SiC power-module. PEB8038 Datasheet

PEB8038 power-module. Datasheet pdf. Equivalent

PEB8038 Datasheet
Recommendation PEB8038 Datasheet
Part PEB8038
Description Half-bridge SiC power-module
Feature PEB8038; PEB 8038 - Half-bridge SiC power module VDC Ileg,rms fsw, max 800 V 38 A 50 kHz Rev. A / March 20.
Manufacture imperix
Datasheet
Download PEB8038 Datasheet





imperix PEB8038
PEB 8038 - Half-bridge SiC power module
VDC
Ileg,rms
fsw, max
800 V
38 A
50 kHz
Rev. A / March 2021
GENERAL DESCRIPTION
The PEB 8038 is a half-bridge power module featuring
two Silicon Carbide (SiC) MOSFETs. It is designed for use
as a building block for power electronic converters.
Direct access to the gating signals is offered using optical
fiber inputs, while galvanically-isolated on-board sensors
provide analog measurements related to the DC voltage
and the AC output current. The modules also provide on-
board protections against over-current, over-voltage and
over-temperature.
As with all imperix power modules, PEB 8038 are com-
patible for plug-&-play connection to the imperix pro-
grammable controller B-Box RCP, but can also be used
with other digital controllers.
The mechanical design of the modules is tailored for in-
tegration in 19’’ rack-mountable chassis and enclosures.
TYPICAL APPLICATIONS
Imperix modules are perfectly suited to build up ambi-
tious power converter prototypes of any topology, rang-
ing from single- and three-phase inverters to complex
multilevel topologies.
PEB 8038 modules are ideally suited for applications re-
lated to the 230/400VAC grid voltage, although they can
be operated with excellent performance at lower volt-
ages. Thanks to their balanced design, PEB8038 are easy-
to-use, yet very powerful modules, typically allowing the
implementation of three-phase inverters up to 25kW.
Typical applications include:
» Grid-connected inverters (e.g. microgrid)
» Variable-speed motor drives
» Isolated DC/DC converters
» Hard-switched converters
KEY FEATURES AND SPECIFICATIONS
» Half-bridge topology (SiC phase-leg)
» Embedded 600 µF DC bus
» On-board voltage and current sensors
» Over voltage/current/temperature protections
» 1200 V / 103 A SiC MOSFETs
» 800 V nominal DC bus voltage
» 38 A continuous RMS current at 20 kHz
» 20 mΩ typical RDS(on)
» Speed-regulated cooling (140 W TDP)
» 100 x 332 mm Eurocard form factor
SIMILAR PRODUCTS
Other types of half-bridge modules are available from
imperix, with different voltage and current ratings as well
as different semiconductor technologies:
» PEB 8024 – 800 V / 24 A – Faster switching
» PEB 4050 – 400 V / 50 A – Higher current
Other topologies such as full-bridge modules and 3-level
NPC modules are also available.
Current
50
PEB4050
38
PEB8038
30
20
PEH2015
PEB8024
PEN8018
10
PEH4010
Voltage
200
400
600 800
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imperix PEB8038
DEVICE DESCRIPTION
The power module is a ready-to-use power electronic
building block based on the elementary phase-leg ar-
rangement of two power semiconductors. It embeds all
the necessary circuits for simple and proper operation.
IAC
VDC
PWM H
PWM L
Logic
+
drivers
M
+
safety
DC+
A AC
V
Fault
DC-
Fig. 1.  Schematic overview of the PEB 8038 module
In most use cases, several modules are assembled in or-
der to form various power converter topologies. An ex-
ternal power electronic controller, such as the B-Box RCP,
in order to generate the necessary PWM signals.
Power connections
» DC bus terminals (DC+ and DC–)
» Switching midpoint (AC terminal)
» DC bus midpoint (M, optional connection)
Signal connections
» PWM signals inputs (650 nm optical fiber receivers)
» AC current measurement (analog output, RJ45)
» DC voltage measurement (analog output, RJ45)
» Fault feedback signal (650 nm optical fiber emitter)
Auxiliary connections
» 5/12V power supply (local control and cooling fan)
» Module-to-module coordination cable (optional)
TYPICAL APPLICATION
An elementary application of the PEB 8038 power mod-
ule is shown in Fig. 2. The implemented system corre-
sponds to a DC/DC converter in buck configuration, also
known as DC chopper.1 This system produces a control-
lable voltage on the resistive load R, thanks to suitable
PWM signals applied at the input of the power module.
If desired, feedback control can be implemented in order
to improve the stability and / or dynamic performance of
the output current, voltage or power.
Thanks to the rapid implementation of power modules,
experimental validation on power electronic applications
and their control can be facilitated and accelerated.
In order to build a complete power electronic system,
several accessory products may be required, such as:
» A mounting solution (e.g. rack-mountable chassis)
» An auxiliary power supply (e.g. from the chassis)
» A PWM signals generator, or better, a fully-program-
mable digital controller such as the B-Box RCP;
» External current and / voltage sensors (optional);
» Passive components, such as inductors or filters;
» Power sources (e.g. laboratory supply, batteries, grid)
» Electric load (e.g. resistors or regenerative loads)
» Laboratory instruments (e.g. meters, probes)
Controller
PEB 8038
Ib
+
VDC
A
L
V
R
Fig. 2.  Topology of a buck converter using the power module
1  This example and many more are available on the imperix knowledge base.
2



