t-type advanced 3-level inverter module power dissipation...
TRANSCRIPT
Electronic Devices Business Headquarters All copy rights are reserved. 1
T-type Advanced 3-level Inverter Module
Power dissipation and comparison tables
1. Introduction of Advanced 3-level Inverter Module
2. Inverter Mode comparison in 300A modules
3. Rectifier Mode comparison in 300A modules
4. RB-IGBT device characteristics
特许专业代理商WESTPAC ELECTRONICS LIMITED
威柏电子
特许专业代理商WESTPAC ELECTRONICS LIMITED
威柏电子
富士 IGBT武汉技术支持,富士 IGBT华中,西南,西北技术支持: 王鹏 手机:15989854023 电话:027-8705 4728 电子邮件:[email protected] 富士 IGBT青岛技术支持,富士 IGBT青岛,东北技术支持: 牟军 手机:13589207451 电话:0532-8580 3033 电子邮件:[email protected] 富士 IGBT上海技术支持,富士 IGBT华东,华北技术支持: 杨雪 手机:15919925496 电话:021-5489 1461 电子邮件:[email protected] 富士 IGBT深圳技术支持,富士 IGBT华南技术支持: 吴龙 手机:13590310423 电话:0755-8826 2914 电子邮件:[email protected]
中国区富士 IGBT模块应用技术支持团队
香港威柏电子(Westpac Electronics)创办於 1992年,为日本富士电机(FUJI ELECTRIC)半导体器件之中国及香港地区专业代理。主要产品为 FUJI 富士电源 IC,FUJI 富士 MOSFET,FUJI富士三极管,FUJI富士超快恢复二极管,FUJI 富士肖特基二极管,FUJI 富士单管 IGBT,FUJI富士 Super J-MOS,FUJI富士电机 IGBT模块,FUJI富士电机 IPM模块,FUJI富士电机 PIM 功率集成模块,FUJI 富士电机分立 IGBT,FUJI 富士智能功率模块,FUJI 富士三电平IGBT模块,FUJI富士汽车级 IGBT模块等。 威柏电子 以客为本 Westpac ELectronics Customer-based service FUJI ELECTRIC富士电机简介: 富士电机早在 1923年成立以来,一直致力于技术革新和挑战,为顾客提供高质量的服务。 富士电机集团是“向客户提供最大满足的企业”的代名词。不断向具有独创性的技术革新挑
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高效化和节能做贡献! FUJI ELECTRIC富士电机功率半导体致力于在“节约电力”和“创造电力”可靠且高效的应用,为人类绿色可持续发展不断努力! FUJI ELECTRIC Innovating Energy Technology 富士电机 不断创新的能源科技 Westpac威柏:WESTPAC威柏-FUJI富士 IGBT模块中国一级代理 WESTPAC威柏-FUJI富士 IGBT一级代理商 WESTPAC威柏-FUJI富士 IGBT一级代理 WESTPAC威柏-FUJI富士IGBT中国代理商 WESTPAC威柏-FUJI富士 IGBT代理商 WESTPAC威柏-富士 IPM代理商 WESTPAC威柏-FUJI富士 IGBT模块代理 WESTPAC威柏-FUJI IGBT module distributor WESTPAC威柏-FUJI ELECTRIC IGBT MODULE DISTRIBUTOR WESTPAC 威柏-FUJI 富士 IGBT 深圳代理 WESTPAC 威柏-FUJI 富士 IGBT 授权分销 WESTPAC 威柏-FUJI 富士 IGBT 授权代理 WESTPAC 威柏-FUJI 富士 IGBT 上海代理 WESTPAC 威柏-FUJI 富士 IGBT 北京代理 WESTPAC 威柏-FUJI 富士 IGBT 成都代理 WESTPAC 威柏-FUJI 富士 IGBT 青岛代理 WESTPAC 威柏-FUJI 富士 IGBT 武汉代理 WESTPAC威柏-FUJI富士 IGBT西安代理 Westpac威柏针对工业电力电子领域以 FUJI ELECTRIC富士电机 IGBT模块(包括富士 IPM模块、富士 PIM模块、FUJI富士 IGBT驱动 IC)為核心,威柏配合国际知名品牌功率器件:富士 IGBT驱动器,富士 IGBT驱动器解决方案,富士 IGBT模块专用驱动,富士 IGBT模块定制驱动晶闸管,WESTPAC威柏-可控硅 SCR、WESTPAC威柏-电力MOSFET、WESTPAC威柏-MOSFET模块,WESTPAC威柏-电力二极管、WESTPAC威柏-二极管模块、单相整流桥、叁相整流桥等。Westpac威柏同时可以為客户提供 IGBT驱动方案及配套单片机MCU、DSP、高速光耦、隔离光耦、电源 IC、平波用铝电解电容及薄膜电容、IGBT突波吸收电容等元件。业务遍及轨道交通、智能电网(HVDC)、通用变频器、高压变频器、伺服驱动器 、UPS、变频与传动、电动汽车、电力系统无功补偿装置 UPS逆变器/UPS/EPS、风电变流器、变频空调、光伏变流、机车主牵引变流器、电梯变频器 、起重专用变频器 、 感应加热、电源电镀/电解电源 、有源滤波/无功补偿、机车辅助逆变器、逆变焊机;Westpac威柏在电
