Technological Innovation Achieved by Process Breakthrough: 90nm Process Creates High-performance Parking Sensor Chip iND24003 (Dolphin), Restructuring the Industry Pattern with Core Strengths

Amid the wave of automotive intelligence and lightweightdevelopment, parking safety, as a core part of automotive active safety, isushering in a critical juncture of technological iteration. For a long time,the core chip market for automotive parking sensors has been dominated byinternational leading enterprises, forming a highly barrier industry pattern.Now, relying on the breakthrough 90nm process, the first transformerlessparking sensor chip iND24003 integrated with a high-precision temperature sensorhas been mass-produced. This chip, integrating direct drive technology andmultiple innovative designs, has successfully broken the technical barriers ofthe industry, providing global automotive electronics manufacturers with anefficient, reliable, low-cost and easy-to-operate one-stop solution, andredefining the core value of parking safety chips.

Direct Drive Design: Reduce Burden and Boost Efficiency,Cut Costs and Ensure Reliability, Break Through Technical Shackles

This product has achieved a technological breakthrough intransformerless integrated design, abandoning the design limitation oftraditional chips that rely on external transformers, highly integrating thedrive module with the core chip, and completely eliminating the need forexternal transformers and auxiliary components related to large capacitors.

The chip is equipped with a high-precision steppedresidual vibration compensation circuit (Damping), which can effectivelycontrol the energy attenuation of the probe during the residual vibrationprocess and realize universal adaptation to probe cores. Tests show that thedetection blind zone of mainstream probe cores in the market matched with thischip is less than 500px, fully meeting the technical requirements of majorautomobile enterprises worldwide. Meanwhile, customized development can becompleted quickly according to customers' product positioning.

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Integrated High-precision Temperature Sensor: PreciseCompensation, Micro-error Ranging, Reaching World Top Level

The ranging accuracy of parking sensors is highlysusceptible to ambient temperature — the propagation speed of ultrasonic waveshas a clear linear relationship with ambient temperature. In dry air, therelationship between the speed of sound v (unit: m/s) and the Celsiustemperature T (unit: ℃) is v≈331.4+0.607×T. A temperaturedifference of 25℃ will lead to a sound speed deviation of about 15m/s,corresponding to a ranging error of up to ±57.49999999999999px, which exceeds the safetytolerance threshold in parking scenarios.

The sensors integrated in existing similar chips havelimited precision (simple temperature measurement diodes, ±6℃) with poor compensation effects; while the iND24003innovatively integrates a high-precision temperature sensor into a single chipwithout the need for any external auxiliary devices. It can collect ambienttemperature data in real time with a precision of up to ±2℃, provide temperature data for ECU or Domain in real timeto complete sound speed compensation, dynamically correct ranging results, andensure that the ranging accuracy is always kept within ±25px in the widetemperature range of -40℃~85℃, realizing high-precision ranging in thefull temperature range with performance reaching the world top level.

This design not only simplifies the system structure andreduces the R&D and assembly costs of manufacturers, but also enables theparking sensor system to always provide drivers with accurate distance feedbackin extreme environments such as severe cold and extreme heat, completelyavoiding the risk of parking collisions caused by temperature errors andimproving the parking safety factor in an all-round way. At the same time, thetemperature sensor can monitor the chip's own working temperature in real timeto achieve over-temperature protection, further improving the service life andoperational reliability of the chip, and solving the industry pain point ofinsufficient stability of similar chips in extreme environments.

New Core Advantages: Multi-echo + Multi-STC +Multi-threshold, Easy Setting, Doubling R&D Efficiency

In terms of the number of echoes, the chip supports 5identifiable height echoes, which can capture the echo signals of multipleobstacles at the same time and effectively filter clutter interference. Even incomplex parking scenarios such as multiple obstacles and narrow parking spaces,it can accurately identify the position and distance of each obstacle, avoidmissed and wrong judgments, and greatly improve parking safety.

In terms of the number of STC and threshold, the chip hasachieved a substantial increase, supporting flexible setting of multiple gearsand multiple scenarios, taking the product adaptability and debuggingconvenience to a new level.

Double Command Mode: Compatibility + Expansion, SeamlessReplacement to Reduce Costs, Stable Operation to Prevent Misjudgment

Compatible commands can directly match the command systemof existing mainstream products without major modification to the originalsystem, realizing rapid product replacement, greatly shortening the upgrade anditeration cycle of manufacturers, and reducing R&D and transformationcosts.

