- 您现在的位置：买卖IC网 > Datasheet目录318 > CBC5300-24C (Cymbet Corporation)ENERCHIP EH CBC5300 MODULE Datasheet资料下载
参数资料
| 型号： | CBC5300-24C |
| 厂商： | Cymbet Corporation |
| 文件页数： | 5/11页 |
| 文件大小： | 0K |
| 描述： | ENERCHIP EH CBC5300 MODULE |
| 产品目录绘图： | CBC5300-24C Module |
| 特色产品： | EnerChip? EH Energy Harvesting Module EnerChip? EH Solar Energy Harvesting Evaluation Kit |
| 标准包装： | 16 |
| 系列： | EnerChip™ EH |
| 模块/板类型： | 能量收集模块 |
| 适用于相关产品： | 薄膜充电式固态电池 |
| 产品目录页面： | 709 (CN2011-ZH PDF) |
| 相关产品： | 859-1009-6-ND - IC BATT SOLID ST ENERCHIP 16QFN 859-1009-1-ND - IC BATT SOLID ST ENERCHIP 16QFN 859-1009-2-ND - IC BATT SOLID ST ENERCHIP 16QFN 859-1005-5-ND - IC BATT SOLID ST ENERCHIP 16QFN |
| 其它名称： | 859-1000-5 |
Preliminary
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
DS-72-06 Rev06
?2009 Cymbet Corporation ? Tel: +1-763-633-1780 ? www.cymbet.com
Page 5 of 11
相关PDF资料 |
PDF描述 |
|---|---|
| CC-ACC-MX51-ETM | ADAPTER TRACE ETM/ETB JTAG |
| CDBMCU-DEBUG | EVAL BD FOR DSP CS48X & CS49X |
| CEL2MUSB | E2GO CELL PHONE CHARGER USB |
| CH-14403 | RACK SMALL MNT CHASSIS ALUMINUM |
| CH15MNP4 | BATT CHARGER 15MINUTE W/4AA |
相关代理商/技术参数 |
参数描述 |
|---|---|
| CBC-702 | 制造商:American Electronic Components Inc 功能描述:MERCURY RELAYS |
| CBC-707 | 制造商:American Electronic Components Inc 功能描述:MERCURY RELAYS |
| CBC-719 | 制造商:American Electronic Components / DURAKOOL 功能描述:MERCURY RELAY, 12VDC, 100A, SPDT; Coil Voltage VDC Nom:12V; Contact Current Max:100A; Coil Resistance:27ohm; Contact Configuration:SPDT; Relay Mounting:(Not Available) |
| CB-C8 | 制造商:NEC 制造商全称:NEC 功能描述:3-VOLT, 0.5-MICRON CELL-BASED CMOS ASIC |
| CBC-8 | 功能描述:断路器 CIRCUIT BREAKER RoHS:否 制造商:Phoenix Contact 产品:Device Circuit Breakers 产品类型:Thermomagnetic 电流额定值:2 A 电压额定值 AC:240 V, 277 V 电压额定值 DC:50 V 极数:1 Pole 执行器类型:Slide 电路功能:Trip Free 系列:CB TM1 工作温度范围:- 30 C to + 60 C 照明:No |
发布紧急采购，3分钟左右您将得到回复。