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What is Metal slotting? I need defintion and merits and deme

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energeticdin

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Metal slotting

Hi All

What is Metal slotting? I need defintion and merits and demerits?

Din
 

Re: Metal slotting

it's needed for wide metal so that mechanical stress will be reduced. It will improve yield, but reduce your metal sheet resistance, hence increase voltage drop along the metal
 

Re: What is Metal slotting? I need defintion and merits and

Can you explain me how IR-drop is more when R reduces ??

By definition R is directly proportional to the supply Voltage
 

Re: What is Metal slotting? I need defintion and merits and

mallikarjunmd said:
Can you explain me how IR-drop is more when R reduces ??

By definition R is directly proportional to the supply Voltage
Click to expand...
R is a physical characteristic of the metal type, thickness, width, and length. It does not vary with supply voltage; it is pretty much constant.

For a given R, I = V / R (Ohm's law), so lower R means higher current. Higher current means more voltage drop.
 

Re: What is Metal slotting? I need defintion and merits and

randyest said:
mallikarjunmd said:
Can you explain me how IR-drop is more when R reduces ??

By definition R is directly proportional to the supply Voltage
Click to expand...
R is a physical characteristic of the metal type, thickness, width, and length. It does not vary with supply voltage; it is pretty much constant.

For a given R, I = V / R (Ohm's law), so lower R means higher current. Higher current means more voltage drop.
Click to expand...

Randy..Just re-check your answer. If "resistance is lower voltage drop is more" it is the case then why do you need to create power grid to lower resistance??
 

you need to reduce the R to reduce the voltage drop for a certain power consumption, and have less voltage difference all over the design, and the std-cell can have the same "timing" behavior.

and to reduce R, you need to increase the area to transport the current.
 

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