Other Parts Discussed in Thread: EM1402EVM
Hi!
I test a custom PCB for balancing Li batteries using EMB1428 and Emb1499 ICs.
But actually this ICs doesn't work as expected.
I send command to charge one cell (for example, first cell, then command is 0x10, or third cell with 0x30 command)
I got answer 0xAx (x is a number of cell I expect to balance), and at this moment EMB1428 open all MOSFETs in matrix (I check it with oscilloscope)
Then I send 0x00 command to stop balancing and I get 0x70 answer, which can be interpreted as 0b0111 (111 - fault code, which is not described in datasheet).
I made a diagram of processes in signals between EMB1428 and EMB1499. It can be seen, that EN pin goes high, then DONE goes low. But then, almost immidiatly DONE goes high and FAUL0...2 goes high too.
This moment I got error 0x70 and there is no balancing process.
That can be the reasons of this problem?
The scheme with EMB1428 and EMB1499 is taken from EM1402EVM, SPI control is via STM32F4 MCU.
