Connecting LMZ14203(H) in parallel

Markus Erber

Prodigy 40 points

Other Parts Discussed in Thread: LMZ14203, LMZ23608

Hello,

is it possible to connect two or more LMZ14203(H) in parallel to get a higher output current?

Best Regards

over 12 years ago

0 CWilson over 12 years ago

Expert 1920 points

If they can, they should properly share the feedback voltage from the voltage resistor divider.

0 Markus Erber over 12 years ago in reply to CWilson

Prodigy 40 points

It should not be a problem to use one resistor divider for both ICs.

The RMS-current will not be higher than 3A. But I have to handle current peaks of 6A.

So only IC would be capable to handle the average power.

Are there any other problem, rather than current sharing, which have to be considered?

0 Alan Martin over 12 years ago in reply to Markus Erber

TI__Expert 4365 points

Hello there,

Unfortunately the 3A modules (LMZ1420x/xH) are not designed for current sharing. Consider the 6Amp LMZ23606H or the 8 Amp LMZ23608 (scheduled for release in September)

Both of these are rated for 26V max input voltage and up to 15V output level. They also happen to support current sharing. Small quantity samples are available now.

Alan Martin TI-SVA

0 Markus Erber over 12 years ago in reply to Alan Martin

Prodigy 40 points

Hello,

thank you for the information. I will have a look on these ICs.

0 Markus Erber over 12 years ago in reply to Markus Erber

Prodigy 40 points

Hello,

is it possible to get some early samples of the LMZ23608h?

I would need at least 2. If they are not available the LMZ23606H

would be the second choice. I can not find them anywhere on the web site.

Best regards

Markus Erber

0 Colleen Kilroy over 12 years ago in reply to Markus Erber

TI__Prodigy 85 points

Hi Markus,

These products are not available quite yet. They will release in end of September. If you would like samples of the LMZ23608H, please email me at Colleen.Kilroy@ti.com with your mailing address. Thanks for your interest in the power modules!

Regards,

Colleen

Power management

Power management forum

Connecting LMZ14203(H) in parallel