Quasi-resonant Inverter

Quasi resonant inverter is a single IGBT ended configuration utilizing parallel resonance between induction coil and capacitance. It is one of configurations generally used in induction heating applications to make the voltage between collector and emitter sinusoidal. So when IGBT switches, the turn-on loss is almost negligible and the turn-off loss mainly affected by IGBT current tail is reduced substantially. The advantage of a single end quasi-resonant inverter is the use of a relative small heat sink and simple control. On the contrary the high voltage of sinusoidal waveform could do stress out IGBT which results in the increase of cost.

Fairchild’s technologically innovative high frequency IGBTs, which are fully lined up from 900V to 1700V, make it possible to provide high performance and reliability in the system, in addition to low cost. Especially, 1000V and 1200V NPT-Trench IGBT offer high current density, high speed switching and low conduction losses, which are essential requirements of the system.

AC Input	Products	BV_CES (V)	I_C @ 100°C	V_{CE (sat)}		t_f (ns)	Built in FRD	Package
AC Input	Products	BV_CES (V)	I_C @ 100°C	V	@I_c=, V_GE=	t_f (ns)	Built in FRD	Package
110V	SGL60N90DG3	900	42	2	60A, 15V	250	O	TO-264
110V	FGL60N100BNTD	1000	60	2.5	60A, 15V	130	O	TO-264
220V	FGA15N120AN	1200	15	2.4	15A, 15V	60		TO-3P
	FGA15N120AND	1200	15	2.4	15A, 15V	60	O	TO-3P
	FGA15N120ANTD	1200	15	1.9	15A, 15V	100	O	TO-3P
	FGA25N120AN	1200	25	2.5	25A, 15V	45		TO-3P
	FGA25N120AND	1200	25	2.5	25A, 15V	45	O	TO-3P
	FGA25N120ANTD	1200	25	2	25A, 15V	100	O	TO-3P
	SGL40N150D	1500	20	3.5	40A, 15V	100	O	TO-264

Powerful IGBT Solution for Induction Heating Appliances
Half-bridge resonant Inverter