IEEE Electrification Magazine - June 2020 - 9
Scalability and Growth
GaN switches are extremely fast and routinely used in the
radio-frequency amplifiers at gigahertz frequencies,
although at much lower voltages, but show the ability as
both use the GaN HEMT structure. Since the GaN devices are
very fast and can be used in applications with high dV/dt
and high dI/dt, care must be taken to optimize the PCB layouts. To minimize parasitic inductances, layout optimization
is pretty much fundamental to power GaN use. To maximize
the performance of surface-mount packages and low inductance, high-current, high-performance modules are essential
Si wafers are widely available in different sizes. GaN on Si
wafers allows us to use 150- and 200-mm metal organic
chemical vapor deposition reactors for epi growth and can be
processed in silicon semiconductor fab plants. As the Sibased fab infrastructure can be used, this makes the volume
growth much more of a commercial reality. Tremendous
growth potential is better addressed with power GaN
technology on Si. The processing cost also is very much
like Si, which makes it a very attractive proposition.
Applications and Performance
15
Vgs = 8 V
10
Vgs = 4 V
5
Ids (A)
Whether it is the ac/dc PFC stage, a
dc/dc converter (Figure 5), or traction inverter (Figure 6), the basic
building block for most topologies
is a half-bridge (Figure 7). Hence,
when GaN FETs are compared
against Si FETs in a simple boost
converter, the GaN FET shows its
superior performance by the differences in material properties. All of
these applications can take advantage of these benefits and reduce
losses. Advantages against Si IGBTs
come from the light load, high temperatures, and higher frequencies
when the losses are very high compared to power GaN FETs.
GaN FET losses are significantly
lower due to the absence of reverse
recovery losses and switching crossover losses. It is possible to achieve
nearly ideal turn on and off losses
with dV/dt of approximately 200 V/ns.
0
-5
Vgs = 3 V
I
Vgs = 0 V,
III 1 V, 2 V
-10
-15
-3
-1
0
Vds (V)
(a)
D
1
2
3
D
D
G
G
G
S
S
S
(b)
(c)
(d)
Figure 4. The GaNFET operation: (a) cascode GaN HEMT, (b) forward conduction, (c) reverse
-conduction 1, and (d) reverse conduction 2.
PFC
GaN
Power 6.6 kW FET
-2
400-Vdc Bus
Isolated dc-dc
(Bidirectional)
Si GaN
FET FET
GaN GaN
FET FET
GaN
FET
HV
Battery
(280-420 Vdc)
240-Vac +
Single
Phase -
GaN
FET
Si GaN
FET FET
GaN GaN
FET FET
GaN
FET
ac-dc Converter for OBC
and dc-ac Inverter
Figure 5. The ac-dc PFC stage and isolated dc-dc configuration.
IEEE Elec trific ation Magazine / J UNE 2 0 2 0
9
IEEE Electrification Magazine - June 2020
Table of Contents for the Digital Edition of IEEE Electrification Magazine - June 2020
Contents
IEEE Electrification Magazine - June 2020 - Cover1
IEEE Electrification Magazine - June 2020 - Cover2
IEEE Electrification Magazine - June 2020 - Contents
IEEE Electrification Magazine - June 2020 - 2
IEEE Electrification Magazine - June 2020 - 3
IEEE Electrification Magazine - June 2020 - 4
IEEE Electrification Magazine - June 2020 - 5
IEEE Electrification Magazine - June 2020 - 6
IEEE Electrification Magazine - June 2020 - 7
IEEE Electrification Magazine - June 2020 - 8
IEEE Electrification Magazine - June 2020 - 9
IEEE Electrification Magazine - June 2020 - 10
IEEE Electrification Magazine - June 2020 - 11
IEEE Electrification Magazine - June 2020 - 12
IEEE Electrification Magazine - June 2020 - 13
IEEE Electrification Magazine - June 2020 - 14
IEEE Electrification Magazine - June 2020 - 15
IEEE Electrification Magazine - June 2020 - 16
IEEE Electrification Magazine - June 2020 - 17
IEEE Electrification Magazine - June 2020 - 18
IEEE Electrification Magazine - June 2020 - 19
IEEE Electrification Magazine - June 2020 - 20
IEEE Electrification Magazine - June 2020 - 21
IEEE Electrification Magazine - June 2020 - 22
IEEE Electrification Magazine - June 2020 - 23
IEEE Electrification Magazine - June 2020 - 24
IEEE Electrification Magazine - June 2020 - 25
IEEE Electrification Magazine - June 2020 - 26
IEEE Electrification Magazine - June 2020 - 27
IEEE Electrification Magazine - June 2020 - 28
IEEE Electrification Magazine - June 2020 - 29
