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Class D Audio Amplifier IC Forum Discussions

Happy
Level 1
Level 1
5 replies posted 5 sign-ins First reply posted

笔记本电源19.6V 输入到电路,然后启用设备: /ENABLE = 0.Unmute device: /MUTE = 1.,PBTL模式输出20V直流电,但是如果只输入9v工作正常,请教一下专家原因,PCB检查很多次没有问题。

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Happy
Level 1
Level 1
5 replies posted 5 sign-ins First reply posted
 
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Happy
Level 1
Level 1
5 replies posted 5 sign-ins First reply posted

这里A和B 指的  OUT A   and  OUT B  测量的电压,ENABLE = 0测得电压,求助是什么问题!!?

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Jingwei
Moderator
Moderator
Moderator
First question asked 100 replies posted 10 likes received

您好,

可以重新检查下,这里的模式和电阻设置是否正确。

Jingwei_0-1671613650622.png

BR,

Steven

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Happy
Level 1
Level 1
5 replies posted 5 sign-ins First reply posted

你好,感谢帮助,我想说是我并不是通过程序控制的,I2C 地址AD0 和 AD1默认接地,MSEL0和MSEL1默认接地,时钟CLKM/S、MUTE直接接5V,Enable接地。都是物理设置。

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Happy
Level 1
Level 1
5 replies posted 5 sign-ins First reply posted

补充一下,用12v电源试了一下就没问题,但是用19.5v的电源就有问题。。。

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Jingwei
Moderator
Moderator
Moderator
First question asked 100 replies posted 10 likes received

您好,问一下现在问题还存在吗?

Steven

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Happy
Level 1
Level 1
5 replies posted 5 sign-ins First reply posted

嗨,新年快乐,可惜问题没有解决!

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