imperix PEB8038
ABSOLUTE MAXIMUM RATINGS
Parameter
Maximum DC bus voltage
Maximum repetitive isolation voltage
Maximum transient isolation voltage (1 s)
Highest allowable junction temperature
Continuous total power dissipation
Maximum auxiliary voltage (5V power supply)
Maximum auxiliary voltage (12V power supply)
Storage temperature
MODULE RATINGS
Symbol
VDC,max
VIORM
VIOTM
TJ(max)
Pcooler,max
V5V,max
V12V,max
Tstor
Test conditions
Power module not switching
Parameter
DC bus voltage 1
Maximum continuous leg current 2
Maximum pulsed leg current
Maximum DC bus ripple current 3
Symbol
VDC
Ileg,max
Ileg,pulsed
IRIPPLE
Test conditions
TC = 100°C, fSW = 20 kHz
Reverse conduction in the channel 4
Pulse width limited by TJ(max)
f = 120 Hz
f = 100 kHz
Max.
900
1.4
3.0
175
140
5.5
13.2
50
Unit
V
kVPEAK
kVPEAK
°C
W
V
V
°C
Min.
Typ.
Max.
Unit
0
800
850
V
-
38
-
ARMS
-
80
-
ARMS
-
8.0
-
ARMS
-
16.0
-
ARMS
Derating curves
Depending on the real operating conditions, the average
RMS current that can be handled by the power module
may vary. Derating must notably by applied in the fol-
lowing cases :
» The switching frequency is increased (Fig. 3)
» The average duty-cycle deviates from 50% (Fig. 4)
Reciprocally, the current capability can be increased in
the following cases :
» The DC bus voltage is reduced (Fig. 5)
» Soft-switching is made possible by external compo-
nents and circuit conditions (see related literature)
Additionally, further derating due to the ambient air tem-
perature or other environmental conditions may apply.
I [ARMS]
60
I [ARMS]
40
38
35
30
duty
cycle [-]
25 0
0.2
0.4
0.6
0.8
1
Fig. 4.  Current capability as a function of the average duty-cycle
I [ARMS]
55
200 VDC
45
38
30
400 VDC
600 VDC
800 VDC
fSW
[kHz]
15
20
30
40
50
Fig. 3.  Current capability as a function of the switching frequency
1  The maximum DC bus voltage is defined by the specifications of the
bus capacitors. Therefore, as for any aluminum electrolytic capacitors,
few short-term over-voltages can be tolerated, provided that they in-
volve limited amounts of energy.
2  In cold conditions, the maximum current is limited by the power
semiconductors. Otherwise, the current rating of the module is lim-
ited by the power envelope of the cooler (about 140 W with airflow).
45
20kHz
38
35
30kHz
40kHz
25
50kHz
VDC
[V]
15
200
400
600
800
Fig. 5.  Current capability as a function of the DC-bus voltage
3  The maximum ripple current is defined by the equivalent series re-
sistance (ESR) of the capacitors and relates to Joule losses and lifetime
considerations. Therefore, this value can be temporarily exceeded, pro-
vided that the operating temperature of the capacitors remains low.
4  This indicates that both switches are actively used and that reverse
conduction inside the MOSFET channel is used in order to reduce the
conduction losses.
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