TPS62740 bypass mode

Oleksiy Pazyuk

Other Parts Discussed in Thread: TPS62730, TPS62740, TPS62737, TPS62736

Hi,

Does one have information about possibility to realise bypass mode in the TPS62740 as it was in the TPS62730?

According to documentation it is not clear how shutdown mode is provided.
I see that for shut down mode I need to set "EN" pin low. But I don't find if in this case Vin is connected to the Vout as for the automatic transition into 100% mode when Vin falls below VT_{H_100}.

over 11 years ago

0 Florian Feckl over 11 years ago

TI__Expert 7110 points

TPS62740 will truly shut down when you pull EN to low. Then it discharges the output and is deactivated.

Whereas TPS62730 goes in Bypass Mode when pulling ON/BYP low.

This is differently implemented in these devices.

0 Oleksiy Pazyuk over 11 years ago in reply to Florian Feckl

Expert 2585 points

Hi, Florian,

Thanks for the answer.

Am I correct that in the TPS62736 and TPS62737 there is no bypass mode as well?

Could you in this case recommend the DC/DC with output 3.3V and Bypass function in the shut down mode.

0 Florian Feckl over 11 years ago in reply to Oleksiy Pazyuk

TI__Expert 7110 points

Exactly. These device do not have a bypass mode.

I am not aware of another device featuring a bypass mode besides TPS62730.

Power management

Power management forum

TPS62740 bypass mode