1200V-150mW SiC Cascode
Rev. A, April 2019
DATASHEET
Description
UF3C120150K4S
CASE
CASE
D (1)
United Silicon Carbide's cascode products co-package its highperformance F3 SiC fast JFETs with a cascode optimized MOSFET to
produce the only standard gate drive SiC device in the market today.
This series exhibits very fast switching using a 4-terminal TO-247package and the best reverse recovery characteristics of any device
of similar ratings. These devices are excellent for switching inductive
loads, and any application requiring standard gate drive.
Features
w Typical on-resistance RDS(on),typ of 150mW
w Maximum operating temperature of 175°C
G (4)
w Excellent reverse recovery
w Low gate charge
KS (3)
w Low intrinsic capacitance
w ESD protected, HBM class 2
S (2)
1 2 34
w TO-247-4L package for faster switching, clean gate waveforms
Typical applications
w EV charging
Part Number
Package
Marking
UF3C120150K4S
TO-247-4L
UF3C120150K4S
w PV inverters
w Switch mode power supplies
w Power factor correction modules
w Motor drives
w Induction heating
Datasheet: UF3C120150K4S
Rev. A, April 2019
1
Maximum Ratings
Parameter
Symbol
VDS
VGS
Drain-source voltage
Gate-source voltage
Continuous drain current 1
ID
Pulsed drain current 2
Single pulsed avalanche energy 3
Power dissipation
Maximum junction temperature
Operating and storage temperature
IDM
EAS
Ptot
TJ,max
TJ, TSTG
Max. lead temperature for soldering,
1/8” from case for 5 seconds
TL
Test Conditions
DC
TC = 25°C
TC = 100°C
TC = 25°C
L=15mH, IAS =2A
TC = 25°C
Value
Units
1200
-25 to +25
18.4
13.8
38
30
166.7
175
-55 to 175
V
V
A
A
A
mJ
W
°C
°C
250
°C
1. Limited by TJ,max
2. Pulse width tp limited by TJ,max
3. Starting TJ = 25°C
Thermal Characteristics
Parameter
Symbol
Thermal resistance, junction-to-case
RqJC
Datasheet: UF3C120150K4S
Test Conditions
Rev. A, April 2019
Value
Min
Typ
Max
0.7
0.9
Units
°C/W
2
Electrical Characteristics (TJ = +25°C unless otherwise specified)
Typical Performance - Static
Parameter
Drain-source breakdown voltage
Total drain leakage current
Total gate leakage current
Drain-source on-resistance
Gate threshold voltage
Gate resistance
Symbol
Test Conditions
BVDS
VGS=0V, ID=1mA
IDSS
IGSS
RDS(on)
VG(th)
RG
Value
Min
Typ
Max
1200
V
VDS=1200V,
VGS=0V, TJ=25°C
2
VDS=1200V,
VGS=0V, TJ=175°C
17
VDS=0V, TJ=25°C,
VGS=-20V / +20V
4
20
VGS=12V, ID=5A,
TJ=25°C
150
180
VGS=12V, ID=5A,
TJ=175°C
VDS=5V, ID=10mA
Units
50
mA
mA
mW
330
3.5
f=1MHz, open drain
4.4
4.6
5.5
V
W
Typical Performance - Reverse Diode
Parameter
Diode continuous forward current 1
Diode pulse current
2
Forward voltage
Test Conditions
IS
TC=25°C
18.4
A
IS,pulse
TC=25°C
38
A
VFSD
Reverse recovery charge
Qrr
Reverse recovery time
trr
Reverse recovery charge
Qrr
Reverse recovery time
trr
Datasheet: UF3C120150K4S
Value
Symbol
Min
Typ
VGS=0V, IF=5A,
TJ=25°C
1.46
VGS=0V, IF=5A,
TJ=175°C
2
VR=800V, IF=13A,
VGS=-5V, RG_EXT=22W
di/dt=1700A/ms,
TJ=25°C
VR=800V, IF=13A,
VGS=-5V, RG_EXT=22W
di/dt=1700A/ms,
TJ=150°C
Rev. A, April 2019
Max
Units
2
V
67
nC
24
ns
64
nC
24
ns
3
Typical Performance - Dynamic
Parameter
Value
Symbol
Test Conditions
Ciss
Coss
Crss
VDS=100V, VGS=0V
f=100kHz
738
58
1.8
pF
Effective output capacitance, energy
related
Coss(er)
VDS=0V to 800V,
VGS=0V
34
pF
Effective output capacitance, time
related
Coss(tr)
VDS=0V to 800V,
VGS=0V
68
pF
COSS stored energy
Eoss
VDS=800V, VGS=0V
10.8
mJ
Total gate charge
Gate-drain charge
Gate-source charge
QG
QGD
QGS
VDS=800V, ID=13A,
VGS = -5V to 12V
25.7
6
10
nC
Turn-on delay time
td(on)
Input capacitance
Output capacitance
