TPS7A94: Paralleling for Higher Output Current and Lower Noise

Hi Justin,

Yes, chip resistors are fine.  I usually start at 0805 or 0603.  Depending on your ambient temperature and the power dissipation, you may be able to select an 0402.  You need to review the derating curve in the resistor datasheet to verify you do not exceed the rating of the resistor.  Please review section 4.2 in this white paper:

https://www.ti.com/lit/wp/sbva093/sbva093.pdf

We have recently released new resources for paralleling LDOs including the TPS7A94. To help you quickly select the value of the ballast resistor, please see the following MS Excel based calculator.  There is no VBA in this software tool so it should be okay to download.

https://www.ti.com/tool/PARALLEL-LDO-CALC

Here are additional resources which you may find helpful:

A Scaleable, High-Current, Low-Noise Parallel LDO Reference Design
Parallel LDO Architecture Design Using Ballast Resistors

Thanks,

Stephen

Hi Justin,

In addition, we are working on releasing a 2A version of the TPS7A94 which will be called the TPS7A96.  Here is the link to that product folder for your reference. 

https://www.ti.com/product/TPS7A96

You can also parallel the TPS7A96 for higher current. 

Thanks,

Stephen