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LM34936-Q1: Lm34936-q1

Rudra prasad1
Prodigy 30 points
Part Number: LM34936-Q1
Other Parts Discussed in Thread: LM34936, LM5170

Hi,

i need information for the below queries

1.we need buck boost controller for high power rating , please find the below voltage and current rating .

VIn=6 to 36V

Vout=12V to 25V

Iout=24V@45A (continuous)

Efficiency : more than 95%

if you have any part support more than 30A also please suggest.

2.And one more query is ,LM34936 can design up to 40A to 50A @24V? if it support please suggest the design consideration.

Regards,

Rudraprasad.V

  • 0
    TI__Guru 68495 points

    Hi Rudra,

    Thank you for reaching out and for considering our solution.  Your are at the good start point by looking at a buck-boost controller.  For the operating voltage range, the LM34936 can support.  However, its integrated drivers are not strong enough for this 2kW power level.  And 2kW for 6V input means >300A.  You should consider multiphase, and also consider the external driver. 

    Another approach is to consider 4 phase LM5170 in back to back configuration.  We have 1kW ref designs in two phases using two LM5170.  You can add parallel LM5170 to make support 2kW.  The 12V-12V voltage can be modified to fit for your application. Please refer to for the concept:

    https://www.ti.com/tool/PMP15035

    Thanks,

    Youhao Xi, Applications Engineering