Reverse transfer capacitance
Rise time
Turn-off delay time
Fall time
tr
td(off)
tf
Turn-on energy
EON
Turn-off energy
EOFF
Total switching energy
Turn-on delay time
Rise time
Turn-off delay time
Fall time
ETOTAL
td(on)
tr
td(off)
tf
Turn-on energy
EON
Turn-off energy
EOFF
Total switching energy
Datasheet: UF3C120150K4S
ETOTAL
VDS=800V, ID=13A,
Gate Driver =-5V to
+12V,
Turn-on RG,EXT=8.5W,
Turn-off RG,EXT=22W
Inductive Load,
FWD: same device with
VGS=-5V, RG=22W,
TJ=25°C
VDS=800V, ID=13A,
Gate Driver =-5V to
+12V,
Turn-on RG,EXT=8.5W,
Turn-off RG,EXT=22W
Inductive Load,
FWD: same device with
VGS=-5V, RG=22W,
TJ=150°C
Rev. A, April 2019
Min
Typ
Max
Units
21
8
26
ns
8
170
26
mJ
196
18
6
26
ns
7
152
26
mJ
178
4
40
40
30
30
Drain Current, ID (A)
Drain Current, ID (A)
Typical Performance Diagrams
Vgs = 15V
Vgs = 7V
Vgs = 6.5V
Vgs = 6V
Vgs = 5.5V
20
10
20
Vgs = 15V
Vgs = 7V
Vgs = 6.5V
10
Vgs = 6V
Vgs = 5.5V
0
0
0
1
2
3
4
5
6
7
8
9
Drain-Source Voltage, VDS (V)
10
Figure 1. Typical output characteristics at TJ = 55°C, tp < 250ms
0
2
3
4
5
6
7
8
9
Drain-Source Voltage, VDS (V)
10
Figure 2. Typical output characteristics at TJ = 25°C,
tp < 250ms
40
2.5
On Resistance, RDS_ON (P.U.)
Vgs = 15V
Drain Current, ID (A)
1
Vgs = 6V
30
Vgs = 5.5V
Vgs = 5V
Vgs = 4.5V
20
10
2.0
1.5
1.0
0.5
0.0
0
0
1
2
3
4
5
6
7
8
9
Drain-Source Voltage, VDS (V)
Figure 3. Typical output characteristics at TJ = 175°C,
tp < 250ms
Datasheet: UF3C120150K4S
-75 -50 -25 0 25 50 75 100 125 150 175
Junction Temperature, TJ (°C)
10
Figure 4. Normalized on-resistance vs. temperature
at VGS = 12V and ID = 5A
Rev. A, April 2019
5
30
Tj = 175°C
Tj = 25°C
Tj = - 55°C
600
500
400
300
200
Tj = 25°C
Tj = 175°C
20
15
10
5
100
0
0
0
5
10
15
20
25
Drain Current, ID (A)
30
35
Figure 5. Typical drain-source on-resistances at VGS =
12V
0
2 3 4 5 6 7 8
Gate-Source Voltage, VGS (V)
9
10
Gate-Source Voltage, VGS (V)
20
5
4
3
2
1
0
-100
1
Figure 6. Typical transfer characteristics at VDS = 5V
6
Threshold Voltage, Vth (V)
Tj = -55°C
25
Drain Current, ID (A)
On-Resistance, RDS(on) (mW)
700
15
10
5
0
-5
-50
0
50
100
150
Junction Temperature, TJ (°C)
Figure 7. Threshold voltage vs. junction temperature
at VDS = 5V and ID = 10mA
Datasheet: UF3C120150K4S
0
200
10
20
30
Gate Charge, QG (nC)
40
Figure 8. Typical gate charge at VDS = 800V and ID =
13A
Rev. A, April 2019
6
0
-2
Vgs = -5V
-4
Vgs = 5V
Vgs = 0V
Vgs = 8V
-6
-8
-10
-12
Vgs = 0V
-4
Vgs = 5V
Vgs = 8V
-6
-8
-10
-12
-14
-14
-4
-3
-2
-1
Drain-Source Voltage, VDS (V)
0
Figure 9. 3rd quadrant characteristics at TJ = -55°C
-4
-3
-2
-1
Drain-Source Voltage, VDS (V)
0
Figure 10. 3rd quadrant characteristics at TJ = 25°C
0
25
-2
20
-4
EOSS (mJ)
Drain Current, ID (A)
Vgs = - 5V
-2
Drain Current, ID (A)
Drain Current, ID (A)
0
-6
Vgs = - 5V
-8
Vgs = 0V
-10
15
10
Vgs = 5V
5
Vgs = 8V
-12
0
-14
-4
-3
-2
-1
Drain-Source Voltage, VDS (V)
Figure 11. 3rd quadrant characteristics at TJ = 175°C
Datasheet: UF3C120150K4S
0
0
200
400
600
800 1000
Drain-Source Voltage, VDS (V)
1200
Figure 12. Typical stored energy in COSS at VGS = 0V
Rev. A, April 2019
7
10,000
20
Ciss
1,000
100
16
DC Drain Current, ID (A)
Capacitance, C (pF)
18
Coss
10
14
12
10
8
6
4
Crss
2
0
1
0
-75 -50 -25 0 25 50 75 100 125 150 175
Case Temperature, TC (°C)
200 400 600 800 1000 1200
Drain-Source Voltage, VDS (V)
Figure 13. Typical capacitances at f = 100kHz and
VGS = 0V
Figure 14. DC drain current derating
Thermal Impedance, ZqJC (°C/W)
Power Dissipation, Ptot (W)
200
150
100
50
0
-75 -50 -25 0 25 50 75 100 125 150 175
Case Temperature, TC (°C)
Figure 15. Total power dissipation
