Hello,
A quick about me iam a Hobbies that is into LED's and other Light Products. I have been Creating Different LED Drivers for some time now and all is Great.
I love making new PCB's and Drivers "Constant Currant" Whenever i find a New Chip i want to give a try out.
The TPS61030 is what i wanted to give a go since i have already created a perfectly working driver with the 63020.
The 61030 has more benefits over the 63020 for what i need as well.
Iam a Fan of Boost only and this Chip is really exactly what i was looking for, for my project.
Now to the Issue iam having which i cannot figure out. I have already received my Proto Boards in from the PCB Fab and put a few together through out the day today testing and all of them seem to have the same issue.
The Issue iam having is when i apply Voltage to the Driver to power the load it seems the IC does not switch on. Thats the best i can describe it.
My input start voltage is 4V
My Load is 4.7v
My Currant is set to ~1.5A
In order for me to get the driver/ TPS61030 to switch on i have to increase my input voltage anywhere from .6v to as high at 1.5V above 4V then turn the voltage back down again to 4V in order to get the IC to switch on.
Once it switches on it works Flawless and i really like it alot. The Driver works Like you would expect it to work. THe only problem is its not switching on in the begining and i dont know what is the cause of this.
The Higher Currant i set it the Higher the startup voltage i need to put over 4V then bring it back down to 4V.
Iam no pro in making PCB or understanding everything about IC's iam just a Hobbies and addicted to making new PCBs. This is the first time i have ever seen this before in any of my drivers designs.
Iam not sure if its something i forgot to connect or something i forgot to add or change but it has left me stumped all day today..
I can Make Videos take Pictures or whatever is need for anyone to help me figure this out as its just Killing me to look at these boards and not knowing whats wrong.
For Test Equipment i Own:
5A Varible Power Supply, A few DMM and an old Tektronix Analog Oscilloscope
Just let me know what you need to see and i will post it.:)
Iam looking forward to getting Great Support from the forum.
Thanks,
Nick,Mills