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#1 |
ANALOG DESIGN
diyAudio Member
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hello folks,
here is something i have been working on for some time. I am willing to offer the pcbs as a group guy. let me know if there is interest. I will share a bom to GB subscribers, all mouser based, if GB goes ahead. regards Prasi Edit 1: Group buy closed for THT PCBs, but still open for SMD PCBs. More info in the below link. Group Buy List group list qty_new - Google Sheets Schematic SMD LT4320 rectifier LT4320 based active rectifier Schematic THT LT4320 rectifier LT4320 based active rectifier Schematic LT4320 CRC PSU PCB: LT4320 based active rectifier Edit 2: Revision in prices. (price drop!) LT4320 based active rectifier Edit 3: GB closed for SMD PCBs. Only last 10 pairs of THT pcbs remain. THT BOM BY MERLIN EL MAGOO LT4320 based active rectifier EDIT 4: New GB for LT4320 based CRC PSU PCB Started..PCB's Produced and being shipped..-Completed and closed... 1. The Design: LT4320 based active rectifier 2. The PCB design: LT4320 based active rectifier 3. Physical PCB's: LT4320 based active rectifier 4. The BoM : LT4320 based active rectifier EDIT 5: Group buy sign up has begun for modified SMD and THT rectifier boards with ENIG finish and earlier LT4320+CRC PSU PCBs. Please sign up at the below google sheet with your DIYA username and qty required against each pcb type. LT4320 based active rectifier Some 3D views of how the actual PCB assembly looks like SMD: LT4320 based active rectifier THT: LT4320 based active rectifier CRC PSU PCB : LT4320 based active rectifier
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My revamped site https://sites.google.com/site/analogdesign1234/ Last edited by prasi; 4th June 2020 at 03:56 PM. |
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#2 |
diyAudio Member
Join Date: Aug 2003
Location: Near Rotterdam
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Hi Prasi,
Some questions, if allowed: - Can you please elaborate on why this is interesting? - Can it replace an existing rectifier bridge? - How difficult is it to solder? |
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#3 |
ANALOG DESIGN
diyAudio Member
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1. minimal power dissipation, no heatsink for rectifier, higher DC voltage output for a given AC voltage, etc
2. yes, it is a drop in replacement for SIP-4 type rectifiers. 3. THT option for LT4320 provided, MOSFETs are SMD, but will be simple to solder for anyone who has soldered SMD's before. regards Prasi
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My revamped site https://sites.google.com/site/analogdesign1234/ |
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#4 |
Got Foam?
diyAudio Member
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I think more info on this is available here before it spun off onto its own thread. This version uses a double-die MOSFET. I can attest that this topology works very well - almost no heat, added headroom due to no voltage drop across silicon diodes, smooth switching with no noise spikes since phase is timed with zero crossing:
GB: CRCRC PSU I am using this type of rectifier in the SLB PSU because of these advantages. Nice little rectifier you are planning to make here, Prasi.
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XRKaudio https://www.etsy.com/shop/XRKAudio Last edited by xrk971; 13th April 2019 at 03:41 PM. |
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#5 |
ANALOG DESIGN
diyAudio Member
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thanks x, yes, there will be some improvements for sure from tester ones, still working on them.
need to find some time.
__________________
My revamped site https://sites.google.com/site/analogdesign1234/ |
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#6 |
diyAudio Member
Join Date: Nov 2002
Location: Australia
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Hi prasi, do you think there would be more demand for your PCB if you made it using through hole components rather than SMT devices.
I assume you are trying to make it as small as possible. |
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#7 |
Got Foam?
diyAudio Member
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EYou could use 4 x TO220 MOSFETs with no heatsink. The LT4320 is already TH as an option. Just add a spot for 1uF ceramic x7r radial cap.
The SMT keeps package about same size as the monolithic bridges.
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XRKaudio https://www.etsy.com/shop/XRKAudio Last edited by xrk971; 13th April 2019 at 11:12 PM. |
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#8 |
diyAudio Member
Join Date: Dec 2006
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Subscribed. Would like to try this out. I wish the 4320 controller chip is cheaper though
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#9 |
diyAudio Member
Join Date: Jan 2010
Location: Somerset, England
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Interesting
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#10 | |
ANALOG DESIGN
diyAudio Member
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Quote:
regards Prasi
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My revamped site https://sites.google.com/site/analogdesign1234/ |
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