Datasheet: UF3C120150K4S
1
0.1
0.01
D = 0.5
D = 0.3
D = 0.1
D = 0.05
D = 0.02
D = 0.01
Single Pulse
0.001
1.E-06 1.E-05 1.E-04 1.E-03 1.E-02 1.E-01
Pulse Time, tp (s)
Figure 16. Maximum transient thermal impedance
Rev. A, April 2019
8
400
1ms
10ms
100ms
Switching Energy (mJ)
Drain Current, ID (A)
10
1
1ms
DC
300
250
200
Etot
Eon
Eoff
150
100
50
10ms
0
0.1
1
0
10
100
1000
Drain-Source Voltage, VDS (V)
Figure 17. Safe operation area at TC = 25°C, D = 0,
Parameter tp
5
10
15
Drain Current, ID (A)
20
25
Figure 18. Clamped inductive switching energy vs.
drain current at TJ = 25°C
250
70
60
200
Turn-Off Energy, EOFF (mJ)
Turn-on Energy, EON (mJ)
VDD = 800V, VGS = -5V/12V
RG_ON = 8.5W, RG_OFF = 22W
FWD: same device with VGS
= -5V, RG = 22W
TJ = 25°C
350
150
100
VDD = 800V, VGS = -5V/12V
ID = 13A, TJ = 25°C
FWD: same device with VGS = -5V,
RG = 22W
50
50
40
30
20
VDD = 800V, VGS = -5V/12V
ID = 13A, TJ = 25°C
FWD: same device with VGS = -5V
10
0
0
0
5
10
15
20
25
Total External RG, RG,EXT_ON (W)
Figure 19. Clamped inductive switching turn-on
energy vs. RG,EXT_ON
Datasheet: UF3C120150K4S
0
30
20
40
60
80
Total External RG, RG,EXT_OFF (W)
100
Figure 20. Clamped inductive switching turn-off
energy vs. RG,EXT_OFF
Rev. A, April 2019
9
100
Etot
Eon
Eoff
200
90
80
70
150
100
Qrr (nC)
Switching Energy (mJ)
250
VGS = -5V/12V, RG_ON = 8.5W, RG_OFF
= 22W, FWD: same device with VGS
= -5V, RG = 22W
50
60
50
40
VDD = 800V, IS =13A,
di/dt = 1700A/ms,
VGS = -5V, RG =22W
30
20
10
0
0
0
25
50
75 100 125 150
Junction Temperature, TJ (°C)
175
Figure 21. Clamped inductive switching energy vs.
junction temperature at VDS = 800V and ID = 13A
0
25
50
75 100 125 150
Junction Temperature, TJ (°C)
175
Figure 22. Reverse recovery charge Qrr vs. junction
temperature
Applications Information
SiC cascodes are enhancement-mode power switches formed by a
high-voltage SiC depletion-mode JFET and a low-voltage silicon
MOSFET connected in series. The silicon MOSFET serves as the
control unit while the SiC JFET provides high voltage blocking in the
off state. This combination of devices in a single package provides
compatibility with standard gate drivers and offers superior
performance in terms of low on-resistance (RDS(on)), output
capacitance (Coss), gate charge (QG), and reverse recovery charge
(Qrr) leading to low conduction and switching losses. The SiC
cascodes also provide excellent reverse conduction capability
eliminating the need for an external anti-parallel diode.
Information on all products and contained herein is intended for
description only. No license, express or implied, to any intellectual
property rights is granted within this document.
United Silicon Carbide, Inc. assumes no liability whatsoever relating
to the choice, selection or use of the United Silicon Carbide, Inc.
products and services described herein.
Like other high performance power switches, proper PCB layout
design to minimize circuit parasitics is strongly recommended due to
the high dv/dt and di/dt rates. An external gate resistor is
recommended when the cascode is working in the diode mode in
order to achieve the optimum reverse recovery performance. For
more information on cascode operation, see www.unitedsic.com.
Disclaimer
United Silicon Carbide, Inc. reserves the right to change or modify
any of the products and their inherent physical and technical
specifications without prior notice. United Silicon Carbide, Inc.
assumes no responsibility or liability for any errors or inaccuracies
within.
Datasheet: UF3C120150K4S
Rev. A, April 2019
10