Guru
Joined: 02/02/2017
Location: AustraliaPosts: 1471
| Posted: 05:49am 25 Jan 2026 |
63 parts.
4 fets
2 bulk caps 63V 3300uF
5 v1 highside drive
5 v2 highside
4 v1 lowside
4 v2 lowside
5 Vdd signal contitioning
2 v1 pulse maker IR2184
2 v1 pulse maker
18 Vfb signal conditioning
3 Heat sink 10 NTC signal conditioning
3 underneath Nano
1 nano
3 15V -> 5V linear reg
some 0.1" pin headers
2 heat sink fan FET and gate pull down resistor
I use HY5608 FETs and when fed 50V, only need to switch about 40A so I
think these FETs will be just fine.
idle current was 0.2A DC at 54V input for 239V AC output.
The toroid makes a huge difference in idle power and I am running
this one well below any hint of saturation.
I'm really quite happy with it.
Obviously I could build it with thicker V1 and V2 output cables but I
just could not be arsed, really.
It runs the picoverter code, which features low DC voltage shutdown
with auto restart, fan control for the heat sink and heat sink over temp shutdown.
The semiconductors are:
HY5608 80V 360A 1.5 mOhm Rds(on)
IR2186 gate drive IC
FOD3182 gate drive IC
LM358 dual opamp
LM7805 linear reg
any old logic level FET to drive the fan
it worked first time I applied power!
Edited 2026-01-25 15:50 by poida
wronger than a phone book full of wrong phone numbers