P channel MOSFET number just like N channel IRFZ 44N

[rajaram04]

Hello

Just like IRFZ44N an N Channel MOSFET
I want to know about the matching commercial P Channel MOSFET number

Please help me in finding it !!!
Thanks . ..

 

[stenzer]

Hi,

a quich websearch leads you to the following discussion

P Channel couterpart for IRFZ44

I have looked but don't find an exact P channel counterpart for the IRFZ44 hexfet. Does anyone know what is the best choice? Thanks.

forum.allaboutcircuits.com

BR

 

[FvM]

As you probably know P channel type has poorer performance than N channel for same chip area. Therefore you can't find an exactly complementary type. If you want similar Rdson, you'll get higher capacitances and gate charge.

If you go for Infineon, IRF4905 is the nearest choice. To select in a wider portfolio, use parametric search engine of distributors, e.g. Digikey after defining your requirements.

 

[D.A.(Tony)Stewart]

Users prefer Dual N with Boost from low side PWM than Complementary Pch || Nch then control deadtime to just exceed worst-case hot Toff times.

Why don't you know how to search?

please help me , poor thing.

 

[rajaram04]

As you probably know P channel type has poorer performance than N channel for same chip area. Therefore you can't find an exactly complementary type. If you want similar Rdson, you'll get higher capacitances and gate charge.

If you go for Infineon, IRF4905 is the nearest choice. To select in a wider portfolio, use parametric search engine of distributors, e.g. Digikey after defining your requirements.

I see, Ya right IRF 4905 is close enough !!
Le me go through that with several exp.
Thanks

--- Updated Feb 20, 2024 ---

Hi,

a quich websearch leads you to the following discussion

P Channel couterpart for IRFZ44

I have looked but don't find an exact P channel counterpart for the IRFZ44 hexfet. Does anyone know what is the best choice? Thanks.

forum.allaboutcircuits.com

BR

Ya OK I am checking with that . . . .

 

[D.A.(Tony)Stewart]

They do have Automotive upgrade versions of the same parts with AU prefix and higher current rated Q charge specs for Typ and Max.

https://www.infineon.com/dgdl/auirf4905s.pdf?fileId=5546d462533600a4015355acd0e513c0

But as Frank said, complementary Nch-Pch makes it harder to match Pch due to the higher RC=Tau rise times for the Vgs and Vds which makes the output more asymmetrical. The critical part is to minimize deadtime yet avoid shootthru at all temperatures and load BEMF.

This is why you'll find Infineon and others using dual Nch with using the low side switch PWM to pump Boost V for high side gate voltage.

There are lots of refence designs on the Infineon site too. Automotive designs demand more safety for redundant cut-off and reverse voltages from incorrect battery boost polarity or similar.

I don't have it anymore , but I made a spreadsheet with every PWR FET and electrical parameters and price , then plotted a scatter plot to find matches or lowest RC=Tau products vs Id. You may find yourself looking SiC and other newer technologies.

Or use Infineon's filters to choose Vds max then the R, Q or C parameters to match.

https://www.infineon.com/cms/en/product/power/mosfet/p-channel/?filterValues=~(search~%27-40)&visibleColumnIds=name,productStatusInfo,orderOnline,opn,522,packageName,869_max,559_93_max,559_90_max,547_136_nom,547_135_nom,478_min,478_max,478_nom,451_154_max,830,529,618,551,284_min,284_max,681_nom#!products