An isolation drive chip, also called an isolated gate driver, is a specialized integrated circuit that transfers control signals and supplies drive current to power transistors such as MOSFETs, IGBTs, SiC devices, or GaN HEMTs while maintaining galvanic isolation between the low-voltage control side and the high-voltage power stage.

Isolation is achieved through capacitive, magnetic (coreless transformer), or optical methods, blocking direct current paths and protecting controllers from voltage spikes that can reach several kilovolts.

Texas Instruments – The Capacity Powerhouse

Texas Instruments continues to shape the isolation drive chip landscape through massive U.S. manufacturing expansion. Its newest 300 mm fab (SM1) in Sherman, Texas, began production in December 2025, the first of four planned fabs at the site and part of a multi-year investment covering facilities in Texas and Utah. Analog power productsincluding isolated DC/DC regulators, gate drivers, and related power stagesare among the first devices running there, supporting automotive lighting, battery systems, data centers, and industrial equipment.

TI aims to bring more than 95 percent of its wafer production in-house by 2030, with internal manufacturing already near 90 percent. The company employs tens of thousands globally and has been ramping clean-room capacity and automation to handle rising demand for isolated drivers in motor control, EV inverters, and power conversion. Recent quarterly results show strength in data-center and industrial segments, with the new fabs positioned to deliver consistent supply of isolation solutions through the rest of the decade.

Analog Devices – Isolation Precision Meets AI Power

Analog Devices has long set the standard for high-performance digital isolators and isolated gate drivers through its iCoupler technology. In 2026 the company posted successive record quarters, with third-quarter revenue reaching the first $4 billion mark in its history, driven heavily by data-center and industrial applications. Its Irish operations alone employed nearly 1,900 people and generated over $10 billion in revenue in the latest reported year, reflecting expanded R&D and manufacturing space.

ADI has more than doubled internal capacity compared with pre-pandemic levels and continues adding tools and external wafer sources. Isolated amplifiers, digital isolators, and gate-drive solutions remain core to its portfolio, serving everything from industrial drives to next-generation AI power delivery. The 2026 acquisition of Empower Semiconductor further strengthens its grid-to-core power offerings, reinforcing the role of isolation chips in high-density, high-efficiency systems.

Infineon Technologies – Driving the Electric Transition

Infineon Technologies, with roughly 57,000 employees worldwide and fiscal 2025 revenue near €14.7 billion, remains a dominant force in isolated gate drivers under the EiceDRIVER brand. In early 2026 the company launched the 1ED301xMC12I family of opto-emulator input isolated drivers delivering up to 6.5 A output current, high CMTI exceeding 300 kV/µs, and propagation delays around 40 ns. Later in June 2026 it introduced the 1EDI304xAS series for BEV traction inverters, featuring multi-level slew-rate control that can cut inverter losses by significant margins over drive cycles and supporting both IGBT and SiC MOSFETs.

These devices target power modules, parallel switches, and systems above 300 kW. Infineon’s portfolio covers single- and dual-channel isolated drivers for solar inverters, EV chargers, industrial drives, and traction applications, combining reinforced isolation, active Miller clamps, and short-circuit protection. Continuous product releases keep the company at the center of the shift to wide-bandgap power electronics.

STMicroelectronics – Robust Isolation for SiC and IGBT

STMicroelectronics expanded its STGAP3S family of galvanically isolated gate drivers in 2026 with new 3 A variants optimized for both SiC MOSFETs and IGBTs. The drivers operate on rails up to 1200 V, deliver reinforced isolation against transients up to 9.6 kV, and achieve CMTI of 200 V/ns. Available in source/sink currents of 3 A, 6 A, and 10 A, the series integrates Miller clamps, desaturation protection, and tunable soft turn-off in SO16W packages.

Evaluation boards and design tools accompany the products to speed development of PFC circuits, DC/DC converters, inverters, and EV-related power stages. ST’s isolation technology protects control circuitry while enabling higher switching frequencies and denser layouts. These solutions appear in industrial motor drives, energy storage, onboard chargers, and home appliances, underscoring ST’s role in making high-voltage isolation more accessible and reliable.

ROHM Semiconductor – GaN-Ready Isolation Specialists

ROHM Semiconductor advanced its isolation portfolio in 2025 with the BM6GD11BFJ-LB, an isolated gate driver purpose-built for 600 V-class GaN HEMTs. The device supports switching frequencies up to 2 MHz, offers CMTI of 150 V/ns (1.5 times earlier generations), and reduces minimum pulse width to 65 ns. Isolation rating reaches 2500 Vrms while gate-drive voltage stays between 4.5 V and 6.0 V, matching ROHM’s EcoGaN devices and other high-voltage GaN switches.

Low output-side consumption (0.5 mA maximum) helps cut standby power. Applications range from server power supplies and motors to white goods, AC adapters, and air-conditioning systems. By combining on-chip isolation with high-speed capability, ROHM enables smaller peripheral components and higher efficiency in high-current designs, strengthening its position in the growing GaN ecosystem.

onsemi – Powering Data Centers and Automotive

onsemi continues to supply galvanically isolated gate drivers for IGBT and MOSFET stages across industrial and automotive platforms. Recent activity highlights partnerships around high-speed GaN evaluation boards that achieve 1+ MHz operation and 200 V/ns CMTI in compact layouts. The company’s broader power portfolio supports AI data-center growth, with management noting that related revenue is expected to more than double in 2026. Utilization rates have risen notably, improving operational leverage.

