Guru
Joined: 08/02/2015
Location: New ZealandPosts: 1204
| Posted: 10:53am 11 Apr 2026 |
Here is the synchronous rectifier board, 6 of these fit on a 100x100mm pcb
The boards push into slots in the host motherboard and solder directly. The mosfet driver provides full isolation between input and output.
Dead-time generator is just a delay with adjustable times on leading and trailing edges of the PWM, prob be around the 100-200 nSec, will setup using a scope.
Board has right angle header pins, push fit into a socket.
The forward converter should be good for approx 400-500w without over heating, the 110v mosfets used have a 0.002R on resistance, perhaps a little more @6-7 volts.
The main motherboard has 30 amp right angle pcb terminals with 4mm bolts for attaching the pcb vertically.
Both forward converter and DT generator are on same 100 x 89mm pcb, cut with large tin snips.
Motherboard, 178x152mm, 16 rectifier modules set in slots, solder blobbed connections arranged radially around the large ferrite core. I haven't made a schematic for this yet and probably wont until fully built and sorted. The terminal connector at the bottom has an opto-isolated input for external ON\Off control and a local test switch + an output relay possibly for "Balancing" status.
Will do some more checking, then send these off to be made.
Edited 2026-04-12 08:42 by Solar Mike