BQ20Z655-R1: How can i use this IC?

Ahmet BURMA

Intellectual 260 points

Part Number: BQ20Z655-R1
Other Parts Discussed in Thread: EV2400,

Hi guys.

I want to use "BQ20Z655" battery management IC. I drew a schema and PCB using the application notes.

Schema ==> https://imgur.com/KgvOoCh

PCB ==> https://imgur.com/lU46c3l

and i downloaded the bq evolution software. ==> https://imgur.com/lN3yNP7

But I don't know how to proceed from after this point. I did some research and found out that I needed an EV2300 interface board.
But this board probably not compatible with 64bit Win10 and it is obsolete in Digikey. On the other hand new version is released of this board (EV2400).
But I'm not sure it will work with the bq evolution software. Could you please, can you tell me what to do step by step?

Best regards.

over 5 years ago

0 Andy Liu (BMS) over 5 years ago

TI__Guru 52115 points

Hi Ahmet,

I would suggest you get an EV2400 board. As far as I know, the bqEWSW can work with EV2400.

Andy

0 Ahmet BURMA over 5 years ago in reply to Andy Liu (BMS)

Intellectual 260 points

Hi Andy.

Firstly, i must get EV2400 board. Should I download the new version or another version of bqEWSW?

0 Andy Liu (BMS) over 5 years ago in reply to Ahmet BURMA

TI__Guru 52115 points

Just use the latest one available in the ti.com.

0 Ahmet BURMA over 5 years ago in reply to Andy Liu (BMS)

Intellectual 260 points

Hi Andy.

I got the EV2400 eval board. ==> https://imgur.com/t7F66em

and PCB is ready ==> https://imgur.com/qzXI9xY

I connected the li-ion battery pack (4 cells) and i opened the bqEVALSW. bqEVALSW, connected seamlessly to BQ20Z655-R1. I have seen the battery level and thermistor temperature properly. Level button and level leds worked.

Could you please, could you tell me about the next steps a little bit? How do I adjust settings such as current sense resistors, maximum thermistor temperature etc.? How do I write these settings in the IC? Do I need to adjust the capacity of the battery I use for the IC (1500ma, 2200ma etc.)?

Could you please, can you help me?

Best regards.

0 Andy Liu (BMS) over 5 years ago in reply to Ahmet BURMA

TI__Guru 52115 points

Check the app notes below. They should be helpful.

http://www.ti.com/lit/an/slua334b/slua334b.pdf

Quick Start Guide for bq20zxx family gas guages.pdf

Andy

Power management

Power management forum

BQ20Z655-R1: How can i use this IC?