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Industrial

Low Voltage Motor Drives

Wolfspeed silicon carbide meets efficiency standards while enabling smaller, lighter, more efficient industrial low voltage motor drives.

Wolfspeed silicon carbide enables embedded motor drives

Electric motors, including industrial low voltage drives, account for more than 50% of all electricity used in industry globally. Traditionally, industrial low voltage motor drives were designed with the motor and drive in separate housings and connected by a long cable, resulting in poor motor reliability or increased cost from needing output filters, wasted power and lower overall system efficiency.  ​

Today silicon carbide is enabling a shift to embedded motor drives where the drive and motor are combined into one smaller unit. Combining motors and drives can reduce overall system cost by 20-40% and improve drive efficiency by up to 2.6% so motor manufacturers can achieve IE3 and IE4 efficiency standards.


Reach IE4 efficiency standards with Wolfspeed 650 V MOSFETS

Achieve IE4 efficiency standards with Wolfspeed’s 650 V MOSFETs. For example, in an 11 kW, 8 kHz system upgrading to a semi-bridgeless Totem Pole-PFC and replacing IGBTs in the inverter with drop-in silicon carbide MOSFETS yields:​

  • 2% efficiency improvement​
  • 220 W reduction in losses​
  • Meets IE4 efficiency standards.

Redesigning the PFC using a bridgeless totem pole topology and upgrading the inverter with silicon carbide MOSFETs improves efficiency even more to 2.4% while maintaining IE4 standards. ​

When compared to high-speed, soft-switched IGBTs, Wolfspeed 650 V MOSFETs offer drastically lower conduction losses and almost no switching losses, significantly improving the performance of embedded industrial motor drives. ​


Reduce motor drive size while boosting efficiency at higher temperatures with WolfPACK™

Six-pack Wolfspeed WolfPACK™ power modules enable superior performance and system efficiency. When compared to leading IGBT solutions in a 25 kW inverter system, the WolfPACK™ achieves 1.1% higher efficiency with a 77% smaller heat sink (0.31 L vs 1.37 L). ​

Conversely, the WolfPACK can run at higher loads with smaller heat sinks, allowing designers to design embedded drive systems that are smaller and lighter and require up to 77% smaller heat sinks. Even at a higher 16 kHz switching frequency with the same heat sink,  silicon carbide remains thermally stable and outperforms silicon IGBTs.

SiC MOSFET remains cooler than all the Si IGBTs, even with 77% smaller heat sink​

25 kW inverter, Fsw = 8 kHz, 77% reduced SiC MOSFET Heat Sink: 0.31L (1.6°C/W) vs. 1.37 L (0.73°C/W)

The graphs above demonstrate an improvement in efficiency with the silicon carbide six-pack WolfPACK modules vs IGBT modules in a 25 kW inverter with an 0.8 L heat sink. As the power level increases, the junction temperature of 50 A and 100 A rated silicon IGBTs increases, causing them to fail, while Wolfspeed 32 A silicon carbide MOSFET remains stable and well below the failure threshold.​

SiC enables superior performance even at higher switching frequencies

25 kW inverter, Fsw = 16 kHz, Larger Si IGBT Heat Sink: 1.37 L (0.7°C/W) , smaller SiC Heat Sink 0.8 L (0.99°C/W)

At 16kHz switching frequency, we see 100 A and 50 A rated silicon IGBTs fail thermally beyond 10 kW and 15 kW respectively, despite using a 41% larger heat sink size than 32 A Wolfspeed silicon carbide MOSFETs. 


Model silicon carbide efficiency with SpeedFit™​

Maximize industrial low voltage motor drive efficiency when you simulate with SpeedFit Design Simulator, the first step to selecting the right devices for your design. Our online simulation tool offers an easy-to-use interface for evaluating Wolfspeed’s silicon carbide MOSFETs, diodes and power modules many power topologies. Start simulating today and harness the power of Wolfspeed silicon carbide in your industrial motor drives.

Simulate Now​

Wolfspeed Silicon Carbide Components for Industrial Low Voltage Motor Drives​

Wolfspeed’s products represent the culmination of years of experience and expertise, where quality meets innovation to help bring your design forward. ​

Discrete Silicon Carbide MOSFETs

Discrete Silicon Carbide MOSFETs

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Discrete Silicon Carbide MOSFETs

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Data Sheet
CAD Model
Blocking Voltage
RDS(ON) at 25°C
Generation
Current Rating
Gate Charge Total
Output Capacitance
Total Power Dissipation (PTOT)
Maximum Junction Temperature
Package
Recommended For New Design?
Qualification
C3M0075120K
1200 V
75 mΩ
Gen 3
32 A
51 nC
58 pF
113.6 W
150 °C
TO-247-4
Yes
Industrial
1200 V
75 mΩ
Gen 3
30 A
51 nC
58 pF
113.6 W
150 °C
TO-263-7
Yes
Industrial
1200 V
40 mΩ
Gen 3
64 A
61 nC
94 pF
272 W
150 °C
TO-263-7
Yes
Industrial
650 V
15 mΩ
Gen 3
120 A
188 nC
289 pF
416 W
175 °C
TO-247-4
Yes
Industrial
650 V
45 mΩ
Gen 3
47 A
61 nC
101 pF
147 W
150 °C
TO-263-7
Yes
Industrial
650 V
60 mΩ
Gen 3
36 A
46 nC
80 pF
136 W
175 °C
TO-263-7
Yes
Industrial
1200 V
32 mΩ
Gen 3
68 A
111 nC
133 pF
277 W
150 °C
TO-263-7
Yes
Industrial

Discrete Silicon Carbide Schottky Diodes

Discrete Silicon Carbide Schottky Diodes

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Discrete Silicon Carbide Schottky Diodes

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Data Sheet
CAD Model
Blocking Voltage
Current Rating
Generation
Forward Voltage(VF(type))
Maximum Continuous Current (IF)
Total Capacitive Charge (QC (typ))
Total Power Dissipation (PTOT)
Package
Qualification
Recommended For New Design?
1200 V
10 A
Gen 4
1.5 V
10 A
52 nC per leg
170 W
TO-252-2
Industrial
Yes
650 V
16 A
Gen 3
1.5 V
16 A
44 nC
150 W
TO-220-2
Industrial
Yes
650 V
16 A
Gen 6
1.27 V
16 A
29 nC
100 W
TO-247-3
Industrial
Yes

Silicon Carbide Power Modules

Silicon Carbide Power Modules

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Silicon Carbide Power Modules

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FM3
Six-pack (three-phase)
1200 V
30 A
32 mΩ
Gen 3 MOS
150 °C
62.8 mm x 33.8 mm
Yes
Industrial

Reference Designs

Reference Designs

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Reference Designs

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25kW FM3 Three-Phase Inverter
New
Three-Phase, 2-Level
Available for Purchase
FM3
Wolfspeed
CRD25DA12N-FMC
Three-Phase, 2-Level
Paper Design Only
TO-247-4
Wolfspeed
CRD-22AD12N

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