特许专业代理商WESTPAC ELECTRONICS LIMITED
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能质量(APF,SVG)、逆变焊机、不间断电源 UPS、Inverter变频器、数控伺服、电动汽车、风力太阳能发电等领域与客户战略合作,全力支持中国电力电子工业发展! 威柏电子致力于工业节能和新能源市场的拓展 香港威柏电子(Westpac Electronics)于 1996年成为 BC components(后被 VISHAY收购)分立元件授权分销商;威柏电子于 2005年正式成为 VISHAY国内汽车全线电子元器件代理及各电子行业之分立元件代理; VISHAY, BCcomponents, Sprague, Dale, Beyschlag, Vishay Semiconductors, Sfernice, Siliconix VISHAY 代理(VISHAY 一级代理 VISHAY 中国代理商 VISHAY 汽车电子元器件专业代理)。 vishay vishay代理商 vishay semiconductor vishay代理 vishay.com VISHAY威柏 www.vishay.com vishay 电阻 VISHAY 电容 vishay dale vishay 公司简介 vishay siliconix vishay电容 ESTA电力电容 Sfernice功率电阻 vishay 一级代理商 vishay 中国代理商 vishay 电容代理商 vishay 电阻代理商 vishay 代理 VISHAY代理商威世代理商 vishay 电阻代理 vishay 深圳代理 vishay 授权分销 VISHAY 授权代理 VISHAY 上海代理 VISHAY北京代理 VISHAY成都代理 VISHAY青岛代理 VISHAY西安代理 VISHAY武汉代理 香港威柏电子(Westpac Electronics)于 2012年成为青铜剑电力电子科技(Bronze Tech)IGBT驱动产品的代理,主要产品有 2QD30A17K-I,2QD15A17K-C,2QD23-S,IGBT 串联专用驱动器等。作为富士电机半导体器件国内最大的代理商,威柏电子完善的销售网络、丰富的市场经
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持,必定能够实现双赢,与我们在新能源、智能电网、工业节能等领域的客户协力合作,促
进中国电力电子行业的飞速发展。 威柏电子致力于工业节能和新能源市场的拓展
特许专业代理商WESTPAC ELECTRONICS LIMITED
威柏电子
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2-level, NPC and A-NPC 3-level control
A-NPC 3level is suitable topology for High efficiency alternative Energy systems.
Type 2-level Inverter
NPC 3-level Inverter A-NPC 3-level
with Reverse series
A-NPC 3-level
with RB-IGBT
Circuit
Device IGBT:1200V IGBT:600V IGBT:1200V
+600V(Reverse series)
IGBT:1200V
+600V(RB-IGBT)
Output
Voltage
On-loss Small Large Large Small
SW-loss Large Small Small Small
Filter loss Large Small Small Small
Composing Easy Complication Easy Easy
Total Normal Normal Good Excellent
T1
T2
T1
T2
T3
T4
T1
T2T4T3
P
U
N
C
M
T1
T2T4
T3
P
U
N
M
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950 .0570 .0 570 .0 570 .0
562 .7
221 .7 271 .8 282 .9
596 .4
1008 .0 684 .8 651 .9
2109 .11799 .7
1526 .6 1504 .8
0
500
1000
1500
2000
2500
1 2 3 4
Lo
sse
s i
n I
nve
rte
r M
ode
(W)
2-level, NPC and A-NPC 3-level control comparison,
in Inverter Mode
A-NPC 3level is suitable topology for High efficiency alternative Energy systems.
