On October 9, 2024, Da Da Da Lian Holdings, an internationally leading semiconductor component distributor dedicated to the Asia Pacific market, announced that its subsidiary, Shiping, has launched a new energy vehicle e-Compressor air compressor solution, mainly based on Flagchip MCU, supplemented by NXP, onsemi, Vishay, and Nanochip chips as peripheral devices.

With the rapid development of the new energy vehicle industry, high-voltage fast charging technology has become the key to solving the problems of "range anxiety" and charging efficiency. Under this trend, more and more car companies are entering the 800V high-voltage platform. In response to this, Da Da Da Da Da Da Da Da Da Shi Ping has launched a new energy vehicle e-Compressor air compressor solution with Qixin Micro FC4150F512BS1P64T1A MCU as the core, equipped with NXP Automotive Safety System Basic Chip (SBC) MFS2300BMBA0EP, onsemi IPM Module NFVA23512NP2T, PSR DC/DC NCV12711ADNR2G device, Shengbang Micro Operational Amplifier SGM8557H-1AQ, Nanocore Micro Isolator NSI8220W0, NSI1311 and NSI1300D25, Molex connector and Vishay resistor. This solution meets the ASIL-B functional safety level and can be used as an air conditioning system to drive new energy vehicles.

Qixin Micro FC4150F512BS1P64T1A is a 32-bit microcontroller based on ARM Cortex-M4 core, with a maximum operating frequency of 150MHz, built-in high-speed memory, rich I/O ports and peripherals, and the ability to expand multiple functions.

In terms of IPM module design, the solution adopts Onsemi's NFVA23512NP2T chip, which is equipped with three high-speed half bridge high-voltage gate drive circuits, integrated (1200V/35A) low loss IGBT tubes, built-in high side bootstrap diodes, supports up to 20KHz PWM, and has a minimum dead time of 2 μ s. And the device also provides multiple protection functions, including undervoltage lockout, overcurrent lockout, temperature monitoring and fault reporting of the driver and integrated circuit, which can bring high-performance and high safety features to the automotive motor.

The low-voltage power supply of this scheme is divided into two paths. In the MCU power supply section, a power management chip with functional safety - MFS2300BMBA0EP - is used. This product integrates multiple LDO outputs and various monitoring and diagnostic functions, including wake-up input, watchdog, reset, interrupt, and failure output after circuit diagnosis. The device also has built-in CAN and LIN modules, which can quickly interact with other modules. In addition, MFS2300BMBA0EP communicates with MCU through SPI, providing potential fault monitoring reports during system operation to enhance safety features.

The IPM power supply adopts onsemi's NCV12711ADNR2G, which is a fixed frequency peak current mode PWM controller suitable for isolated DC/DC topology. This device operates in the range of 4V to 45V without the need for auxiliary windings, supports programmable frequency adjustment from 100kHz to 1MHz, and has built-in slope compensation to avoid subharmonic oscillations. In addition, the controller integrates soft start, under voltage lockout (UVLO), and over power protection (OPP) functions to enhance system safety.

In the selection of isolators, the NSI8220W0, NSI1311, and NSI1300D25 used in the scheme are all products under the Nanochip Micro brand. Among them, NSI8220W0 is used for transmitting PWM signals, feedback VFO, and LDO-PG signals; NSI1311 is used for sampling bus voltage and IPM temperature signals; NSI1300D25 is used for current sampling of the bottom tube of IPM.

For the operational amplifier part, the solution adopts the vehicle grade SGM8557H-1AQ from Sanbong Micro. With this product, the differential signals output by the voltage and current sampling isolators can be converted into single ended outputs for MCU ADC peripheral sampling.

In addition to rich hardware support, this solution adopts the software library architecture of Shiping Sensorless FOC dual resistor sampling in software, and rotates the motor through an onboard potentiometer. And the dual loop control of current loop acceleration loop is adopted to make the system operation more stable.

Core technological advantages:

The combination of MFS2300BBBA0EP (SBC) and FC4150F512BS1P64T1A (MCU) meets the ASIL-B functional safety requirements standard;

SBC FCCU hardware monitoring MCU failure, while Watchdog performs MCU survival supervision to ensure system failure safety protection;

Provide comprehensive motor hardware and software fault protection, overcurrent, undervoltage, locked rotor, phase loss, overheating, etc;

Provide software demo algorithms such as high-frequency injection, dead zone compensation, synovial observer, FOC, etc;

Provide hardware reference designs to accelerate rapid product development.

Scheme specifications:

High voltage side input voltage range: 460VDC~860VDC;

Low voltage side input voltage range: 8VDC~18VDC;

MCU: ARM Cortex-M4 32-bit core, clock speed up to 150MHz, ASIL-B functional safety level;

Support CAN and LIN communication;

Support 2/3 Shun R three-phase current sampling;

Support overvoltage, overcurrent, and over temperature protection;

The onboard potentiometer supports speed adjustment;

Equipped with LED indicator light and UART debugging interface;

Development board size: MCU board 70mm x 40mm, motor drive board 150mm x 135mm.

This is reported by Top Components, a leading supplier of electronic components in the semiconductor industry

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Media Relations

Name: John Chen

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