Power management reference designs for digital cockpits
Rohm has developed reference designs for digital cockpits using chip from Telechips and its power management ICs.
The digital cockpit reference cockpit designs use the Dolphin3 and Dolphin5 from Telechips in Korea with the designs scheduled for mass production in 2025.
Rohm and Telechips have been working together since 2021 from the early stages of the SoC chip design, integrating the power supply into the Telechips power supply reference designs. These support diverse model development by combining sub-PMICs and DrMOS with the main PMIC for the SoCs.
Digital cockpits are equipped with multiple displays, such as instrument clusters and infotainment systems, with each automotive application becoming increasingly multifunctional. As the processing power required for automotive SoCs increases, power ICs like PMICs must be able to support high currents while maintaining high efficiency. At the same time, manufacturers require flexible solutions that can accommodate different vehicle types and model variations with minimal circuit modifications. The Rohm SoC PMICs include One Time Programmable ROM that allows for custom output voltage settings and sequence control, enabling compatibility with large currents when paired with a sub-PMIC or DrMOS.
For infotainment applications, the Dolphin3 application processor (AP) power reference design includes the BD96801Qxx-C main PMIC for SoCs. Similarly, the Dolphin5 AP power reference design developed for next-generation digital cockpits combines the BD96805Qxx-C and BD96811Fxx-C main PMICs for SoC with the BD96806Qxx-C sub-PMIC for SoC, improving overall system efficiency and reliability.
Dolphin3 supports up to four displays and eight in-vehicle cameras, while Dolphin5 enables up to five displays and eight cameras, making highly suited as SoCs for increasingly multifunctional next-generation cockpits.
“Telechips offers reference designs and core technologies centreed around automotive SoCs for next-generation ADAS and cockpit applications,” said Moonsoo Kim, Senior Vice President and Head of System Semiconductor R&D Centre at Telechips.
“We are pleased to have developed a power reference design that supports the advanced features and larger displays found in next-generation cockpits by utilizing power solutions from ROHM, a global semiconductor manufacturer. Leveraging ROHM’s power supply solutions allows these reference designs to achieve advanced functionality while maintaining low power consumption. ROHM power solutions are highly scalable, so we look forward to future model expansions and continued collaboration.”
“We are pleased that our power reference designs have been adopted by Telechips, a company with a strong track record in automotive SoCs. As ADAS continues to evolve and cockpits become more multifunctional, power supply ICs must handle larger currents while minimizing current consumption. Our SoC PMICs meet the high current demands of next-generation cockpits by adding a DrMOS or sub-PMIC in the stage after the main PMIC. This setup achieves high efficiency operation that contributes to lower power consumption. Going forward, ROHM will continue our partnership with Telechips to deepen our understanding of next-generation cockpits and ADAS, driving further evolution in the automotive sector through rapid product development,” said Sumihiro Takashima, Corporate Officer and Director of the LSI Business Unit at Rohm.
The Power Supply Reference Design [REF67003-EVK-001] equipped with Dolphin3
Reference Board is at www.rohm.com/reference-designs/ref67003 and with the Dolphin5 SoC at www.rohm.com/reference-designs/ref67005
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