GUC Announces Tape-Out of the World's First HBM4 IP on TSMC N3P

Hsinchu, Taiwan – Apr. 2nd, 2025 – Global Unichip Corp. (GUC), the Advanced ASIC Leader, announced today that it has successfully taped-out the world’s first HBM4 controller and PHY IP. This test chip was implemented using TSMC’s cutting-edge N3P process technology and CoWoS®-R advanced packaging technology.

The HBM4 IP supports data rates of up to 12Gbps under all operating conditions. By leveraging a proprietary interposer layout, GUC has optimized signal integrity (SI) and power integrity (PI) to achieve these high speeds for all types of CoWoS technology. Comparing with HBM3, GUC’s HBM4 PHY delivers 2.5x bandwidth while improving 1.5x power efficiency and 2x area efficiency. In line with previous GUC HBM, GLink, and UCIe IPs, this HBM4 IP integrates proteanTecs’ interconnect monitoring solution to provide high visibility for testing and characterizing the PHY while improving in-field performance and reliability for end products. 

This milestone further strengthens GUC’s comprehensive portfolio of advanced IPs, including its 32Gbps UCIe-A and GLink-3D IPs. Together, these offerings deliver a complete 2.5D and 3D total solution, empowering customers to address the most demanding applications in AI, high-performance computing (HPC), and beyond. 
“We are proud to be the first company to have taped out a 12Gbps HBM4 controller and PHY IP,” said Sean Tai, President of GUC. “Our commitment to delivering best-in-class 2.5D/3D IPs and services remains strong. By integrating HBM4, UCIe-A, and GLink-3D IPs, we offer a comprehensive solution that meets the evolving needs of the semiconductor industry.”

GUC HBM4 IP Highlight

• Signed off at 12Gbps in full range of corners and operating conditions 
• High bus utilization rate: ~90% at random read/write access
• Proprietary interposer layout to achieve best SI/PI for all types of CoWoS technology
• Embedded per-lane, in-mission mode I/O and Clock performance and health monitoring by proteanTec

To learn more about GUC’s UCIe IP portfolio and total solutions using TSMC’s CoWoS® and SoIC® technologies, please contact GUC sales representative via email (https://www.guc-asic.com/en/about-offices.php) 

About GUC (Global Unichip Corp.)

GLOBAL UNICHIP CORP. (GUC) is the Advanced ASIC Leader who provides the semiconductor industry with leading IC implementation and SoC manufacturing services, using advanced process and packaging technology. Based in Hsin-Chu, Taiwan, GUC has developed a global reputation with a presence in China, Europe, Japan, Korea, North America, and Vietnam. GUC is publicly traded on the Taiwan Stock Exchange under the symbol 3443. For more information, please visit our website: www.guc-asic.com