DRV8412: DRV8412 related issues

jeno.zhang

Part Number: DRV8412
Other Parts Discussed in Thread: DRV8962

Tool/software:

hi，

As shown in the figure below, DRV8412 is used as an LED lighting driver. Is DRV8412 equivalent to a BUCK circuit? How does DRV8412 work as an LED lighting driver？

Thanks！

8 months ago

0 Jacob Thompson 8 months ago

TI__Mastermind 23250 points

Hey Jeno,

No, it is not equivalent to a buck circuit. It is more equivalent to several FETs in a 1/2 bridge configuration, like shown in this block diagram below (from DRV8962 as it has better diagrams). It can switch a given V_IN or VM voltage on or off. It cannot step that voltage down to a lower level.

Is this a new design? Please see this FAQ, DRV8412 is an old device and there are better alternatives: https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1256603/faq-what-are-the-best-alternate-devices-for-drv8432

Best,

Jacob

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DRV8412: DRV8412 related issues