Cascode Charge Balance During ZVS Turn-OFF
Improper charge balance
results in Si avalanche
Significant energy loss
Properly balanced Cascode
no avalanche, full ZVS
No energy loss
APEC 2015 Seminar S17
64
X. Huang, W. Du, Z. Liu, F. C. Lee, and Q. Li, “Performance
Analysis of Cascode GaN Device,” CPES Review, Nov 18, 2013
I
L
V
sw
V
DS-Si
Avalanche
Measured Results: IR-Infineon Cascode