Which Companies Lead in FET / MOSFET Technology？

1. International leading manufacturers

1.1 Infineon (Germany)

1. Low‑&‑medium‑voltage：OptiMOS 5/6 SGT shield‑gate MOSFET, widely used for server power, automotive BMS, battery protection boards. Low \(R_{DS(on)}\), excellent thermal performance and robustness.
2. High‑voltage silicon：CoolMOS super‑junction MOS, industry benchmark for 600‑1700V AC‑DC power supplies, LLC, PFC circuits.
3. Wide‑bandgap：CoolSiC trench‑gate SiC MOSFET, mass‑produced for new‑energy‑vehicle main inverter, on‑board charger, solar inverter.
4. Strength：Complete AEC‑Q101 automotive qualification, huge patent portfolio for trench, super‑junction and SiC cell structures, mature 12‑inch wafer mass production.

1.2 onsemi (United States)

1. Silicon MOS：EliteMOS super‑junction series, DrMOS integrated power stage for CPU/server power supply. Good balance of efficiency and cost.
2. SiC MOS：EliteSiC 3rd‑generation product, covers 650V‑1200V planar / trench solutions. Widely adopted for EV on‑board charger and photovoltaic inverter.
3. Application：Automotive electronics, industrial power, energy storage.

1.3 STMicroelectronics (Europe)

1. Full‑range discrete MOS for automotive and industrial control. Mature trench‑gate and super‑junction process.
2. Advantage：strong automotive‑grade certification capability, large volume for vehicle BMS, on‑board charger, motor drive power boards36氪.

1.4 Nexperia (Netherlands, formerly NXP standard‑product division)

1. World‑class supplier for small‑signal and medium‑current power MOSFETs.
2. Advantage：stable consistency, high yield, huge shipment for consumer electronics, battery‑protection boards, adapters and household appliances.

1.5 Japanese vendors: ROHM, Toshiba, Renesas

1. Toshiba: U‑MOS advanced process, well‑known for high‑frequency low‑voltage MOS for adapters and consumer power supplies.
2. ROHM: wide‑SOA silicon MOS and mature SiC MOS products, focus on automotive and industrial high‑reliability scenarios.
3. Renesas: split‑gate MOS technology, oriented to industrial control and new‑energy equipment.

1.6 GaN‑FET specialized manufacturers

1. Navitas Semiconductor: Cascode‑mode GaN FET, mainstream solution for PD fast‑charging adapters, high‑volume consumer‑market shipment.
2. Power Integrations (PI): highly‑integrated GaN power IC for small‑size switching power supply.

2. Leading domestic Chinese manufacturers

2.1 CR Micro (China Resources Microelectronics)

1. IDM manufacturer with self‑owned 8‑inch /12‑inch fabs. Covers full voltage range 12V‑1700V.
2. Core product: SGT shield‑gate low‑voltage MOS (battery‑protection board, power‑bank), super‑junction high‑voltage MOS for AC‑DC power supply. Has passed automotive‑grade qualification and supplies domestic new‑energy‑vehicle customers36氪.

2.2 Silan Micro (Hangzhou Silan)

1. Domestic IDM benchmark. SGT‑MOS and SVG low‑gate‑charge MOS are popular for fast‑charging adapters, industrial and server power supplies.
2. Layout：super‑junction MOS, automotive‑grade discrete devices, ongoing SiC wafer manufacturing project.

2.3 Oriental Semi (East Micro, Dongwei Bandao)

1. Fabless design house, domestic high‑voltage super‑junction MOS leader.
2. Main applications: server platinum‑efficiency power supply, industrial LLC/PFC power, photovoltaic energy‑storage. Its performance can compete against international super‑junction chips. Also develops SiC MOS product lines苏州东微半….

2.4 NCE New Chip Energy (NCE Power)

1. Representative fabless MOS vendor. Covers low‑voltage battery‑protection MOS, medium‑&‑high‑voltage super‑junction MOS. Widely used in power banks, electric‑tool protection boards, adapters, charging piles.
2. Strength: fast sample turnaround, cost‑effective, widely adopted in mass‑production consumer hardware.

2.5 Wingtech (Nexperia China business)

2.6 BYD Semiconductor

2.7 Innoscience

3. Brief selection guide for hardware design

4. Summary