The rise of battery manufacturing in ASEAN: a new battlefield for power semiconductors and BMS chips

Event: ASEAN Battery Technology Conference Shifts from Policy to Engineering

In July 2026, the 4th ASEAN Battery Technology Conference (ABTC 2026) will be held in Sepang, Malaysia, with the theme "Industrializing Battery Technology: Strengthening the Global Competitiveness of the ASEAN Battery Value Chain." Unlike previous years that focused on policy frameworks, this conference will center on battery manufacturing engineering—including cell manufacturing, thermal runaway mitigation, and localized chemical supply chains. This marks a key step in ASEAN’s transition from raw material export to integrated battery manufacturing.

Why the Semiconductor Industry Must Pay Attention

The scaling of battery manufacturing and energy storage systems is highly dependent on semiconductor technology. Modern battery management systems (BMS) require high-performance microcontrollers (MCUs), precision analog front-ends (AFEs), isolated gate drivers, power MOSFETs/IGBTs, and advanced power management ICs. As ASEAN advances localized battery manufacturing, regional demand for these semiconductor components will rise in tandem.

The reference material explicitly states: "The technical collaboration between Ampace and Infineon Technologies introduces advanced semiconductor control architectures into regional dialogue. Modern BMS must process large amounts of health status data in real time, calculate internal resistance, track local temperature rises, and dynamically balance cell strings. Using precise silicon and firmware architectures, these systems can safely push cells to their operating limits without sacrificing safety margins." This directly reveals the core role of semiconductors in battery industrialization.

Industry Chain Analysis: Which Semiconductor Segments Benefit?

Upstream: Materials and Equipment - Silicon Wafers and Substrates: BMS ICs often use analog processes (such as BCD process), requiring stable demand for 8-inch/12-inch wafers. If ASEAN establishes local packaging and testing capabilities, it will drive growth in wafer imports. - Photoresists and Specialty Gases: The manufacturing of power semiconductors and MCUs requires materials such as photoresists and etching gases. However, Southeast Asia currently lacks high-end photoresist production capacity, and in the short term relies on supply from Japan and South Korea.### Midstream: Chip Design and Manufacturing - BMS Analog Front-End (AFE) Chip: High-precision voltage/current sensing and battery balancing functions. Typical suppliers include ADI (Analog Devices), TI (Texas Instruments), Maxim (now part of ADI), as well as Renesas, Infineon, etc. ASEAN battery projects may drive these companies to establish local application centers or joint development efforts. - Microcontroller (MCU): BMS main control requires high-performance ARM Cortex-M series MCUs. NXP, Renesas, and STMicroelectronics (ST) are the main players. The conference theme "Industrialization" implies higher requirements for reliability and lifespan, with automotive-grade MCU demand being prominent. - Power Semiconductors: Battery charge/discharge conversion, inverters, and DC/DC converters extensively use MOSFETs, IGBTs, and SiC devices. Infineon, as a global leader in power semiconductors, has preemptively positioned itself in the Southeast Asian energy storage market through its partnership with Ampace. Additionally, onsemi, Mitsubishi Electric, Fuji Electric, etc., will also benefit. - Isolation Devices: High-voltage BMS requires isolated communication and isolated drivers, such as digital isolators and isolated ADCs. Major suppliers include TI, ADI, Silicon Labs, etc.

Downstream: Packaging, Testing, and Integration - Packaging and Testing: Southeast Asia already hosts global packaging and testing giants like ASE and Amkor, which can handle the packaging (e.g., QFN, BGA) and testing of battery management chips. ASE has a large production base in Penang, Malaysia, offering advanced packaging services directly for BMS chips. - Battery Module Assembly: Involves PCB assembly, sensor integration, etc., but has a relatively lower semiconductor content.

Changes in the Competitive Landscape: Who is Laying Out in Southeast Asia?

