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LT4320 based active rectifier

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#542
prasi said:
the "only rectifier" THT and SMD boards are all gone. I think I will produce few more of those in near future, may be 50 pairs each. People keep asking me .

Meanwhile I will also produce a few more of these CRC boards just to take care of sporadic requirements.
Click to expand...

randytsuch said:
Are you going to order more LT4320 based CRC PSU PCBs too?

I plan to buy some THT rectifier boards, but how many depends on your answer.

Thanks
Randy
Click to expand...

yes, I have ordered
1. SMD and THT rectifier boards - 60 pairs
2. LT4320-CRC PSU PCBs - 50 nos.

regards
Prasi
 
#545
SMD and THT rectifier only boards

tomtest: SMD: 4 pairs, THT 4 Pairs
wgh52: SMD 18 pairs, THT 16 pairs
randytsuch = SMD 2 pairs , THT 3 pairs
alazira: THT 6 pairs

Total : 24 pairs SMD , 29 pairs THT

LT4320 based CRC PSU PCBs

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

total 14 nos.
 
#547
SMD and THT rectifier only boards

tomtest: SMD: 4 pairs, THT 4 Pairs
wgh52: SMD 18 pairs, THT 16 pairs
randytsuch = SMD 2 pairs , THT 3 pairs
alazira: THT 6 pairs
grufti = SMD 4 pairs

Total : 28 pairs SMD , 29 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.
 
#550
Changed pairs

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

Total : 34 pairs SMD , 30 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.
 
#551
Just about to stuff my CRC PCB's but I managed to order the wrong DIL socket so will have to wait for some more 🙁
A couple of quick questions from a noob though! What is the purpose of C1, C9 and R9? Are these all optional?
 
#552
A couple of pics of the boards to see if everything looks ok? Minus the LT4320's as I can't mount them until I get the correct DIL sockets.
 

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#554
analog_sa said:
No problem with the staggering but why all these snubbers? No harm done only these circuits require no snubbers.
Click to expand...

Hi,
Could you elaborate on this? As I understood it, standard diode bridge rectification triggers ringing because of the 0.6 cutoff of the diodes--but 4320 cures that by turning on/off at 0 crossover. But are there not other triggers for ringing that could occur? I've been wondering this for a while.
I understood that the snubbers were still being recommended, and thus assumed other transients could induce the ringing--although perhaps not so frequently.
Or is there another reason you consider the snubbers unneccesary?
Ron
 
#557
mpa said:
Just about to stuff my CRC PCB's but I managed to order the wrong DIL socket so will have to wait for some more 🙁
A couple of quick questions from a noob though! What is the purpose of C1, C9 and R9? Are these all optional?
Click to expand...

Hello mpa,
nicely done.
C1 is a small electrolytic about 220uf, that would help reduce inductance. suggested by a kind member.
C9/R9 is an output snubber.


regards
Prasi
 
#558
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 = SMD=4 PAIRS, THT= 4 PAIRS

Total : 38 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.
 
#560
zman01 said:
Regarding MOSFETs, I am looking at other options besides the CSD19535KCS listed as an example in Prasi's bill of materials.

How about STP110N8F6?

Suggestions are welcome. 🙂
Click to expand...

Qg is quite high.
Somewhere towards the beginning of thread tvicol and myself had posted suggestions regarding suitability criteria.
low Qg, High VDs, Low Rds-on and Vgsth=2.5-4.5, etc.

please read it. Also For SMD/THT rectifier only boards i had posted sch with many options.
Also some suggestions by Danny_66
LT4320 based active rectifier
 
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