Part Number: TPA3255-Q1 Other Parts Discussed in Thread: TPA3255 用TPA3255做了一块功放板,采用的PBTL模式,频率600K。
电源用AC转DC供电(AC220V转DC51V),功放运行正常,输出接4欧姆负载,200W,接散热片,1K正弦波可持续运行5分钟。
电源换成DC转DC(DC24V转DC52V),其他不变,1K正弦波运行约3秒,就直接过热保护。电源输出功率无异常,接电子负载可输出400W。
电源纹波对比,AC转DC的电源…
Part Number: MCF8316C-Q1 hi TI:
As for the following problems, we plan to launch FAR. FAE suggests to review the application schematic in E2E forum first. Please help analyze the following problems and review our design.
Problem phenomenon: in the DVT…
Hi,
You can refer to page 5 “6.3 Recommended Operating Conditions”& page 6 “6.4 Thermal Information” of the datasheet for the recommended conditions of use, and it is recommended to use the chip within the recommended range. …
Part Number: TPS562211EVM Other Parts Discussed in Thread: LMR16030 , TPS56221 , LM5117 TPS56221 _ TPS562211.pdf
问题点: 当提供一个可变的Vtrim电压时,TPS56221烧坏,表现为输入对地短路/输出对地短路/ 或两种短路的情况都都有。Vtrim电压可以是PWM方波。之前用的LM5117/LMR16030就没有这个现象。请问是什么原因呢?
输入12V,输出最大10V.