Live Lamp Driver Application of NCV84160

Mike Donnelly
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Mike Donnelly

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Original member of the PartQuest Explore development team. Modeling and Applications Specialist

Description

Live Application Example of the NCV84160 High Side Protected FET used as a Lamp Driver.

This design illustrates two important features of the NCV84160:

1) Load current limiting (approximately 12A) to control lamp in-rush

2) Over-temperature shut-down with automatic restart

The user can change the battery voltage as well as the lamp power rating and peak inrush current parameters. For example, you can see what would happen if the vehicle owner decides to make the car interior brighter by connecting a 65 Watt/Inrush current 40A automotive headlamp into the interior lamp socket! After making those changes, just push the green "Play" arrow and a new simulation will be run ... after about a minute, you'll see that the NCV84160 limits the peak current to under 12A, and eventually enters on/off thermal limit cycling at an even further reduced peak current level, protecting the upstream power distribution system from the overload condition.

(Note also that the simulation automatically stops after 10 thermal limit cycles, to reduce simulation time for this indefinite failure mode operating condition)

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Design Notification Block

Thanks for trying out PartQuest Explore

Mike Donnelly
Designer19

Mike Donnelly

Member for

Design Notification Block

Thanks for trying out PartQuest Explore

Mike DonnellyDesigner19

Mike Donnelly

Member for

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Mike Donnelly
Designer19