STEVAL-ISB003V1演示板

GY@艳

STEVAL-ISB003V1演示板是一种基于USB接口的单节锂离子电池充电器，是由ST7260E2型低速USB控制器和ST7LIT15BY0为基础的电池充电器。该板包括一电源选择电路来选择适当的电力供给源和基于L6920设备提供一个固定的输出电压到USB控制器的升压转换器电路。This demonstration board is an USB based single cell Li-Ion battery charger which consists of the ST7260E2-based low-speed USB controller and the ST7LIT15BY0-based battery charger.This board includes a power selector circuit to select the appropriate power supply source and a step-up converter circuit based on the L6920 device to provide a fixed output voltage to the USB controller. The power supply for the battery charger controller is generated from TL1431 keeping in mind the accuracy requirement for charging. An additional current-limiter is also included in series with a USB power supply to show any incorrect behavior using a status LED.A provision is provided on demonstration board such that any external low-speed USB controller can control the charger operation, hence this system can be used with any low-speed USB controller.