2-level Inverter (2L) NPC 3-level Inverter (NPC) A-NPC 3-level
Reverse series RB-IGBT
IGBT:1200V IGBT:600V IGBT:1200V/600V, RB-IGBT:600V
T1
T2
T3
T4
T1
T2
T1
T2T4T3
P
U
N
C
M
T1
T2T4
T3
P
U
N
M
A-NPC 3-level (RB-IGBT) A-NPC 3-level (Reverse series) NPC 3-level 2-level
71.3% 72.4% 85.3% 100%
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950.0570.0 570.0 570.0
562.7
243.3 326.3 336.0
573.5
939.6 635.0 602.1
2086.21752.9
1531.3 1508.1
0
500
1000
1500
2000
2500
1 2 3 4Loss
es
in R
ecti
fer
Mode
(W)
2-level, NPC and A-NPC 3-level control comparison,
in Rectifier Mode
A-NPC 3level is suitable topology for High efficiency alternative Energy systems.
2-level Inverter (2L) NPC 3-level Inverter (NPC) A-NPC 3-level
Reverse series RB-IGBT
IGBT:1200V IGBT:600V IGBT:1200V/600V, RB-IGBT:600V
T1
T2
T3
T4
T1
T2
T1
T2T4T3
P
U
N
C
M
T1
T2T4
T3
P
U
N
M
A-NPC 3-level (RB-IGBT) A-NPC 3-level (Reverse series) NPC 3-level 2-level
72.2% 73.4% 84.0% 100%
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Equivalent circuit
Fuji A-NPC 3-level inverter Module “100A Type”
Type name : 12MBI100VN-120-50
12MBI100VX-120-50
T1,T2 : 1200V/100A
T3,T4 : 600V/100A
For 400V class AC output
12MBI100VN-120-50 Outline View
12MBI100VN-120-50
12MBI100VX-120-50
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Fuji A-NPC 3-level inverter Module “300A Type”
Equivalent circuit (T3 and T4 are RB-IGBT)
Package outline
T1
T2T4
T3
P
U
N
M
T1 G
T1/T4 E
T2 G
T2 E
T3 E T3 G
C T4 G
Type name : 4MBI300VG-120R-50
T1,T2 : 1200V/300A
T3,T4 : 600V/300A
For 400V class AC output
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Inverter Mode comparison in 300A modules
2-level; 2MBI300VH-120-50
NPC 3-level; 2MBI300VB-060-50 series
Advanced 3-level; 4MBI300VG-120R-50
Conditions;
100kVA Inverter
AC 400V, Io=145A, cosθ=1
Vdc=660V(330V+330V), Modulation rate =0.98
Tj=125deg,
Rg(T1,T2)=+10/-1ohm, Rg(T3,T4)=+8.2/-39ohm
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0
1,000
2,000
3,000
4,000
5,000
0 10 20 30
Fc (kHz)
Dis
sip
ati
on
Lo
ss
(W
)
2-Level
NPC 3-Level
Advanced 3-Level
RB-IGBT
Total Loss Comparison in “Inverter Mode”
Advanced 3-level module achieves lowest loss in 30kHz
and less carrier frequency
Total Loss
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0%
50%
100%
150%
200%
250%
300%
350%
400%
0 10 20 30Fc (kHz)
Dev
ice L
oss
(%
)
2-Level
NPC 3-Level
Advanced 3-Level
RB-IGBT
Device Loss comparison in “Inverter Mode”
Advanced 3-level module achieves lowest loss in 30kHz
and less carrier frequency
Device Loss as 5kHz loss=100%
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950.0570.0 570.0
562.7
221.7 282.9
596.4
1008.0651.9
2109.1
1799.7
1504.8
0
500
1,000
1,500
2,000
2,500
1 2 32-Level NPC 3-Level A- 3Level
Dis
sip
ati
on
Lo
ss
es
(W
)
Von Loss
SW Loss
Filter Loss950.0
570.0 570.0
562.7
221.7 282.9
596.4
1008.0651.9
2109.1
1799.7
1504.8
0
500
1,000
1,500
2,000
2,500
1 2 32-Level NPC 3-Level A- 3Level
Dis
sip
ati
on
Lo
ss
es
(W
)
Von Loss
SW Loss
Filter Loss
Von Loss
SW Loss
Filter Loss
Loss Comparison in fc=5kHz “Inverter Mode”
Total loss of A-3level Inverter is lowest in 5kHz “Inverter Mode”
30% loss reduction from 2-level Inverter
17% loss reduction from NPC 3-level Inverter
100% 85% 71%
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Device Loss Analysis in fc=5kHz “Inverter Mode”
T1 and T4 FWD of A-3 level is not flowed the current.
