TI中文支持网Part Number:DRV8870
发现DRV8870 使用20KHZ 50% 占空比方波差分驱动时，在输出端使用耳机监听可以听见几khz 的尖锐噪声，以及其他类似流水的噪声。与负载和驱动频率无关。 监听输入的PWM信号已经确定无可闻噪声。
| Arabic | Hebrew | Polish |
| Bulgarian | Hindi | Portuguese |
| Catalan | Hmong Daw | Romanian |
| Chinese Simplified | Hungarian | Russian |
| Chinese Traditional | Indonesian | Slovak |
| Czech | Italian | Slovenian |
| Danish | Japanese | Spanish |
| Dutch | Klingon | Swedish |
| English | Korean | Thai |
| Estonian | Latvian | Turkish |
| Finnish | Lithuanian | Ukrainian |
| French | Malay | Urdu |
| German | Maltese | Vietnamese |
| Greek | Norwegian | Welsh |
| Haitian Creole | Persian |
Daniel：
您好
已经收到了您的案例，调查需要些时间，感谢您的耐心等待
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Links：
感谢您联系我们。
没有看到波形就不可能找出噪声源。
请你发布一个输入、输出和输出电流的scop截图。
同时，请分享要审查的原理图和PCB布局。
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English
Arabic
Hebrew
PolishBulgarian
Hindi
PortugueseCatalan
Hmong Daw
RomanianChinese Simplified
Hungarian
RussianChinese Traditional
Indonesian
SlovakCzech
Italian
SlovenianDanish
Japanese
SpanishDutch
Klingon
SwedishEnglish
Korean
ThaiEstonian
Latvian
TurkishFinnish
Lithuanian
UkrainianFrench
Malay
UrduGerman
Maltese
VietnameseGreek
Norwegian
WelshHaitian Creole
PersianTRANSLATE with
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Chen Hsiao：
扬声器两端波形
drv8870输入波形
电感两端波形
原理图DRV8870部分
MCU 使用定时器产生方波输出两对差分信号
,
Links：
请给波形贴上标签好吗？并让我知道它们是根据什么参考标准来衡量的。
TRANSLATE with x
English
Arabic
Hebrew
PolishBulgarian
Hindi
PortugueseCatalan
Hmong Daw
RomanianChinese Simplified
Hungarian
RussianChinese Traditional
Indonesian
SlovakCzech
Italian
SlovenianDanish
Japanese
SpanishDutch
Klingon
SwedishEnglish
Korean
ThaiEstonian
Latvian
TurkishFinnish
Lithuanian
UkrainianFrench
Malay
UrduGerman
Maltese
VietnameseGreek
Norwegian
WelshHaitian Creole
PersianTRANSLATE with
COPY THE URL BELOW
BackEMBED THE SNIPPET BELOW IN YOUR SITE
Enable collaborative features and customize widget: Bing Webmaster Portal
Back
