cypress公司的MB39C831是超低電壓升壓太陽能和熱能能量收獲電源管理集成電路,包括根據(jù)太陽能最大功率跟蹤(MPPT)來控制DC/DC轉(zhuǎn)換器輸出和對鋰電池安全充電保護功能,輸入電壓0.3V-4.75V,輸出電壓3.0V-5.0V,最低起動電壓0.35V,主要用在太陽能收獲,鋰電池太陽能充電器,手持音頻播放器,手機,電子書,電子詞典,無線遙控器和傳感器節(jié)點.本文介紹了MB39C831主要特性,框圖和應(yīng)用電路,以及評估板MB39C831-EVB-03主要指標,框圖,應(yīng)用連接圖,以及電路圖,材料清單和PCB設(shè)計圖.

The MB39C831 is the high-efficiency synchronous rectification boost DC/DC converter IC which efficiently supplies energy gettingfrom the solar cell with the single cell or multiple cells, or from the thermoelectric generator (TEG) to the Li-ion battery.

It contains the function to control the DC/DC converter output following the maximum power point of the solar cell (MPPT:

Maximum Power Point Tracking) and the protection function to charge the Li-ion battery safely.

It is possible to start-up from 0.35 V using the low-voltage process and adapts the applications which the single cell solar cell istreated as the input.

MB39C831主要特性:

? Operation input voltage range : 0.3 V to 4.75 V
? Output voltage adjustment range : 3.0 V to 5.0 V
? Minimum input voltage at start-up : 0.35 V
? Quiescent Current (No load) : 41 μA
? Input peak current limit : 200 mA
? Built-in MPPT
? Charge voltage to the Li-ion battery/current protection function built in
? Improvement of the efficiency during the low-output power according to the auto PFM/PWM switching mode

MB39C831應(yīng)用:

? Solar energy harvesting
? Thermal energy harvesting
? Li-ion battery using the single cell or multiple cells ’solar cell/Super Capacitor Charger
? Portable audio players
? Cellular phone
? eBook
? Electronic dictionary
? Wireless remote controllers
? Sensor node

圖1.MB39C831框圖

圖2.MB39C831應(yīng)用電路圖:恒壓模式(MPPT_ENA=L,ENA=H)

圖3.MB39C831應(yīng)用電路圖:充電模式(MPPT_ENA=H,ENA=H)

評估板MB39C831-EVB-03

The MB39C831-EVB-03 is the evaluation board for the energy harvesting (Power Management) IC, MB39C831. This evaluation board is capable of accepting solar or thermal electric power source.

圖4.評估板MB39C831-EVB-03外形圖
評估板MB39C831-EVB-03指標:

圖5.評估板MB39C831-EVB-03框圖

圖6.評估板MB39C831-EVB-03充電模式太陽能收獲連接(MPPT模式)

圖7.評估板MB39C831-EVB-03恒壓模式太陽能收獲連接

圖8.評估板MB39C831-EVB-03電路圖
評估板MB39C831-EVB-03材料清單:

圖9.評估板MB39C831-EVB-03 PCB設(shè)計圖
詳情請見:
和
002-08404_MB39C831_Ultra_Low_Voltage_Boost_Power_
Management_IC_for_Solar_Thermal_Energy_Harvesting_Datasheet.pdf
002-08406_MB39C831_Ultra_Low_Voltage_Boost_Power_
Management_IC_for_Solar_Thermal_Energy_Harvesting_Datasheet_Chinese.pdf
3512248-002-08720.pdf