Maxim Integrated Products has announced that its single-chip, ASIL D-rated battery monitoring IC is being integrated into the new Nissan LEAF, the next evolution of its zero-emission electric vehicle. The battery monitoring IC meets the highest safety standards, supporting ISO 26262 and ASIL D requirements (also applicable for ASIL C). Its differential universal asynchronous receiver/transmitter (UART) using capacitive isolation reduces BOM costs and failure in time (FIT) rates. The flexible UART enables robust communications in noisy environments.
Using Maxim’s proprietary daisy-chain architecture and successive-approximation-register (SAR) ADC, the battery monitoring IC captures fast, accurate voltage measurements and delivers high electromagnetic capability (EMC) performance. The chip also offers a comprehensive diagnostic feature that complies with bulk current injection (BCI) requirements that are designed to promote safe and smart future vehicles.
The chip supports ISO 26262 and single-chip ASIL D standards, meets various BCI requirements and offers comprehensive diagnostics. It also provides a reliable distributive and centralized cell-monitoring controller (CMC) architecture with UART. It supports 100 m daisy-chain segments and high noise immunity; supports emission, electrostatic discharge (ESD) and hot plugging requirements. Internal cell balancing and UART reduce BOM costs compared to competitive solutions. Maxim claims it as the only IC proven to enable capacitive or transformer isolation.
Maxim Integrated | www.maximintegrated.com
NXP Semiconductors has announced a new family of high-performance safe microprocessors to control vehicle dynamics in next-generation electric and autonomous vehicles. The new NXP S32S microprocessors will manage the systems that accelerate, brake and steer vehicles safely, whether under the direct control of a driver or an autonomous vehicle’s control.
NXP is addressing the needs of carmakers developing future autonomous and hybrid electric vehicles with newly available 800 MHz MCU/MPUs. The first of the new S32 product lines, the S32S microprocessor offers the highest performance ASIL D capability available today, according to NXP.
The NXP S32S processors use an array of the new Arm Cortex-R52 cores, which integrate the highest level of safety features of any Arm processor. The array offers four fully independent ASIL D capable processing paths to support parallel safe computing. In addition, the S32S architecture supports a new “fail availability” capability allowing the device to continue to operate after detecting and isolating a failure—a critical capability for future autonomous applications.
NXP has partnered with OpenSynergy to develop a fully featured, real-time hypervisor supporting the NXP S32S products. OpenSynergy’s COQOS Micro SDK is one of the first hypervisor platforms that takes advantage of the Arm Cortex-R52’s special hardware features. It enables the integration of multiple real-time operating systems onto microcontrollers requiring high levels of safety (up to ISO26262 ASIL D). Multiple vendor independent OS/stacks can also run on a single microcontroller. COQOS Micro SDK provides secure, safe and fast context switching ahead of today’s software-only solutions in traditional microcontrollers.
NXP Seimconductors | www.nxp.com
Maxim Integrated Products has announced MAX17843 battery management system (BMS). The MAX17843 is 12-channel, high-voltage smart sensor data-acquisition device. Electric vehicles (EVs), hybrid EVs, and plug-in hybrids rely on large lithium-ion battery packs filled with hundreds or even thousands of individual battery cells. With industry experts predicting that 25% of cars sold by 2025 will have electric engines, automotive OEMs and Tier 1s need an intelligent battery management system to enable safe, low cost solutions with robust communications.
MAX17843 meets the highest safety standards, adhering to ISO 26262 and ASIL D requirements (also applicable for ASIL C). Its differential universal asynchronous receiver/transmitter (UART) using capacitive isolation reduces bill of materials (BOM) costs and failure in time (FIT) rates. With this, designers can save up to 90% of their isolation BOM cost. The UART, with ultimate flexibility, enables robust communications in noisy environments. Using Maxim’s unique proprietary daisy-chain architecture and successive-approximation-register (SAR) analog-to-digital converter (ADC), the MAX17843 captures fast, accurate voltage measurements and delivers high EMC performance. It is applicable for a variety of automotive and EV powertrain applications.
- Safety: ISO 26262 and ASIL D certification, as well as TUV certification in design and management process; meets various BCI requirements; comprehensive diagnostics
- Low System Cost: Internal cell balancing and UART reduces BOM costs compared to competitive solutions; only IC to allow capacitive or transformer isolation
- Robust Communications: Reliable distributive and centralized CMC architecture with UART; Supports 100m daisy-chain segments and high noise immunity; Supports emission, ESD, and hot plug
The MAX17843 is available at Maxim’s website for $7.61 (1,000), The MAX17843EVKIT# evaluation kit is available for $1,000. The device operates over the -40°C to +125°C temperature range and is available in a 64-pin LQFP package (10mm x 10mm).
Maxim Integrated Products | www.maximintegrated.com