• Infineon: Through its cooperation with Ampace, it has taken the lead in introducing advanced semiconductor control architectures into the ASEAN battery ecosystem. Infineon already has a wafer fab (200mm SiC factory) in Kulim, Malaysia, which can support BMS chip demand.
• STMicroelectronics (ST): Has packaging and testing facilities in Southeast Asia (Thailand, Malaysia). Its combination of BMS ICs and MOSFETs can support battery modules.
• NXP: Has a packaging and testing base in Thailand, and its MCU product line covers BMS and on-board chargers.
• Texas Instruments (TI): Has a packaging and testing facility in the Philippines. Its BQ series BMS AFE chips are globally leading. ASEAN battery manufacturing may accelerate TI's increase in local analog chip production capacity.
• Renesas Electronics: Acquired BMS-related IP through the purchase of Dialog (an Apple supplier) and is expected to expand design support in Southeast Asia.It is worth noting that Chinese semiconductor manufacturers (such as GigaDevice, Sino Wealth Electronics, and BYD Semiconductor) are also growing rapidly in the battery management chip field, but due to geopolitical influences, entering the ASEAN supply chain may face barriers.

Regional Impact: Accelerated Formation of Southeast Asia's Semiconductor Ecosystem

• Malaysia: As a global hub for semiconductor packaging and testing, Penang and Kedah already have well-established infrastructure. Battery manufacturing will drive demand for power semiconductors and analog chips. It is expected that Malaysia will attract more BMS chip design centers and packaging/testing production lines. NanoMalaysia Berhad, as the conference organizer, is promoting industry-academia collaboration and may facilitate joint laboratories similar to "battery + semiconductor."
• Thailand: With mature automotive electronics and PCB industries, it can take on the assembly of battery management system modules. The Thai government has already introduced the EV3.5 policy to incentivize localized production of power batteries.
• Indonesia: Rich in nickel ore resources but has a weak semiconductor foundation. Battery manufacturing may initially drive back-end testing and module integration, and in the long term could attract some analog wafer foundry investments (e.g., has Taiwan's Vanguard International Semiconductor set up a factory in Indonesia? No clear reports yet).
• Singapore: As an R&D and headquarters hub, it can attract high-value-added segments such as BMS chip design, software development, and system integration. The collaboration between Green Tenaga and Go Rental Singapore mentioned in the references exemplifies the software-level investment in smart energy storage.

Investment Perspective: Long-Term Value and Risks

• Market Size: According to TrendForce data, the global BMS chip market in 2025 is approximately USD 5 billion, with automotive BMS accounting for 60% and energy storage BMS for 15%. If ASEAN battery manufacturing achieves 100 GWh capacity by 2030 (referencing the ASEAN Energy Transition Plan), the corresponding BMS chip market could reach USD 500 million to USD 1 billion. Adding power semiconductors (approximately USD 10 per kWh), the total semiconductor incremental value is about USD 5 billion.
• Investment Direction: Focus on semiconductor manufacturers with packaging/testing production lines in Southeast Asia (ST, TI, NXP, Infineon); leading BMS AFE companies (ADI, TI); and companies that can provide one-stop BMS solutions.
• Risks: Low yield and high costs in the early stages of battery manufacturing may suppress chip procurement scale; localization policies may require chips to be produced in ASEAN, but advanced analog chip wafer manufacturing is difficult to localize in the short term.

Long-Term Outlook: The Next 3–10 Years- 3 years (2026-2029): ASEAN will complete the construction of the first batch of GWh-level battery factories, mainly adopting LFP (lithium iron phosphate) chemistry, with extremely high requirements for temperature management and safety, driving demand for highly reliable BMS chips. Infineon and TI will dominate the BMS main control and power device markets. - 5 years (2029-2031): The battery recycling circular economy will launch, requiring dedicated IDM (Intelligent Battery Management Chips) to track usage history and health status. Standardized battery pack structures (e.g., CTP, CTC) will drive higher chip integration. - 10 years (2036): ASEAN may become the third pole of global battery manufacturing (after China and Europe), by which time the semiconductor supply chain will be deeply localized: analog wafer foundries (e.g., TSMC, Vanguard International Semiconductor) may set up small 8-inch fabs in Malaysia, and packaging and testing capacity will expand threefold.

Conclusion

ASEAN's shift from battery raw material exports to industrial manufacturing opens new structural growth opportunities for the semiconductor industry. Power semiconductors, analog front-end chips, and MCUs are direct beneficiaries, with European and American manufacturers such as Infineon and TI leveraging first-mover advantages to secure favorable positions. Meanwhile, the Southeast Asian packaging and testing ecosystem will be further strengthened, with Malaysia and Thailand consolidating their positions as nodes in the global semiconductor supply chain. For investors, attention should be given to companies with capacity expansion plans in ASEAN and a high proportion of revenue from battery management chips.

(This article is based on CleanTechnica reports and publicly available industry information and does not constitute investment advice.)