US 12,144,087 B2
Induction heating circuit, protection circuit and cooling system for an appliance
Johnson Thie, Alexandria (AU); Duncan Hellmers, Alexandria (AU); and Stephen John McClean, Alexandria (AU)
Assigned to BREVILLE PTY LIMITED, Alexandria (AU)
Appl. No. 17/256,977
Filed by BREVILLE PTY LIMITED, Alexandria (AU)
PCT Filed Jun. 28, 2019, PCT No. PCT/AU2019/050684
§ 371(c)(1), (2) Date Dec. 29, 2020,
PCT Pub. No. WO2020/000053, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 2018902364 (AU), filed on Jun. 29, 2018.
Prior Publication US 2021/0127464 A1, Apr. 29, 2021
Int. Cl. H05B 6/12 (2006.01); G01R 15/20 (2006.01); G01R 19/00 (2006.01); H03K 5/24 (2006.01); H05B 6/06 (2006.01); H05B 6/10 (2006.01); H05K 7/20 (2006.01)
CPC H05B 6/12 (2013.01) [G01R 15/202 (2013.01); G01R 19/0092 (2013.01); H03K 5/24 (2013.01); H05B 6/06 (2013.01); H05B 6/102 (2013.01); H05K 7/20136 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A protection circuit for protecting an induction heating circuit in an appliance, the protection circuit comprising:
a monitoring circuitry arranged to monitor a switching device in an induction heating circuit, wherein a first voltage, a second voltage and a current are monitored by the protection circuit; and
logic circuitry configured for clamping a switching signal for the switching device on the basis of the first voltage, second voltage, and current, wherein the first voltage is indicative of a turn on voltage across the switching device, the second voltage is indicative of a maximum over voltage across the switching device, and the current is indicative of a maximum current through the switching device.