TPS7A92: TPS7A92

Hello,

Thank you for your schematic questions.

I have reviewed the following schematics and have determined that overall, these schematics look good. (Pinout is correct, FB resistors give the correct output voltage, value of the PG resistor is according to specification, etc...)

I just have a few questions and recommendations regarding the schematics:

Output Voltage 1.8V Schematic:

1) We recommend adding a resistor of 10uF to the input.

2) Make sure that during layout the IN and OUT capacitors are as close to the device as possible. Please see the layout example on page 23 of the TPS7A92 datasheet:

TPS7A92 2-A, High-Accuracy, Low-Noise LDO Voltage Regulator datasheet (Rev. B) (ti.com)

3) We recommend connecting the PG resistor directly to the output to monitor the output closely.

4) In regard to the EN pin, is independent turn-on required for your device? If not, we recommend connecting the EN pin directly to IN:

"Connecting EN directly to IN is recommended if independent turn-on is not needed."

Output Voltage 1.0V Schematic:

1) We recommend adding a resistor of 10uF to the input.

2) Make sure that during layout the IN and OUT capacitors are as close to the device as possible. Please see the layout example on page 23 of the TPS7A92 datasheet:

TPS7A92 2-A, High-Accuracy, Low-Noise LDO Voltage Regulator datasheet (Rev. B) (ti.com)

3) We recommend connecting the PG resistor directly to the output to monitor the output closely.

4) In regard to the EN pin, is independent turn-on required for your device? If not, we recommend connecting the EN pin directly to IN:

"Connecting EN directly to IN is recommended if independent turn-on is not needed."

Or if you will not be using the enable function, we recommend connecting EN to IN:

Please let me know if you have any additional questions or concerns.

Best Regards,

Hannah

Hi Hannah,

Thanks for the reply. Please see my response embedded below.

1) We recommend adding a resistor of 10uF to the input.

[VD] We do have a 10 uF to the input. Not attached with the above pictures.

2) Make sure that during layout the IN and OUT capacitors are as close to the device as possible. Please see the layout example on page 23 of the TPS7A92 datasheet:

TPS7A92 2-A, High-Accuracy, Low-Noise LDO Voltage Regulator datasheet (Rev. B) (ti.com)

[VD] Sure. We will follow the layout guidelines.

3) We recommend connecting the PG resistor directly to the output to monitor the output closely.

[VD] Does this affect the performance? We plan to use a pull-up to an external voltage.

4) In regard to the EN pin, is independent turn-on required for your device? If not, we recommend connecting the EN pin directly to IN:

[VD] It is an independent turn-on.