I'm embarked on a project to build a high quality, reliable, pure sine wave inverter, rated at 220V, 4kW continuous output, with 48V input. Over the last few days I have been playing with an EGS002 SPWM driver board, that has the EG8010 SPWM chip on it. I found several quirks, troubles, problems, that raise doubts as to whether it is a good idea to use this board and even this IC.
Is there anybody around here who has used it, tried it, tested it, and would like to discuss these issues?
Hi,
I have used quite a few EGS002 pcb's for inverter projects where the DC voltage is from 2 x 12v batteries and my purpose designed pcb incorporates changeover circuitry and a small constant current constant voltage charger for sealed lead acid batteries. This is essentially for emergency lighting applications where LED lamps are being used. For low voltage work, these modules are very good and operate well. I have incorporated a very small isolation transformer in my feedback circuit to ensure none of the output is seen on the pcb so everything is isolated between the low voltage battery side and the high voltage AC sections. I have tried to replicate a high voltage bridge circuit with a 360v DC rail but have destroyed several EGS002 modules and a few output devices. The driver chips, IR2110 &2113 are designed for high voltage applications but something is clearly not good with the EGS002 circuit as I cannot trace any faults that could cause such major failures. I then purchased a kit from AliExpress featuring the identical components and this also would not work and destroyed several drive pcb's. I either need to stick with low powered circuitry operating at either 24 or 48 volts or obtain some very technical advice and circuitry practices before I attempt to look at higher powered bridge circuits for bigger inverters. Any thoughts would be very welcome.
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