Cymbet EnerChip EH CBC5300能量收集方案

Cymbet 公司的EnerChip EH CBC5300是自带能量收集的功率模块,能接收各种变换器的能量输入,存储收集的能量,并对目标系统进行能量管理,使系统设计者能快速开发能量收集的应用. CBC5300主要应用在无线传感器,病人监护,过程控制,实时场所监视以及环境监测和控制.本文介绍了CBC5300主要特性,模块方框图以及应用电路.

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.

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.

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.



图1.CBC5300外形图



图2.EnerChip EH CBC5300模块方框图

EnerChip EH CBC5300应用:

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.



图3.CBC5300应用电路