This instruction is compatible with the following ICs
· IR2122S, IR2127S, IR2128S

Schematics (.dsn)
PCB Layout (OrCad)

See AN-1014: Using Current Sensing IR212X Gate Driver ICs for further details

BOM

Part Type	Designator	Description	Order Number	Vendor
.33µF, 25V	C1	Capacitor, 1206	PCC1889CT-ND	Digikey
.33µF, 25V	Cbs	Capacitor, 1206	PCC1889CT-ND	Digikey
.1µF, 630V	Cbus	Polypropylene Capacitor	P3521-ND	Digikey
600V, 1A	D1	Fast Recovery Diode, SMB	MURS120DICT-ND	Digikey
600V, 1A	Dbs	Fast Recovery Diode, SMB	MURS120DICT-ND	Digikey
600V, 23A IGBT	Q1	IGBT UFAST 600V 23A TO-220AB	IRG4BC30U-ND	Digikey
33Ω	R1	Resistor, 0805	P33ACT-ND	Digikey
3Ω	R2	Resistor, 0805	P3ACT-ND	Digikey
3Ω	R3	Resistor, 0805	P3ACT-ND	Digikey
4.7Ω	Rfault	Resistor, 0805	P4.7ACT-ND	Digikey
Various	Rg	Resistor, 0805	Various
HI Side Driver	U1	High side driver SOIC8	IR2127S*	IR

* U1 can be any compatible ICs from the list above

MOSEFT and Gate Resistor

IC	Transistor	R-on	R-off	Ton(nS)	Toff (nS)	Tr(nS)	Tf(nS)	Vbus(V)
IR2127	IRFIBC20G	33	3.3	224	238	8.4	206	200
IR2127	IRG4BC20UD	33	3.3	238	266	9.8	336	200
IR2127	IRG4BC30UD	33	3.3	265	322	17.4	336	200