LMZ30604: Can this be a good replacement for EN6347QI 4A Power SoC?

Leo Chow

Part Number: LMZ30604
Other Parts Discussed in Thread: TPSM84424, TPSM82480

Hi,

I would like to verify if LMZ30604 would be a good part to replace EN6347QI which is a 4A Power SoC? Are there anything we need to take note of with regards to this recommendation? Please advise.

Regards,

Leo

over 5 years ago

0 Denislav Petkov over 5 years ago

TI__Mastermind 18940 points

Hello Leo,
The LMZ30604 will work well.
Also, I would also recommend looking at the TPSM84424 if the input voltage is 5V.
Let us know if you need anything else.
Cheers,
Denislav

0 Leo Chow over 5 years ago in reply to Denislav Petkov

TI__Expert 3120 points

Hi Denislav,
Upon looking into the datasheet, I noticed the light load efficiency is not as good compared to EN6347QI. So far I've yet to decide the max current for my application but I'm curious if we can switch power module mode upon light load & switching automatically to PWM upon heavy load? Please advise.

Regards,
Leo

0 Denislav Petkov over 5 years ago in reply to Leo Chow

TI__Mastermind 18940 points

Hello Leo,

Does the application require light load efficiency?
If yes, the TPSM82480 may also be a good option, it can deliver up to 6A and it does have a mode pin to change the mode of operation.

The TPSM84424 and LMZ30604 switch at constant frequency and the tradeoff is lower efficiency at light load.

Cheers,
Denislav

Power management

Power management forum

LMZ30604: Can this be a good replacement for EN6347QI 4A Power SoC?