Powertrain

What is the difference between SiC and IGBT inverters in Chinese EVs?

Q: What is the difference between SiC and IGBT inverters in Chinese EVs?

Silicon Carbide (SiC) inverters are ~5–8% more efficient than legacy IGBT inverters, enabling both faster charging (higher voltage bus) and 5–10% more real-world range. Chinese premium EVs (Zeekr, NIO, Xpeng 800V) use SiC; mainstream 400V cars still use IGBT.

Updated 2026-05-186 min read

Inverter technology is one of the biggest determinants of EV efficiency. Here's why SiC matters.

The physics

SiC MOSFETs switch faster and dissipate less heat than IGBTs at high voltage (>600V).

This enables higher-voltage architectures (800V vs 400V) with practical thermal management.

Chinese EVs using SiC

Zeekr 001, 7X, 009 (all 800V).

Xpeng G6, G9, P7+ (SEPA 2.0, 800V).

Xiaomi SU7, YU7 (Hyper Engine V6s+, 871V).

BYD e-Platform 3.0 top trims.

IGBT still dominant

Most sub-€35k Chinese EVs (BYD Atto 3/Dolphin, MG4, Leapmotor C10) use IGBT to save cost.

Real-world difference: ~30 km range on an equivalent-battery car; ~10 min faster DC charge on 800V.

Key takeaways

01SiC = premium/800V; IGBT = mainstream/400V.
02SiC delivers ~5–8% efficiency uplift.
03SiC enables 800V charging speeds.

Sourcing parts or vehicles related to this?

ChinaEV.Autos connects buyers with 2,300+ verified Chinese suppliers. Get matched in minutes.

Browse parts catalog Talk to sourcing team

The physics

Chinese EVs using SiC

IGBT still dominant

Sourcing parts or vehicles related to this?

Keep reading

What is the difference between 400V and 800V EV architecture?

What is BYD DM-i and how does it differ from a normal hybrid?

Which Chinese EV has the best self-driving or driver-assist system?

What is BYD e-Platform 3.0 and what makes it different?