# TSMC and Japanese Auto Suppliers Scale 28nm BCD Power Chip Production

*Automotive suppliers integrate high-voltage power management silicon into domestic 300mm foundry lines to secure electrified vehicle supply chains.*

**Published:** August 31, 2026  
**By:** Kenji Sato  
**Section:** Semiconductors & AI Hardware — Japan  
**Format:** Breaking  
**Confidence:** high  
**Source:** https://eastasiabrief.com/semiconductors/tsmc-japanese-auto-suppliers-scale-28nm-bcd-power-chip-134  
**Publisher:** East Asia Brief (https://eastasiabrief.com/)

---

## What to know

- Japan Advanced Semiconductor Manufacturing confirmed on Feb.
- The foundry joint venture, majority-owned by Taiwan Semiconductor Manufacturing Co.
- Japan Advanced Semiconductor Manufacturing, known as JASM, operates its first fabrication facility with equity investments from Sony Semiconductor Solutions Corp.

![A technician in a cleanroom suit holds a semiconductor wafer beside automated processing equipment during manufacturing operations. (AI-generated image)](https://eastasiabrief.com/media/2026-08-30-73fb7dbabef5.webp)
*A technician in a cleanroom suit holds a semiconductor wafer beside automated processing equipment during manufacturing operations. (AI-generated image)*

Japan Advanced Semiconductor Manufacturing confirmed on Feb. 28, 2026, that it has integrated advanced power management processes into its 300-millimeter specialty wafer operations in Kumamoto Prefecture.

The foundry joint venture, majority-owned by Taiwan Semiconductor Manufacturing Co., manufactures specialty logic and power semiconductors on 28-nanometer and 22-nanometer process nodes for automotive tier-1 suppliers and industrial clients.

*The rest of this briefing is for members. Creating an account is free. [Continue reading](https://eastasiabrief.com/semiconductors/tsmc-japanese-auto-suppliers-scale-28nm-bcd-power-chip-134).*

---

Cite as: East Asia Brief, "TSMC and Japanese Auto Suppliers Scale 28nm BCD Power Chip Production," August 31, 2026. https://eastasiabrief.com/semiconductors/tsmc-japanese-auto-suppliers-scale-28nm-bcd-power-chip-134