IEEE Electrification Magazine - June 2020 - 30
IEEE Electrification Magazine - June 2020 - 31
IEEE Electrification Magazine - June 2020 - 32
IEEE Electrification Magazine - June 2020 - 33
IEEE Electrification Magazine - June 2020 - 34
IEEE Electrification Magazine - June 2020 - 35
IEEE Electrification Magazine - June 2020 - 36
IEEE Electrification Magazine - June 2020 - 37
IEEE Electrification Magazine - June 2020 - 38
IEEE Electrification Magazine - June 2020 - 39
IEEE Electrification Magazine - June 2020 - 40
IEEE Electrification Magazine - June 2020 - 41
IEEE Electrification Magazine - June 2020 - 42
IEEE Electrification Magazine - June 2020 - 43
IEEE Electrification Magazine - June 2020 - 44
IEEE Electrification Magazine - June 2020 - 45
IEEE Electrification Magazine - June 2020 - 46
IEEE Electrification Magazine - June 2020 - 47
IEEE Electrification Magazine - June 2020 - 48
IEEE Electrification Magazine - June 2020 - 49
IEEE Electrification Magazine - June 2020 - 50
IEEE Electrification Magazine - June 2020 - 51
IEEE Electrification Magazine - June 2020 - 52
IEEE Electrification Magazine - June 2020 - 53
IEEE Electrification Magazine - June 2020 - 54
IEEE Electrification Magazine - June 2020 - 55
IEEE Electrification Magazine - June 2020 - 56
IEEE Electrification Magazine - June 2020 - 57
IEEE Electrification Magazine - June 2020 - 58
IEEE Electrification Magazine - June 2020 - 59
IEEE Electrification Magazine - June 2020 - 60
IEEE Electrification Magazine - June 2020 - 61
IEEE Electrification Magazine - June 2020 - 62
IEEE Electrification Magazine - June 2020 - 63
IEEE Electrification Magazine - June 2020 - 64
IEEE Electrification Magazine - June 2020 - Cover3
IEEE Electrification Magazine - June 2020 - Cover4
https://www.nxtbook.com/nxtbooks/pes/electrification_december2022
https://www.nxtbook.com/nxtbooks/pes/electrification_september2022
https://www.nxtbook.com/nxtbooks/pes/electrification_june2022
https://www.nxtbook.com/nxtbooks/pes/electrification_march2022
https://www.nxtbook.com/nxtbooks/pes/electrification_december2021
https://www.nxtbook.com/nxtbooks/pes/electrification_september2021
https://www.nxtbook.com/nxtbooks/pes/electrification_june2021
https://www.nxtbook.com/nxtbooks/pes/electrification_march2021
https://www.nxtbook.com/nxtbooks/pes/electrification_december2020
https://www.nxtbook.com/nxtbooks/pes/electrification_september2020
https://www.nxtbook.com/nxtbooks/pes/electrification_june2020
https://www.nxtbook.com/nxtbooks/pes/electrification_march2020
https://www.nxtbook.com/nxtbooks/pes/electrification_december2019
https://www.nxtbook.com/nxtbooks/pes/electrification_september2019
https://www.nxtbook.com/nxtbooks/pes/electrification_june2019
https://www.nxtbook.com/nxtbooks/pes/electrification_march2019
https://www.nxtbook.com/nxtbooks/pes/electrification_december2018
https://www.nxtbook.com/nxtbooks/pes/electrification_september2018
https://www.nxtbook.com/nxtbooks/pes/electrification_june2018
https://www.nxtbook.com/nxtbooks/pes/electrification_december2017
https://www.nxtbook.com/nxtbooks/pes/electrification_september2017
https://www.nxtbook.com/nxtbooks/pes/electrification_march2018
https://www.nxtbook.com/nxtbooks/pes/electrification_june2017
https://www.nxtbook.com/nxtbooks/pes/electrification_march2017
https://www.nxtbook.com/nxtbooks/pes/electrification_june2016
https://www.nxtbook.com/nxtbooks/pes/electrification_december2016
https://www.nxtbook.com/nxtbooks/pes/electrification_september2016
https://www.nxtbook.com/nxtbooks/pes/electrification_december2015
https://www.nxtbook.com/nxtbooks/pes/electrification_march2016
https://www.nxtbook.com/nxtbooks/pes/electrification_march2015
https://www.nxtbook.com/nxtbooks/pes/electrification_june2015
https://www.nxtbook.com/nxtbooks/pes/electrification_september2015
https://www.nxtbook.com/nxtbooks/pes/electrification_march2014
https://www.nxtbook.com/nxtbooks/pes/electrification_june2014
https://www.nxtbook.com/nxtbooks/pes/electrification_september2014
https://www.nxtbook.com/nxtbooks/pes/electrification_december2014
https://www.nxtbook.com/nxtbooks/pes/electrification_december2013
https://www.nxtbook.com/nxtbooks/pes/electrification_september2013
https://www.nxtbookmedia.com