TAS2505EVM: Supply current to SPKVDD

dai_sakamoto

Part Number: TAS2505EVM

Tool/software:

When SPKVDD=5V and an 8Ω 2W speaker is at maximum volume, what is the average DC current supplied to SPKVDD (Ispkvdd)?

This EVM board can be used with a USB 2.0 port, so I'm assuming Ispkvdd is less than 500mA, but is this correct? Please let me know if you have a formula for calculating it.

2 days ago

0 dai_sakamoto 2 days ago

Intellectual 370 points

Supplementary Information
In the datasheet, the conditions for 2W output at the bottom are closest to my requirements. I would like to know the supply current to SPKVDD at this time.

0 Ivan Salazar 2 days ago in reply to dai_sakamoto

TI__Guru** 109055 points

Hi Dai,

For power budgeting you may use the efficiency plot in data sheet Figure 5-13. You have about 75% efficiency at the highest power, which means the device consumes 25% additional of the output power.

Best regards,
-Ivan Salazar
Applications Engineer

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TAS2505EVM: Supply current to SPKVDD