CD1
CD2
89.6 67.0
83.9
25.7
10.9
17.4
39.0
16.3
20.7
9.8
29.1
84.0 24.7 9.0
17 9.8
0
50
100
150
200
250
1 2 3
Devi
ce L
oss
(W
)
2 - Level NPC 3 - Level A - 3Level
T1,T2
IGBT
Poff
Pon
Psat
T1,T2
FWD Prr
Pf
T1,T4
IGBT
Psat
Pon
T2,T3
IGBT
P f
Pf
Poff
CD1,2
FWD
P rr
193W 193W 205W 205W 155W 155W
T1,T2
IGBT
Psat
Pon
T3,T4
RB - IGBT
Prr
Psat
Poff
89.6 67.0
83.9
25.7
10.9
17.4
39.0
16.3
20.7
9.8
29.1
84.0 24.7 9.0
17 9.8
0
50
100
150
200
250
1 2 3
Devi
ce L
oss
(W
)
2 - Level NPC 3 - Level A - 3Level
T1,T2
IGBT
Poff
Pon
Psat
T1,T2
FWD Prr
Pf
T1,T4
IGBT
Psat
Pon
T2,T3
P f
Psat
Poff
CD1,2
FWD
P rr
193W 193W 205W 205W 155W 155W
IGBT
Psat
Pon
T3,T4
RB - IGBT
Prr
Psat
Poff
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Rectifier Mode comparison in 300A modules
2-level; 2MBI300VH-120-50
NPC 3-level; 2MBI300VB-060-50 series
Advanced 3-level; 4MBI300VG-120R-50
Conditions;
100kVA Inverter
AC 400V, Io=145A, cosθ=1
Vdc=660V(330V+330V), Modulation rate =0.98
Tj=125deg
Rg(T1,T2)=+10/-1ohm, Rg(T3,T4)=+8.2/-39ohm
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0
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
4,500
0 5 10 15 20 25 30 35
Fc (kHz)
Dis
sip
ati
on
Lo
ss (
W)
2-Level
NPC 3-Level
Advanced 3-Level
RB-IGBT
Total Loss Comparison in “Rectifier Mode”
Advanced 3-level module achieves lowest loss in 20kHz
and less carrier frequency
Total Loss
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0%
50%
100%
150%
200%
250%
300%
350%
400%
0 10 20 30
Fc (kHz)
Devic
e L
oss(%
)
2-Level
NPC 3-Level
Advanced 3-Level
RB-IGBT
Device Loss comparison in “Rectifier Mode”
Advanced 3-level module achieves lowest loss in 20kHz
and less carrier frequency
Device Loss as 5kHz loss 100%
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Loss Comparison in fc=5kHz “Rectifier Mode”
Total loss of A-3level Inverter is lowest in 5kHz “Rectifier Mode”
30% loss reduction from 2-level Inverter
14% loss reduction from NPC 3-level Inverter
100% 84% 72%
950.0570.0 570.0
562.7
243.3 336.0
573.5
939.6 602.1
2086.2
1752.91508.1
0
500
1,000
1,500
2,000
2,500
1 2 3
Dis
sip
ati
on
Lo
ss
es
(W
)
Von Loss
SW Loss
Filter Loss
2-Level NPC 3-Level A- 3Level
950.0570.0 570.0
562.7
243.3 336.0
573.5
939.6 602.1
2086.2
1752.91508.1
0
500
1,000
1,500
2,000
2,500
1 2 3
Dis
sip
ati
on
Lo
ss
es
(W
)
Von Loss
SW Loss
Filter Loss
Von Loss
SW Loss
Filter Loss
2-Level NPC 3-Level A- 3Level
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Device Loss Analysis in fc=5kHz “Rectifier Mode”
T1 and T4 FWD of A-3 level is not flowed the current.
