| Electronics > Repair |
| Xantrex/Sorensen XHR 40-25 schematic? |
| (1/11) > >> |
| ifonlyeverything:
I've recently come into possession of a non-working Xantrex/Sorensen XHR 40-25 power supply. Does anyone happen to have a schematic? I tried searching Google but I can only seem to find an operating manual which doesn't include a schematic. The XKW series service manual/schematic is available but just looking at the board reveals significant differences... |
| coromonadalix:
EDIT see further away so far nothing from xantrex has ever leaked, or maybe some as you suggest, witch is rare ... apparently maybe some lambda TDK may have some similarities, not sure for Sorensen |
| ifonlyeverything:
That's unfortunate, I'll look around for anything TDK that might be comparable. For anyone who has never seen the inside of these.... very EFFICIENT use of space near the output. :palm: |
| ifonlyeverything:
If anyone is familiar with these beasts, I'd appreciate some hints on how the main DC-DC topology works. :) I believe there's a PFC boost upstream. I can see the mains rectifier and then two FETs and two diodes in parallel on the PFC side. On the downstream DC-DC I see four FETs with bootstrapped gate drivers (IR2110), followed by the transformer, output inductor, and output capacitors. But I'm not seeing any rectifiers? |
| coromonadalix:
some power supplies use some kind of a buck boost / buck down configuration / pwm configuration like / or ac phase control and have another section called the main regulator section a mix of switching and linear modes ... not sure if xantrex ones use something like this ?? on the bus bar you have a big black rectangle component, could be an scr, triac or bridge rectifier or even an big IGBT witch would made sense with the nearby ic's, and the thansformer who is in reality an huge inductor seems to confirm the operation the linfinity sg3524 is a classic pwm ic the uc3842 is a 500khz pwm ic too IR2110/IR2113 are high voltage, high speed power MOSFET and IGBT drivers |
| Navigation |
| Message Index |
| Next page |