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Part Number: EMB1499Q
Is there any bi-directional current DC-DC controller available with TI which can support up to 100V stack voltage?. Existing EMB1499Q can support up to 60V stack voltage?. In our application we are using 24 li-ion cells in series. We would like to implement TI based active cell balancing with 4xSwitch matrix driver (Emb1428q) & 2xDC-DC isolated bi-directional controller(Emb1499q). Please see the attachment is this feasible and scalable?
Active cell balancing concept feasibility architecture.pdf
In reply to David Wiest Jr:
Thanks for the reply, I do considered 2x12 cells and it looks feasible scalability point of view. Is there any limitation or constraint to connect the transformer primary side of forwad DC DC converter to the same 12-cell stack voltage?
In reply to NagaMani:
Please message me - I have a couple preliminary app notes that may be helpful for you while designing. Off of the top of my head, I think it should be a fairly simple conversion to balance cells back to the module. We have a TI reference design that is older, but does use the EMB1499 in the way you are asking (TIDA-00239)
Link here: http://www.ti.com/tool/TIDA-00239
There is also the EM1402/TIDA-00817 to reference. This is a more modern version
Indeed it's helpful. Could you please share the application notes which would be useful for automotive application (electric vehicle)
In reply to Mehmet Ugras CUMA:
If you are referring to the EM1402, the cells are balanced to an external 12V battery. This battery powers the 12V systems in a vehicle (or is an AUX battery if being used for pure energy storage). Typically the high voltage system and the 12V system are completely isolated from each other, which is where the isolation comes into play.
Unfortunately, the question you asked is not as simple as it would appear. Technically, you can balance to whatever voltage you may want as long as the isolation is proper. The challenge will be designing the magnetics and converter to operate properly.
Could you share what you are planning to do? I am always happy to help sanity check. IF you do not want to share here, you can message or email me directly. If you are working with NagaMani, they also possess my email address and we can work this offline.
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