CD1
CD2
10.1
25.7
39.0
85.5
61.1 75.6
29.1
13.4
20.5 17.3
24.7 10.9
14.0
16.3
21.5 30.6
17.1
0
20
40
60
80
100
120
140
160
180
200
2level NPC 3level A-3level
Devi
ce L
oss
(W)
189W 189W 167W 167W 156W 156W
T1,T2
IGBT
Poff
Pon
Psat
T1,T2
FWD
Prr
Pf
T1,T4
FWD
Pf
Prr
T2,T3
IGBT
T2,T3
FWD
P f
Poff
Pon Psat
CD1,2
FWD Pf
T1,T4
FWD
Pf
Prr
T3,T4
RB - IGBT
Poff
Pon
Psat
10.1
25.7
39.0
85.5
61.1 75.6
29.1
13.4
20.5 17.3
24.7 10.9
14.0
16.3
21.5 30.6
17.1
0
20
40
60
80
100
120
140
160
180
200
2level NPC 3level A-3level
Devi
ce L
oss
(W)
189W 189W 167W 167W 156W 156W
T1,T2
IGBT
Poff
Pon
Psat
T1,T2
FWD
Prr
Pf
T1,T4
FWD
Pf
Prr
T2,T3
IGBT
T2,T3
FWD
P f
Poff
Pon Psat
CD1,2
FWD Pf
T1,T2
FWD
Pf
Prr
T3,T4
RB - IGBT
Poff
Pon
Psat
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Reduction control of RB-IGBT leakage current
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570.0 570.0
282.9 282.9
651.9 651.9
16.30.0
1521.21504.8
0
200
400
600
800
1000
1200
1400
1600
Advanced 3-Level
RB-IGBT with Leakage Current
Reduction Control
Advanced 3-Level without Leakage
Current Reduction Control
RB-IGBT Leakage Current Loss in “300A type”
100% 100.01%
Von Loss
SW Loss
Filter Loss
Leakage
Current Loss
RB-IGBT leakage Current loss is extremely low at Tj=125deg
Junction temperature, Tj, must be below 125deg
Devic
e l
osses (
W)
A-3 Level module
With Leakage Current Reduction
Control
A-3 Level module
Without Leakage Current Reduction Control
+0.01%
Only
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-15
-10
-5
0
-800 -600 -400 -200 0
Vce (V)
Jc (A
/cm
2)
Jc(m
A/c
m2)
Vge=0V
Vge=+15V
(Leakage current)
Leakage current can be reduced
with Vg=+15V
p+
Collector
n-
p p
n+ n+
Emitter Gate
p+ p+
Depletion region
+
ー
RB-IGBT Leakage current
Vge=0V~-15V
Tj=125℃
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RB-IGBT device characteristics
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Dicing Surface
Depletion region
Negative bias
GND
N-
P+ P+
P+
Active Scribe
Carrier generation at dicing surface
Conventional IGBT
Cross sectional diagram of RB-IGBT
Junction Isolation region
Dicing
Surface
Depletion region
GND
Negative bias
P+
P+ P+
N-
Active Scribe
RB-IGBT
Electronic Devices Business Headquarters All copy rights are reserved. 22
-1000 -500 0 500 1000-1x10
-3
-5x10-4
0
5x10-4
1x10-3
RB-IGBT
(GE short)
Tj=25oC
Conventional NPT-IGBT
(VGE
=+15V)
RB-IGBT
RB-IGBT (VGE
=+15V)
I C
(A
)
VCE
(V)
Blocking voltage
Forward -> <- Reverse
Blocking voltage characteristics of RB-IGBT
Electronic Devices Business Headquarters All copy rights are reserved. 23
Eo
ff(m
J)
@T
j=125
deg
C IGBT + FWD
600V/100A device
RB-IGBT
Vce(sat) @Tj=125degC
Eo
ff(m
J)
@T
j=125
deg
C IGBT + FWD
600V/100A device
RB-IGBT
Vce(sat) @Tj=125degC
Trade-off relationship for RB-IGBT
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The switching waveforms of RB-IGBT
Condition:
T3 switching T1-FWD recovery mode
Tj=RT, Vcc2=400V, Ic=300A, RG=+8.2/-39ohm
VGE(T3)=+/-15V, VGE(T4)=+15V,
snubber=1.84uF, Ls=34nH
Condition:
T1 switching T4 RB-IGBT recovery mode
Tj=RT, Vcc2=400V, Ic=300A, RG=+10ohm
VGE(T1)=+/-15V, VGE(T4)=+15V,
snubber=1.84uF, Ls=34nH
Turn-on
VGE: 10V/div
VCE: 100V/div
IC: 100A/div
t: 200ns/div
VCE
IC
VGE
Turn-off
VGE: 10V/div
VCE: 100V/div
IC: 100A/div
t: 500ns/div
VGE
VCE
IC
Riverse-recovery
VCE: 100V/div
IC: 100A/div
t: 200ns/div
IC
VCE
IC
Riverse-recovery
VCE: 100V/div
IC: 100A/div
t: 500ns/div
VCE IC
Fuji RB-IGBT can be realized of fast switching operation same as normal IGBT and FWD.
