for all legal, regulatory, and safety-related requirements concerning their products and applications and any use of
the Cymbet battery product described herein in any such product or applications.
Cymbet, the Cymbet logo, and EnerChip are Cymbet Corporation Trademarks
©2009 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com
DS-72-06 Rev06
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| PDF Descargar | [ Datasheet CBC5300.PDF ] | |
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