Extended commands optimize the rationality of commanddesign and add the ECC check function, which can effectively resist signalinterference in the complex vehicle environment, avoid misjudgments caused bycommand interruption and tampering in similar products, build a solid parkingsafety line at the command level, and make the radar system run more stably andjudge more accurately.

This series of upgrades helps the industry get rid of thedependence on technical authorization, realize independent and controllablecore technologies, and at the same time take into account R&D efficiencyand product safety, providing core support for global automotive electronicsmanufacturers to create highly competitive products.

Empowered by New Technologies: Optimize DetectionPerformance, Surpass in Short and Medium Distance Ranging

The ADC and filter circuit designed based on new principles improve thesignal-to-noise ratio from the technical bottom layer, further optimize theradar detection performance, and make the ranging data more accurate andstable. At the same time, the product has achieved a differentiatedbreakthrough in ranging capability, with its short and medium distance rangingcapability far exceeding that of similar competitors. It not only effectivelyexpands the ranging coverage, but also shows excellent echo performance atdifferent distances: it has a higher echo height and better SNR(Signal-to-Noise Ratio) at the short-medium distance of 1m, can present anultra-high echo at the short distance of 750px, and has particularly excellentdetection capability for short-distance and weak-reflection targets. It canalso maintain stable detection effects at the long distance of 2m and themedium distance of 1.5m, fully covering all kinds of ranging needs in parkingscenarios and solving the short board of similar chips in the detection ofshort and medium distance weak-reflection targets.

Comparison test between iND24003 (orange echo) and acompetitor chip (green echo)

Figure 1: Long distance: 2m

Figure 2: Medium distance:1.5m

Figure 3: Short-mediumdistance: 1m – iND24003 with higher echo height and better SNR

Figure 4: Short distance: 30 cm – iND24003 delivers ultra-highecho with superior detection capability for short-distance, weak-reflectiontargets

Automotive Grade Mass Production Quality, Empowering theUpgrading of Automotive Electronics Industry with Core Technologies

As the first mass-produced automotive parking sensor chipintegrating high-voltage direct drive technology and high-precision temperaturesensor, with the advantages of multi-echo, multi-STC, multi-threshold and newADC and filter circuit, the iND24003 strictly abides by the automotiveelectronics industry standards and has passed the AEC-Q100 automotive gradecertification. It has the core characteristics of high anti-interference, highstability and high reliability, can adapt to various complex working conditionssuch as high temperature, low temperature, vibration and electromagneticinterference in the vehicle environment, and fully meets the adaptation needsof all vehicle types such as passenger cars, commercial vehicles and new energyvehicles.

Compared with mainstream similar chips, the iND24003 notonly matches or even surpasses in core performance, but also has significantadvantages in cost, adaptability and operational convenience. It breaks thetechnical and price barriers of the industry, helps global automotiveelectronics manufacturers reduce supply chain dependence and realizeindependent and controllable core components. At the same time, it providesmanufacturers with differentiated product competitiveness, helping them shortenthe R&D cycle, reduce production costs and improve product quality.

The breakthrough and accumulation in core technologieswill also provide mature technical paths and industrial experience for thesubsequent R&D of ultrasonic series chips, and continuously promote thetechnological upgrading in the field of automotive electronic chips.

From process breakthrough to mass production, from coreperformance upgrade to operational convenience optimization, every innovationof the iND24003 focuses on the core needs of parking safety; every advantage iscommitted to creating greater value for the global automotive electronicsindustry. Choosing the iND24003 is not only choosing a high-performance corecomponent, but also choosing a reliable industrial partner. In the future, wewill work hand in hand with global automotive electronics manufacturers tojointly promote the iterative upgrading of automotive parking safetytechnology, create a safer and more convenient parking experience for hundredsof millions of car owners with innovative technology, and empower thehigh-quality development of the automotive electronics industry.

Ecosystem and Tool Support

The hardware and software platforms and various tools for theevaluation, testing and production of the iND24003 chip have been opened,providing one-stop services for global customers.

Welcome to obtain detailed materials and information viasales@indiemicro.com

1.iND24003 circuit

2.iND24003 ：Sensor Board + Gateway

3.iND24003 Gui