Hi,
What would be the best buck converter for powering a processor board? TI has many converters to choose from at first sight, but not sure what would be best suited. Input voltage 12V; Output: 5V/8A.
Kind regards,
Hans van Daal
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Hi,
What would be the best buck converter for powering a processor board? TI has many converters to choose from at first sight, but not sure what would be best suited. Input voltage 12V; Output: 5V/8A.
Kind regards,
Hans van Daal
What’s equipment? Is there other spec? Thermal? Max Vin?... For low cost, you can check TPS568230.
Yuchang
Vin max= 14V
Vin min = 10V
I also checked the TPS568230, which seems ok for our application.
Another question: we use already the TPS63020, but now we need a higher output current (3A or more). Do you have such buck-boost converter available, preferable no BGA package?
BR,
Hans
Hi Hans
If you can give some more insight into your end application, we can help narrow down the seleciton further. For example, there are applications that need fixed frequency operation. For such applications, you can use the TPS54824 for 8A. If you are looking for pseudo fixed frequency devices, you can pick TPS54JA20. Knowing the operating ambient temperature of your application is important as well. So, can you please give more information of your end application?
You can use the WEBENCH tool to help with your selection as well.
https://webench.ti.com/power-designer/switching-regulator
Regards,
Gerold
Hans,
For buck-boost converter, I will forward this question to the corresponding team to review.
Yuchang
Hi Hans:
May I know what's the Vin, Vout and load condition for BuckBoost solution?
Hi Minqiu,
The inputvoltage is normally 5V. When the power is disconnected a supercap will take over the input voltage to be able to safely shutdown the processor board (Variscite VAR-IMX8M-MINI). So then the input voltage will drop from 5 to 0V. The buck-boost converter must maintain the 3V3 output as long as possible. The output current must be 2.5A or higher.
The operationg temperature is 0 to 75 degr Celsius.
Kind regards,
Hans
.
Hi Hans:
There should be a min Vin spec. None converter can support if Vin drop too low.
You can have a look at TPS63802, while the min Vin can be 1.3V after startup. (But can't handle full loading when Vin is too low.)
We also have a reference design based on Boost converter. It can supply Vin low to 0.5V, and has larger current capability than a buck-boost converter.