BQ28Z610: BQ28Z610 EVM does not work ( initial FW inside )

meriton

Prodigy 140 points

Part Number: BQ28Z610
Other Parts Discussed in Thread: EV2400, BQSTUDIO

Hi There,

We are running BQ28Z610 EVM, but it works abnormally. Below is some detail information,

Connection :

PACK+, PACK- : Connect 47ohm Resistor

VC2, VC1, GND: Connect to related Power supply, VC1 voltage set 4V , VC2 voltage set 8v. （ 2s battery ）

FW : initial FW inside, no updating the FW

Procedure:

1. power on

2. press S1 switch, battery voltage will be guided to PACK's side and Wake up the device from shutdown mode.

3. After pressing S1 for 2 second, release the switch.

4. DSG voltage : low 0.05v , CHG voltage : 4.03v

The gauge is not working, Charging path is not work normally. What's more, EV2400 could not connect to BQ28Z610 successfully. Please help to check where the problem is.

Thanks a lot.

over 3 years ago

0 Vos over 3 years ago

TI__Genius 10370 points

Meriton,

It looks like lots of modifications were made to the EVM. It is possible the IC was damaged while doing so. Please connect nothing to the EVM except the following

1) Power Supple 1: GND --> VC1 (4V)

2) Power Supple 2: VC1 --> VC2 (4V)

3) The EV2400 cable to the I2C port.

Once this is true, push the button 1 time (or short VC2 to pack +, for just a split second).

Then open bqStudio. if it doesn't communicate, please post s picture of the error bottom right of the bqStudio window.

I suspect it might be damaged.

Thanks,

Eric Vos

0 meriton over 3 years ago in reply to Vos

Prodigy 140 points

Hi Eric,

Got it and well noted.

I will do the experiment by this Friday, now I am out on business trip.

Thanks for your suggestion.

0 meriton over 3 years ago in reply to Vos

Prodigy 140 points

Hi Eric,

Please refer to below pic/register setting .

Looking forward to your reply. Thanks.

+1 Vos over 3 years ago in reply to meriton

TI__Genius 10370 points

Meriton,

So everything looks to behave normally. Currently you are unable to charge because the CHG/DSG fets are off due to the FET_EN command not being enabled.

You need to send command 0x0022 to MAC address 0x00. to enable the FETS

Thanks,

Eric Vos

0 meriton over 3 years ago in reply to Vos

Prodigy 140 points

Hi Eric,

It works. Thanks so much.

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BQ28Z610: BQ28Z610 EVM does not work ( initial FW inside )