Thanks for response Ryan regarding the 15k resistors.
Now how are the sense resistors calculated? along with the resistors at the input of the op amp?
I know for the TIDA-01232, the document gives us the formula for calculating the ballast resistors…
Part Number: TPS7A85A Other Parts Discussed in Thread: TPS7A85 Hello everyone,
I was pleased to see that the excel spreadsheet for calculating parallel LDOs has been updated with the addition of the TPS7A85A and the calculator for external resistors…
Hello Andres,
Thank you for your reply.
I want to look at an alternative design by using two TPS7A52 in parallel. According to the specsheet this can be done by following the instructions in the "TI Designs: TIDA-01232
My concern is that this…
Part Number: TPS7A85 Other Parts Discussed in Thread: , TPS7A83A , TIDA-01232 Hi all, I need some advice. I have to use the TPS7A85 component to meet the following parameters: Input Voltage: 3.5V Output Voltage: 1V Output Current: 2A Allowable Ripple…
Part Number: TPS7A92 Other Parts Discussed in Thread: TIDA-01232 , TPS7A85A , TPS7A85 Hello,
The output current is 3A and we want to use two TPS7A9201s in parallel due to some reasons.
TIDA-01232, ballast resister solution, seems to be able to achieve…
Hi Ella,
I have a couple potential solutions for you:
- You can connect multiple TPS7A8801 in parallel to lessen the current being pulled by the devices. The drawback to this solution is the complexity that it presents
Here are some TI App notes…
Hi Vinnie,
Thanks for providing the additional details.
Since the LDOs on this device do not have an accessible FB pin, the only way to potentially parallel two LDO1 outputs is to use ballast resistors. This reference design shows an example with…
Hi Itoh-san,
My fault i missed the current sharing part of the first question. Yes you can achieve this through current sharing. You will need to use ballast resistors or amplifiers though. There is a good app note below on how to use ballast resistors…
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…
