TAS5414B-Q1: SCH review

Amelie Zheng

Genius 10865 points

Part Number: TAS5414B-Q1

Hi team,

My customer now use TAS5414BTDKDRQ1 and could you kindly help to check SCH?

When TAS5414B powerIC as a slave, is it necessary to provide a clock signal through OSC_SYN from outside?

TI TAS5414BTDKDRQ1.pdf

over 2 years ago

0 Yanming Gong over 2 years ago

TI__Mastermind 19250 points

Hi Amelie,

The schematic looks fine. OSC_SYN can be from outside source, but it must meet device requirement.

Regards,

Derek

0 Jeremy Li over 2 years ago

Prodigy 100 points

Dear TI,

we use two TAS5414B powerIC as slave in our product, if we don't use outside source(OSC_SYN), is it possible?

Meanwhile if we don't use outside source(OSC_SYN), could you pls recommand how to design circuit？

Thank you very much if you can give feedback in time because the project is urgent.

0 Yanming Gong over 2 years ago in reply to Jeremy Li

TI__Mastermind 19250 points

Hi Amelie,

Yes, it is ok. You can refer FOSC_SYNC spec requirement in datasheet, page 10.

If you do not use outside source(OSC_SYN), you should set device to master mode. Or the clock source is from another master device, for master device OSC_SYN is output.

Regards,

Derek

0 Jeremy Li over 2 years ago

Prodigy 100 points

As my understanding, it must use outside source(OSC_SYN) as slave device. Is the understanding correct?

0 Jeremy Li over 2 years ago

Prodigy 100 points

Dear TI,

accoding to the communication, we plan to design one powerIC config as master device, and another powerIC config as slave device. the master device output clock to slave device.

meanwhile the device as master or slave doesn't affect the i2c interface, the outside i2c master device also can't write/read the master poweric device and slave powerIC.

could you pls help to check the design and understiong corrct or not?

Thank you very much if you can give feedback in time because the project is urgent.

0 Gregg Scott over 2 years ago in reply to Jeremy Li

TI__Mastermind 35865 points

On the schematic delete C57122 and R53227, and short I2C_ADDR pin to ground. This will allow the I2C_ADDR pin to be set accurately and IC57001 to be the master. On IC57000 delete C57120 to make this device a slave (I2C address for Slave3). Net AMP1_SYNC and AMP2_SYNC should be connected together. The Master will provide the oscillator for the slave, by setting bit D7 in Register 0x0B. The slave device needs an oscillator to function, it does not need to be enabled in Register 0x0B, bit D6, as it is automatic.

Regards,
Gregg Scott

0 Jeremy Li over 2 years ago in reply to Gregg Scott

Prodigy 100 points

Dear Scott,

Got it, thank you very much for your support!

0 Jeremy Li over 2 years ago in reply to Jeremy Li

Prodigy 100 points

Dear Scott,Derek,

we use two TAS5414Bs in our product, one is master and another is slave, the master provide the clock to slave. could you please help to provide the register configuration both master and slave to me?

Thanks!

Best Regards

Jeremy