Isolated drivers from onsemi appear in AC-DC adapters, PV inverters, energy storage, and bridgeless topologies, helping reduce system size and component count. With a strong footprint in both silicon and wide-bandgap complementary products, onsemi remains a practical choice for designers balancing performance, cost, and supply stability.

Skyworks Solutions – CMOS Isolation Heritage

Skyworks Solutions carries forward a rich isolation portfolio that includes CMOS digital isolators, isolated gate drivers, isolated amplifiers, and industrial I/O devices supporting isolation voltages up to 5 kV. The technology emphasizes low electromagnetic emissions, high noise immunity, and operation across industrial temperature ranges.

Product families such as the Si86xx series offer multi-channel isolation in compact packages with data rates reaching 150 Mbps and latencies under 10 ns. These components serve industrial automation, medical equipment, and power-system interfaces where reliable signal isolation is critical. Skyworks’ isolation expertise continues to support designs that require both high-speed data transfer and robust galvanic separation.

Broadcom Inc. – High-Performance Isolation Expertise

Broadcom maintains a strong presence in isolation solutions through optocoupler-compatible and digital isolator technologies used in power and industrial applications. Its devices frequently appear alongside gate-driver requirements for motor control, power supplies, and communication interfaces.

The company’s broad semiconductor portfolio allows isolation products to be paired with other high-speed and high-reliability components. Designers rely on Broadcom isolation chips for consistent performance in environments demanding high common-mode transient immunity and long-term reliability. Ongoing development keeps these solutions relevant for next-generation industrial and energy systems.

Shanghai Chipanalog Microelectronics – Domestic Isolation Innovator

Shanghai Chipanalog Microelectronics has built a focused portfolio of digital isolators, isolated interfaces, isolated amplifiers, isolated power modules, and isolated drivers since its founding. Product families cover reinforced digital isolators, isolated RS-485 and CAN transceivers, single- and dual-channel isolated drivers compatible with optocoupler footprints, and isolated DC-DC converters delivering 0.5 W to 3 W. These devices target industrial automation, power metering, and automotive-adjacent applications. Chipanalog’s emphasis on high-quality analog isolation helps fill domestic supply needs while meeting international performance expectations for CMTI and isolation voltage. The company’s growing catalog supports designers seeking locally available, high-reliability isolation solutions.

3PEAK – Signal-Chain Isolation Strength

3PEAK has expanded from signal-chain and analog front-end products into isolation, offering digital isolators with reinforced isolation up to 8000 V, CMTI around 150 V/ns, and long-term reliability targets measured in decades. Its isolation devices complement gate drivers, motor drivers, and interface products used in industrial and automotive systems. The company maintains R&D and support teams across multiple Chinese cities and international locations. 3PEAK’s isolation offerings help designers achieve high noise immunity and compact layouts in motor control, power management, and communication interfaces. Continuous product expansion positions it as a rising contributor to the isolation drive chip ecosystem.

GLW – Specialized Isolation Contributor

GLW participates in the isolation and driver segment with products aimed at industrial and power-conversion needs. The company supplies isolation-related chips that support gate-drive and signal-isolation functions in motor drives and power supplies. Its solutions emphasize practical performance for mid-range applications where reliable galvanic separation is required. GLW’s presence adds diversity to the supply base for designers working on cost-sensitive yet robust isolation architectures.

Rongmei Semiconductor (Shanghai) – Emerging Isolation Player

Rongmei Semiconductor focuses on isolation and related analog chips for industrial and power applications. Its product lineup includes isolation devices suited to gate-drive and signal-isolation tasks. The company contributes to the expanding Chinese ecosystem of isolation solutions, supporting local manufacturing of motor controllers, power converters, and interface circuits. Rongmei’s devices help meet demand for domestically produced isolation components with competitive performance characteristics.

Novosense Microelectronics – Automotive Isolation Leader

Novosense has developed multiple generations of isolation drivers tailored for electric-vehicle and industrial power stages. Its second-generation ISO Smart Drivers deliver peak currents up to 10 A and support both IGBT and SiC modules for systems in the 11 kW to multi-hundred-kilowatt range. Isolation drivers are paired with current-sensing and sampling solutions to form complete power-stage packages. Novosense is among the first Chinese suppliers offering automotive-qualified isolation and driver chips for 800 V platforms and parallel SiC configurations. These products address traction inverters, onboard chargers, and electronic control units, accelerating domestic capability in high-reliability isolation technology.

Microchip Technology – Reliable Isolation for Embedded Systems

Microchip Technology supplies isolation and gate-driver solutions that integrate smoothly with its microcontrollers and analog portfolios. Its isolated drivers and digital isolators serve industrial motor control, power supplies, and automotive subsystems. Designers value the combination of isolation performance with supporting development tools and long product-lifecycle commitments. Microchip’s isolation offerings help simplify designs that require both control intelligence and galvanic separation, supporting applications from factory automation to energy-management systems.

Texas Instruments (again highlighted for breadth)

Beyond its fab expansion, Texas Instruments maintains one of the industry’s widest catalogs of isolated gate drivers and digital isolators. These devices appear in countless reference designs for industrial drives, renewable-energy inverters, and automotive power modules. Continuous process and packaging improvements ensure the parts keep pace with SiC and GaN switching speeds while delivering the volume and longevity that large-scale manufacturers require. TI’s dual role as both technology leader and high-volume producer continues to anchor the isolation drive chip market.