Hi Nikhil,
If you wish to parallel the TPS746-Q1 then you'll need to use one of two techniques.
Technique 1: ballast resistors The first technique uses ballast resistors on the outputs of each LDO. The outputs of the ballast resistors are tied together…
Hi Tiffany,
We do not have a single chip solution for 6 A with your required voltage rails; however, we do have a couple of TI Designs that discuss methods for using a couple LDOs to meet the current requirement through current sharing:
Very Respectfully…
Hi Alice,
How much current do you need? Please note the principles contained in the following TI Designs can be applied to multiple LDOs.
Very Respectfully,
Ryan
Hi Ross,
If you are attempting to parallel the two LDO outputs, please refer to the following TI Designs for how to parallel the outputs.
www.ti.com/.../TIDA-00270
www.ti.com/.../TIDA-01232
Very Respectfully,
Ryan
Hi Jerry,
Unfortunately we do not have any negative LDOs that are able to handle 2 A; however, we do have several negative voltage regulators that could be used in a current sharing application. You can find our selection of negative voltage regulators…
Hi Scott,
Thanks for the feedback.
I came across this TIDA-00270 reference design that demonstrates tying the outputs of two LDOs together by adding in an additional loop to match the output voltages. It just adds in a op-amp in an open-loop configuration…
Hi Bala,
The TPS7A47 family (and in particular TPS7A4701) will be your best choice in order to achieve the low noise and high PSRR. As you noted this family does not meet your output current requirement; however, you can use multiple TPS7A4701s in parallel…
Hi Mahesh,
We have released a TI Design ( www.ti.com/.../tida-00270 that demonstrates a method to parallel LDOs for higher current applications. This method can be applied to other adjustable LDOs such as TPS7A85.
Very Respectfully,
Ryan
Hi Ikon,
While it is possible to parallel two LDOs, is there a reason you do not want to use an LDO with a higher current rating such as TPS7A83A, TPS7A84A or TPS7A85A?
Here are a couple of TI-Designs that go into methods of paralleling LDOs. You…
Hi Ryuji,
I have not myself paralleled two TPS7A33 LDOs; however, I would imagine that you could successfully parallel them. TIDA-00270 would be a good reference if you choose to attempt this.
Very Respectfully,
Ryan
