...ping down (or bucking) a higher voltage rail to a lower voltage rail is almost always more efficient than stepping up (or boosting) to a higher voltage rail. Proper management and CONTROL of a rechargeable battery is critical for maximizing battery life. Battery management consists of three parts: battery monitoring, battery protection and charge CONTROL. Ba...
...951 说明:The TLC5951 is a 24-channel, constant-current sink driver. Each channel has an individually-adjustable, 4096-step, pulse width modulation (PWM) grayscale (GS) brightness CONTROL and 128 step constant-current dot correction (DC). The dot correction adjusts brightness deviation between channels and other LED drivers. The output channels are grouped i...
自动化蚀刻控制下的可重复性
....5%, which was too large for requirements of the pre-diffusion clean process. In order to reduce the etch rate variation and improve run-to-run repeatability, etch time should be CONTROLled to compensate for temperature and concentration variation. Automated etch CONTROL was developed based on these concepts and is described in the following paragraphs. 3 ...