BQ25790: 3 cell Li+ Buck boost CHARGING IC without Host control

MANIKANDAN V1

Part Number: BQ25790
Other Parts Discussed in Thread: BQ24179, , BQ25792

Hi,

We are planning to charge the battery pack 12.6V max , 2600 mAH via Type C input source (5V, 1-2A), Please Suggest the Suitable Charging controller with out I2C interface for our requirement.

please suggest the suitable controller for our requirement,

As discussed with Jonard Rico, they suggested BQ24179 IC for with out host control It can operate the buck boost configuration,based on the input source.

If its possible please share the example circuit for the same.

over 4 years ago

0 Michael Emanuel35 over 4 years ago

TI__Mastermind 40465 points

Hello,

Can you please provide some more details about what you are looking for?

For example, are you looking for an integrated solution or external FETs?

Are you looking for a power path charger or one with no power path?

How much charge current are you looking for?

Thanks,

Mike Emanuel

0 MANIKANDAN V1 over 4 years ago in reply to Michael Emanuel35

Prodigy 30 points

Hi Mike Emanuel,

Can you please provide some more details about what you are looking for?

we are planning to make Braille Reader, for that we developing the charging circuit with type C input source(5V, 1-2 A).

battery Pack : 12.6 Max voltage, 2600mAH

please suggest the suitable charging IC with Boost configuration.

For example, are you looking for an integrated solution or external FETs?

im looking for integrated IC only

Are you looking for a power path charger or one with no power path?

If power Path is there that would be great, If not there no issues.

How much charge current are you looking for?

Our battery Pack capacity is 2600mAH, so we are planning to charge with 0.5C, so the charging current is 1A is enough for our requirement.

0 Michael Emanuel35 over 4 years ago in reply to MANIKANDAN V1

TI__Mastermind 40465 points

We have the BQ25790 which is an integrated four switch buck boost battery charger with integrated power path. It can be controlled by I2C, but can also be operated without if the default settings by the PROG pin are sufficient. The default PROG settings for 3s are 1 A charge current, 9 V SYSMIN, and 12.6 V battery charge regulation.

Thanks,

Mike Emanuel

Please click "Resolved" if this answered your question.

0 MANIKANDAN V1 over 4 years ago in reply to Michael Emanuel35

Prodigy 30 points

Dear Emanuel,

Thank you for your reply,

I checked this IC in your store, and distributors websites also but this IC stock is not there in market, And please share the example circuit for the same.

if any compatible is there, please let me know.

I'm planning to use BQ25972, with this IC how we can do the charging without host control.

if possible please share the details with me.

0 Michael Emanuel35 over 4 years ago in reply to MANIKANDAN V1

TI__Mastermind 40465 points

Hello,

You can click "Notify me when available" to let you know when the BQ25790 is back in stock. Please check out the BQ25790 EVM for example circuit and layout.

The PROG pin behaves the same for BQ25792. Please make sure all the other default settings are ok with you.

Thanks,

Mike Emanuel

Please click "Resolved" if this answers your question.

0 MANIKANDAN V1 over 4 years ago in reply to Michael Emanuel35

Prodigy 30 points

Thank you for you information,

Already I saw the schematic available in 25792 EVM user guide, can you share the Source file (.DSN) format.

+1 Michael Emanuel35 over 4 years ago in reply to MANIKANDAN V1

TI__Mastermind 40465 points

Hello,

Please see the below thread.

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/955924/bq25792evm-bq25792evm-dsn-schematic/

Thanks,

Mike Emanuel

Please click "Resolved" if this answers your question.

+1 MANIKANDAN V1 over 4 years ago in reply to Michael Emanuel35

Prodigy 30 points

Thank you so much for your information.

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BQ25790: 3 cell Li+ Buck boost CHARGING IC without Host control