LM76002: Current Limit

Brian Wang0928

Part Number: LM76002

In the d/s, there are three types of the current limit. One is high side current limit, another is low side current limit other is Negative current limit.

What's the negative current limit? Is negative current generated during CCM operation mode?

Could you explain the different in between? Very thanks.

over 3 years ago

+1 Frank De Stasi over 3 years ago

TI__Guru 64365 points

Hello

The negative current limit is designed to protect the low side MOSFET from over-current.

When in FPWM mode you may have current flowing in the opposite direction to the normal flow, during a transient or

light load.

The attached note may be helpful in explaining the other forms of current limit.

Thanks

Advanced_current_limit_revA.pptx

0 Brian Wang0928 over 3 years ago in reply to Frank De Stasi

TI__Genius 12680 points

Another question is that why the high side current limit range is different to low side current limit range? Why both are not identical design?

+1 Frank De Stasi over 3 years ago in reply to Brian Wang0928

TI__Guru 64365 points

Hello

The peak and valley current limit circuits are very different, and will have different variations in their respective current limits.

Thanks

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LM76002: Current Limit