requirement on OVP function device

Given Ding

Expert 8345 points

Other Parts Discussed in Thread: BQ24380, BQ24351, BQ24308, BQ24350

Hi Team,

Here is a requirement as below. EE is smartphone. The device will be put before charger.

Vin=2.8~12V, absolute value is 28V, has OVP function, integrated Rdson is below 55ohm, Iout is 4.5V. single channel.

System ESD test: IED61000-4-2, contact >=8kV, air >=15kV.

Please kindly check if there is proper device. Thanks.

BRs

Given

over 4 years ago

0 David Hien over 4 years ago

TI__Genius 10830 points

Hi Given,
I think there is a typo above about Iout. Please correct.
We have several charger front end ICs like BQ24308 or BQ24380 or BQ24351 which could be interesting devices for this project but need the correct Iout to be specified to confirm.

0 Given Ding over 4 years ago in reply to David Hien

TI__Expert 8345 points

Hi David,

Thanks for your reply.

Yes, Iout is 1.5A. Thanks.

BRs

Given

0 Given Ding over 4 years ago in reply to Given Ding

TI__Expert 8345 points

Hi David,

There is another typo.

Rdson of Integrated MOS is below 55mohm. Customer need the MOS to do OVP function when Vbus voltage is above OVP threshold, also the threshold of OVP needs to be adjusted. Thanks.

BRs

Given

0 David Hien over 4 years ago in reply to Given Ding

TI__Genius 10830 points

Given,
We have the BQ24350/1/2 with the integrated charging FET but the max OCP is 1.2A.

Can we suggest a device without integrated FET?

0 Given Ding over 4 years ago in reply to David Hien

TI__Expert 8345 points

Hi David,

Thanks for your reply.

Customer request integrated MOSFET. But if we do not have such device, I can discuss with customer if they have interest on our without integrated FET solution, do you have recommendation?

Thanks.

BRs

Given

0 David Hien over 4 years ago in reply to Given Ding

TI__Genius 10830 points

Given,
Look at BQ24380/1/2. The OVP thresholds are not programmable by the customer but the same IC exists with 3 different OVPs.

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requirement on OVP function device