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TAS5508: TAS5508 output power

Wentao Zeng
Prodigy 590 points
Part Number: TAS5508

Hi

I have design audio with TAS5508 and STA516B, But face some issue.  output power could only reach 230W. But use STA309 + STA516B, it can reach 270W.

with same STA516B board. Same Power supply 51.25V. Do you think is there any obvious road We can try to solve it.

code uchar DRC1_Slope[]=
{
0x9a,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0F,0x81,0x47,0xAF
};
code uchar DRC1_Offset[]=
{
0x9b,0x00,0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x00,0x00,0x00
};

code uchar DRC_Bypass[]=
{
0xa2,0x00,0x00,0x00,0x00,0x00,0x80,0x00,0x00// DRC Bypass Registers
};

code uchar DRC1_Thresh[]=
{
 

0x99,0x00,0x00,0x00,0x00,0x04,0x66,0xcc,0x4a,0x00,0x00,0x00,0x00,0x04,0x66,0xcc,0x4a};


code uchar DRC2_Slope[]=
{

0x9f,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0F,0x81,0x47,0xAF
};
code uchar DRC2_Offset[]=
{
0xa0,0x00,0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x00,0x00,0x00
};


code uchar DRC2_Thresh[]=
{


0x9e,0x00,0x00,0x00,0x00,0x04,0x71,0x6d,0x9d,0x00,0x00,0x00,0x00,0x04,0x71,0x6d,0x9d

};

code uchar  SUB48KEnergy[]=
{
0x9d,0x00,0x00,0x02,0xBB,0x00,0x7f,0xfd,0x44//ENERGY 250ms

};
code uchar SUB48KAttackDecay[]=
{
0xa1,0x00,0x00,0x06,0xe5,0x00,0x7f,0xf9,0x1a,0x00,0x00,0x00,0xae,0x00,0x7f,0xff,0x51

};

  • 0
    TI__Guru 61220 points
    Wentao,

    Have you measured the output of STA309 and compared it to the TAS5508? Please check these two devices output using a scope. Send the comparison once you have it. My thinking is that the output of the TAS5508 is not driving the STA516B the same as the STA309. There is probably some setting we need to change.

    Regards,

    -Adam