TPS65560EVM-165: TPS65560

Gavin,
Thank you for getting back.
I am in full agreement with your response for 1&2. My question is, how can this circuit be modified to charge and discharge continuously without pushing buttons ?
Thanks again,
Joe

Gavin,
Thank you again.
"Just control CHG and F_ON pin". There are no step by step directions on how to control these pins. Could you please elaborate.
Joe

Joe,

Also you can use your EVM, it has jumpers for customer to use a external signal to control CHG and F_ON pin. You can use the jumper to try your idea.

Gavin,
J5 is a set of jumpers I assume you are referring to. It has five sets of jumpers. I have read all the data sheets and manuals on this board including what you have suggested. That is the technical info which is great, but very little operational information. The designers of this board must have an Operational Manual which I would appreciate your referring me to.

You stated; "You can use jumpers to try your idea". I don't have an idea. My objective is to operate this EVM from a remote on/off switch. I would prefer not to position jumpers without having any idea of the outcome.

Thanks again,
Joe

Hi Joe,

We actually have an Operational Manual . You can do step by step.

www.ti.com/.../slvu155b.pdf

Gavin,
I have also read this User's Guide. The most it has from an operational standpoint is and I quote "press the charge button until the light comes on, then press the flash button". There has got to be more !
Joe

Joe,


First" press the charge button" means that the output capacitor begins to charge.

"The light comes on" means that there is diode in the EVM. When it changes to the full, the diode will be conducted. You can see the light comes on.

"Then you press the flash button" means that you give a logic level to make the IGBT work. So it flash.

Gavin,

I understand about the press buttons. Thats the easy part. My point is that the buttons are the only piece of "operational information" in the extensive amount of technical information that was made available with this EVM. It is not only this product, but everything that I have looked at with TI as well as other manufacturers.

We have now had 10 communications back and forth and have not established if it is possible to utilize a remote on/off switch with this EVM. I totally understand that you or anyone else, other than the designers, could possibly know every component and circuit that TI manufactures.

The information provided also states that one can connect this EVM to a computer. There is no "operational information" that indicates """"HOW""". What pin are necessary to do this ? What type of connections are required ? What operating system will be necessary etc.etc. ? How are perspective grade schoolers, high schoolers, college people etc., wanting to learn electronics, suppose to rely on TI for their components let alone learn from TI.

Please understand, this particular absence of information is not specific to just this EVM. All of TI's product information that I have looked at as well as TI's competition's product information, employ the same model; all technical and no practical or operational information. A few extra sentences, not a tome, indicating the designers intended application and function would be invaluable to both TI's business and the customer.

Suggestion to TI: Have one of your new hires/new graduates sit down with this EVM or any other product for that matter, with the same information that is provided to the customers. Determine if they can accomplish everything that is stated in the provided information. This would provide TI with a one person focus group to determine TI's communications and informational effectiveness. I think this lack of operational information is an industry wide flaw.

Gavin
Thanks again for your time,
Joe

Joe,


Thanks for your comments.