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Old 13th December 2019, 01:24 AM   #561
zman01 is offline zman01  Bangladesh
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LT4320 based active rectifier
Thank you Prasi.

Can you please advise on soldering the TH LT4320 directly on to the PCB vs using a socket?

I was looking up DIP 2 row 8 pin socket and saw the amp rating was only 1A. Wouldn't that be too low for the LT4320?
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Old 13th December 2019, 01:36 AM   #562
prasi is offline prasi  India
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LT4320 based active rectifier
Quote:
Originally Posted by zman01 View Post
Thank you Prasi.

Can you please advise on soldering the TH LT4320 directly on to the PCB vs using a socket?

I was looking up DIP 2 row 8 pin socket and saw the amp rating was only 1A. Wouldn't that be too low for the LT4320?
LT4320 is just gate controller and doesnt need high amperage.
All high current flow happens between source and drain of mosfets.
Socket makes it easy to remove and replace the chip if required in future.
Believe me, replacing an DIP IC soldered directly to PCB is PIA without proper tools and support of another person.
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Old 13th December 2019, 01:40 AM   #563
prasi is offline prasi  India
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LT4320 based active rectifier
SMD and THT rectifier only boards

tomtest: SMD: 10 pairs, THT 5 Pairs
wgh52: SMD 18 pairs, THT 16 pairs
randytsuch = SMD 2 pairs , THT 3 pairs
alazira: THT 6 pairs
grufti = SMD 4 pairs
Destroyer OS THT= 4 PAIRS

Total : 34 pairs SMD , 34 pairs THT

LT4320 based CRC PSU PCBs

vvs07 = 4 nos.
randytsuch = 2 nos.
tubesguy = 2 nos.
windwardmt = 4 nos.
alazira = 2 nos
grufti = 2 nos

total 16 nos.
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Old 13th December 2019, 02:45 AM   #564
zman01 is offline zman01  Bangladesh
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LT4320 based active rectifier
Quote:
Originally Posted by prasi View Post
LT4320 is just gate controller and doesnt need high amperage.
All high current flow happens between source and drain of mosfets.
Socket makes it easy to remove and replace the chip if required in future.
Believe me, replacing an DIP IC soldered directly to PCB is PIA without proper tools and support of another person.
Prasi,

Very helpful - thank you for the guidance.

For MOSFET, will probably go for IPP040N06NAKSA1, one of choices listed by danny_66:

LT4320 based active rectifier
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Old 13th December 2019, 03:38 AM   #565
Vunce is online now Vunce  United States
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LT4320 based active rectifier
Quote:
Originally Posted by zman01 View Post
Thank you Prasi.

Can you please advise on soldering the TH LT4320 directly on to the PCB vs using a socket?

I was looking up DIP 2 row 8 pin socket and saw the amp rating was only 1A. Wouldn't that be too low for the LT4320?
Hi Zman,

I use dip8 sockets for all my LT4320 based psu’s. Reason being is the are pricey little fellas at $10 a piece. I can remove them from inactive components and install them into the currently used component. Doing this, I really only need 6 LT4320’s. But you must be very careful with removal/install and it does get to be a PITA
Sometimes my ‘frugal-ness’ gets the better of me, LOL!
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Old 13th December 2019, 04:25 AM   #566
zman01 is offline zman01  Bangladesh
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LT4320 based active rectifier
Good advice Vunce.

I don't plan to yank out the LT4320 too many times... but as you said, at $10+ a piece one might feel the need to swap 'em in and out among various projects.
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Old 13th December 2019, 06:35 AM   #567
Destroyer OS is offline Destroyer OS  United States
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LT4320 based active rectifier
Hi, I PM’d but perhaps your inbox is full. Put me down for 4 through hole pairs please.
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Old 13th December 2019, 06:35 AM   #568
Roundtoit is offline Roundtoit  United States
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LT4320 based CRC PSU PCBs arrived today. Excellent quality. Thanks for your work.
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Old 13th December 2019, 08:15 AM   #569
analog_sa is offline analog_sa  Europe
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LT4320 based active rectifier
Quote:
Originally Posted by Rinman77 View Post
I understood that the snubbers were still being recommended
Of course they are, people love repeating mantras I see no spikes at all on the scope with the 4320, yet have issues using these rectifiers in very low noise applications.

For some reason there are several commercial/gb threads on the 4320 running atm but not even one where the operation specifics are being discussed. Says lots about general diyers mentality. Having a technical discussion inside a GB thread is just too annoying.
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Old 13th December 2019, 09:10 AM   #570
RainfallSky is offline RainfallSky  Russian Federation
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Quote:
Originally Posted by zman01 View Post
Prasi,

Very helpful - thank you for the guidance.

For MOSFET, will probably go for IPP040N06NAKSA1, one of choices listed by danny_66:

LT4320 based active rectifier
For now I collect list of probably compatible THT FET's for LT4320.
Maybe you will find some interesting:

Infineon Technologies IPP029N06NAKSA1 (60V, 100A, Vgs(th) 2.1V, RDS(on) 2.7 mOhms, Qg 66 nC)
https://mouser.com/ProductDetail/726-IPP029N06NAKSA1

Infineon Technologies IPP029N06N (60V, 100A, Vgs(th) 2.1V, RDS(on) 2.7 mOhms, Qg 66 nC)
https://mouser.com/ProductDetail/IPP029N06N

Infineon Technologies IPI029N06NAKSA1 (60V, 100A, Vgs(th) 2.1V, RDS(on) 2.7 mOhms, Qg 66 nC)
https://mouser.com/ProductDetail/IPI029N06NAKSA1

Infineon Technologies IPP040N06NAKSA1 (60V, 80A, Vgs(th) 2.1V, RDS(on) 3.6 mOhms, Qg 44 nC)
https://mouser.com/ProductDetail/IPP040N06NAKSA1

ON Semiconductor / Fairchild FDP045N10A-F102 (100V, 120A, Vgs(th) 4V, RDS(on) 3.8 mOhms, Qg 57 nC)
https://mouser.com/ProductDetail/FDP045N10A-F102

ON Semiconductor / Fairchild FDI045N10A-F102 (100V, 120A, Vgs(th) 4V, RDS(on) 3.8 mOhms, Qg 57 nC)
https://mouser.com/ProductDetail/FDI045N10A-F102

Last edited by RainfallSky; 13th December 2019 at 09:13 AM.
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