TPS7B7701-Q1: TPS7B7701-Q1 / TPS7B7702-Q1 product common application circuit review request

MJ Jeon

Part Number: TPS7B7701-Q1
Other Parts Discussed in Thread: TPS7B7702-Q1

Hi, TI Support Team

The customer is considering applying a common circuit to the TPS7B7702-Q1 due to the supply and demand problem of the TPS7B7701-Q1.

I want to configure it as shown in the following circuit, but is there a problem when each component is applied?

If TPS7B7702-Q1 is applied by the customer, it may not be used for OUT2.

At this time, please review the circuit to see if there is a problem with the function.

Thanks.

Regards,

over 4 years ago

+1 Jason Song over 4 years ago

TI__Mastermind 23361 points

Hi MJ,

For TPS7B7702-Q1, SENSE_SEL should be grounded. EN2 should be grounded as well if this channel isn’t being used. Do you plan to have a new design to use the TPS7B7702-Q1 with only one channel?

Regards,
Jason Song

0 MJ Jeon over 4 years ago in reply to Jason Song

Genius 5240 points

Hi, Jason

I am trying to design a design that can use the TPS7B7702-Q1 and TPS7B7701-Q1 in common by designing as in the circuit diagram above.

Is this impossible with the above circuit?

Thanks.

Regards,

0 MJ Jeon over 4 years ago in reply to MJ Jeon

Genius 5240 points

Hi, Jason

When TPS7B7702-Q1 is applied, only 1 channel is used.

Thanks.

Regards,

+1 Jason Song over 4 years ago in reply to MJ Jeon

TI__Mastermind 23361 points

Yes, it should work.

0 MJ Jeon over 4 years ago in reply to Jason Song

Genius 5240 points

Hi, Jason

Can EN2 be operated by floating instead of ground?

Are you having problems?

As a result, out2 will not be used in the circuit.

I am asking a question because it is difficult to change in the current circuit.

Thanks.

Regards,

0 MJ Jeon over 4 years ago in reply to MJ Jeon

Genius 5240 points

Hi, Jason

Please answer for me.

Thank you.

Regards,

0 Jason Song over 4 years ago in reply to MJ Jeon

TI__Mastermind 23361 points

The EN pin has a maximum internal pull-down of 10 µA and yes, it can be left floating.

Power management

Power management forum

TPS7B7701-Q1: TPS7B7701-Q1 / TPS7B7702-Q1 product common application circuit review request