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AN2390 数据表(PDF) 1 Page - STMicroelectronics |
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AN2390 数据表(HTML) 1 Page - STMicroelectronics |
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1 / 42 page ![]() August 2007 Rev 1 1/42 AN2390 Application note A flexible universal battery charger Introduction In everyday life, more and more portable electronic appliances, such as mobile phones, are powered by re-chargeable batteries so the demand for battery chargers for charging these batteries is increasing all the time. This Application Note describes a cost-effective way to implement an intelligent battery charger for charging Li-ion and NiMH batteries as shown in Figure 1. Figure 1. Universal battery charger evaluation board (STEVAL-ISB002V1) It is based on a evaluation board built around the ST72324L microcontroller with a demo application code. While the evaluation board described in this Application note is intended to be used for single cell Li-ion battery or 2 cell NiMH batteries you can customize this charger for a wide range of batteries because of the flexibility of the MCU and of the buck boost converter. The ST72324L MCU was selected for its main features, an embedded 10-bit A/D converter (to efficiently measure voltage, current and temperature), 16-bit timer (to generate PWM signals), main clock controller (to generate a time base signal) and 8 Kbytes of program memory which is more than enough to hold the algorithm for various battery chemistries. You can choose any other MCU that has similar capability. An LED is also used to indicate the charge status. www.st.com |
类似零件编号 - AN2390 |
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类似说明 - AN2390 |
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