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RB-IGBT Turn-On, Turn-OFF measurement Circuit
P
U
N
+
M
T4
VGE = +15V
T3
T1
VGE = -15V
T2
VGE = -15V
1.8uFVcc2
Ls=34nH
M403
400V
Ic
Vce
Wiring Inductance
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P
U
N
+
M
T2
VGE = -15V
1.8uFVcc2
Ls=34nH
T3
VGE = -15V
T4
VGE = +15V
T1
Wiring Inductance
M403
400V
Ic
Vce
RB-IGBT Reverse Recovery measurement Circuit
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Mechanism of RB-IGBT Leakage current
p+
n-
p+
Collector
Emitter
Reverse Voltage(-Vce)
n+
Electron
Hole
Hole
Gate
Mechanism at reverse voltage
Generation of hole at Reverse voltage area
↓
Electron flow through the emitter area
↓
This electron is base current of PNP transistor
↓
Generation of Hole at P-layer
↓
Generation of Large leakage current
Reverse voltage area
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Reduction method of Leakage current
(i) G-E short (ii) VGE=+15V n+ Channel
Electron flows the n+ of Emitter
⇒ Not generation of Hole
“pn diode operation”
⇒ Small Leakage current
p+
n-
p+
Reverse volgate
n+
Electron
Hole p+
n-
p+
Collector
Emitter
Base
Reverse Voltage
n+
pnp Base Open
⇒ Generation of hole from emitter
⇒ Large Leakage current
Electron
Hole
Hole
Gate
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When RB-IGBT uses the FWD mode, please input the Vge = +15V.
Because the Leakage current of RB-IGBT is larger when the Vge=0V.
RB-IGBT leakage current can be reduced with Vge=+15V.
T1
T2
T4
T3
P
U
N
M
=
Io
Vge=+15V
T4 Gate
T2 Gate
T3 Gate
-10V
-10V
+15V
+15V
+15V
-10V
When T3 uses the FWD mode,
please input the Vge = +15V of T3.
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Comparison of Device Loss (12in1 module “100A Type”)
Conditions:
20kVA Inverter
AC 400V, Io=30A, cosθ=0.9
Vdc=700V(350V+350V)
Modulation rate =0.8
Tj=125C, Rg=datasheet value
2-Level: 7MBR100VN120-50
NPC 3-level: 7MBR100VZ060-50
A-NPC 3-level : 12MBI100VN-120-50
0
50
100
150
200
250
0 5 10 15 20 25 30 35 40
Carrier Frequency (kHz)
Po
wer
Dis
sip
ati
on
(W)
2-Level
NPC 3-Level
Advanced 3-Level
RB-IGBT
“100A Type” switching loss is same level of NPC 3level.
The Total loss of “100A Type A-3level” is the smallest in all the frequency ranges.
There is no crossing point.
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Notes 香港总公司-富士 IGBT模块|富士 IPM模块香港一级代理: 威柏电子有限公司.
Westpac Electronics Limited. 香港九龙观塘成业街 7号宁晋中心 33字楼 B室 电话: (852)2763 5991 传真: (852)2343 6979 电邮: [email protected] [email protected]
国内办事处: Westpac威柏电子深圳分公司-富士 IGBT模块|富士 IPM模块深圳一级代理: 深圳市威柏德电子有限公司 深圳: 深圳市福田区金田路诺德中心 17楼 B室 电邮: [email protected] 电话: 0755-88267606 88262913 88262910 88262908 传真: 0755-88267406 深圳富士 IGBT销售热线:13728745337 ,15013641390,18603038578, 13145906660
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