LM74700-Q1: Controlling two FETs

Dajon McGill

Expert 4730 points

Part Number: LM74700-Q1
Other Parts Discussed in Thread: LM5060-Q1, , LM5060, LM5050-1

Hey Team,

My customer has asked if the LM74700-Q1 or LM5060-Q1 might work to control two FETs.

Am I able to use the either to control x2 FETs?
Do we have any collateral that can assist in this design?
If not, is there another device/approach I might want to consider?

Best,

Dajon McGill

over 2 years ago

0 Praveen GD over 2 years ago

TI__Guru 57737 points

Hi Dajon,

LM74700-Q1 cannot drive 2 FETs in back-to-back orientation but LM5060 can do this. The reason why LM74700-Q1 cannot drive back-to-back FETs is explained in detail in the below e2e FAQs.

Can an Ideal Diode Controller used as load switch with external MOSFET?

https://e2e.ti.com/support/power-management/f/power-management-forum/994549/faq-can-an-ideal-diode-controller-used-as-load-switch-with-external-mosfet

Can LM5050-1, LM74700-Q1 or TPS241x controllers drive two back-back MOSFETs

https://e2e.ti.com/support/power-management/f/power-management-forum/994550/faq-can-lm5050-1-lm74700-q1-or-tps241x-controllers-drive-two-back-back-mosfets

We do have new devices in road map which can drive back-to-back FETs. For more information please reach out to me offline.

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LM74700-Q1: Controlling two FETs