At the 2024 Beijing Auto Show, Bosch Semiconductor and Xinchi Technology jointly displayed a reference design board jointly developed by both sides.
The design board is based on the core G9H central gateway SoC chip and is equipped with Bosch’s highly integrated PMIC CS600, highlighting the new application of the power management chip CS600 in the central gateway SoC system.
This cooperation fully reflects the close cooperation between Bosch and the domestic semiconductor manufacturers represented by Xinchi, and the two sides are committed to meeting the needs of the rapid development of automotive technology.
2024 Beijing Auto Show Bosch senior leaders visited the Xinchi booth, which is a full-scene intelligent car core leader, providing high-performance and high-reliable car gauge chips for central computing + regional control electronic and electrical architecture, covering intelligent cockpit, central gateway and high-performance MCU and other fields.
Xinchi’s G9 series processor is a high-performance automotive specification-level chip designed for the new generation of automotive central gateway, and it is also the first chip to adapt to the open source program of China’s automotive operating system.
The G9 series adopts a dual-core heterogeneous design, including a high-performance Cortex-A55 CPU core and a high-reliability Cortex-R5 core with dual-core lock steps, which can not only carry the rich applications of future gateways, but also meet the requirements of high functional security level and high reliability.
Since the launch of the first product in 2020, the Xichi G9 series has gradually increased the demand for SoC power supply while updating its products, requiring more power tracks, stronger current supply capacity, and a more safe and reliable power supply scheme.
Bosch PMIC CS600 is a customizable high-performance power management chip, as shown in figure 2.
Designed to provide complete power solutions for μ C, SoC chips and peripherals, it is not only rich in power resources (11 tracks), but also equipped with auxiliary units such as GPIO,ADC and SPI to achieve independent and diverse monitoring and protection, and provide products with high functional safety level protection.
At present, the chip has been used in ADAS, central gateway, domain controller and other systems.
CS600 power management chip, after in-depth evaluation by both sides, the core G9H SoC system adopts the reference design of Bosch CS600 power supply scheme.
CS600 replaces the original power network composed of multiple DCDC power chips.
while meeting the requirements of the number of power tracks, current capacity, power timing, system expansion and other requirements, the power supply system of functional safety level ASIL-D is constructed.
, CS600 power supply scheme block diagram, in the power supply solution of G9H SoC system, CS600 outputs a total of 10 power supply tracks, including 4 LDO,4 SMPS and 2 DGD SMPS.
that can be combined to supply power to three parts of G9H SoC, respectively, RTC (clock domain), SAF (security domain) and AP (application domain).
The scheme block diagram is shown in figure 3.
CS600 uses OTP to configure the output voltage and power-on timing of all rails, and completes the setting of ADC sampling, error management, GPIO and other modules.
CS600 not only meets the power consumption of each SoC rail, but also takes into account the power supply of related peripherals, such as OSPI Flash, LPDDR4/4x, eMMC and so on.
The solution also takes into account the design of extended external power supply for SAF domain and AP domain: GPIO2 and GPIO3 are used as external control pins EXT_CTRL0 and EXT_CTRL1 respectively to enable external power supply on time to meet the power requirements of more loads.
Then the external power supply voltage is sampled through the ADC channel to realize the flexible expansion and comprehensive monitoring of the power supply system.
Figure 4 shows the CS600 G9H power solution evaluation board, where the CS600 uses a double-row QFN-96 package and is scaled down to 10x10mm ².
It can be seen from the figure that the layout of CS600 and peripheral circuits is compact, and the area of PCB is reduced compared with the power supply scheme composed of discrete devices.
The CS600 G9H power solution evaluation board and the cooperation between Bosch and Xinchi to develop the reference design have opened up the application of Bosch PMIC CS600 in the SoC power solution of the central gateway and contributed to the promotion of the central gateway products in the market.
Next, the two sides will further deepen their cooperation and continue to provide reliable and complete system power solutions for the central gateway and other in-vehicle SoC.
At the same time, Xinchi has also planned the integration of Bosch core MCU in the new generation of high-performance car gauge IP GTM4 product series, expanding its MCU product line to a wider range of on-board applications.
The two teams jointly indicated that Bosch and Xichi will continue to work together to build a local semiconductor ecological chain and make positive contributions to the vigorous development of China’s automotive industry.
Bosch and Xinchi team took a group photo at the Xinchi booth and returned to the home page of the first electric network.
