Ambarella and Neusoft Reach front ADAS smart camera in mass production

Neusoft Reach and Ambarella;s front ADAS goes into mass production

Ambarella and Neusoft have partnered to deliver smart sensing solutions for automotive manufacturers across the globe. The co-developed front advanced driver assistance system has gone into mass production in mainstream models of a Chinese car manufacturer. The solution involves Neusoft Reach’s X-Cube 3.0 front-view smart camera that is equipped with Ambarella’s CV22 AI vision system-on-chip (SoC).

Neusoft Reach has been able to achieve significant improvements in the performance of its AI models through the utilization of Ambarella’s CVflow AI architecture, which has a unique unstructured sparsity capability. The unique unstructured-sparsity capability of Ambarella’s CVflow AI architecture allows for the creation of AI models that consume less power and memory while maintaining high levels of accuracy. This has a significant impact on the development of intelligent driving systems, which rely heavily on the processing of large amounts of data in real time.

The two companies have plans to continue their collaboration in China to explore new possibilities in the field of ADAS using Ambarella’s advanced system-on-chips. They focus on developing Level 2 ADAS products for passenger cars in China, aiming to provide a safe and comfortable driving experience.

“Our CVflow SoCs provide a high-performance AI processing engine for Neusoft Reach’s advanced neural network algorithms. Additionally, our integrated image signal processor continues to set the industry benchmark for image quality, while our efficient SoC architecture provides the industry’s best AI performance per watt,” says Fermi Wang, president and CEO of Ambarella.

Ambarella designed CV22 system-on-chip to combine CVflow architecture with deep neural network processing designed for next-generation applications in wearable cameras. The hardware uses 10nm process technology to combine low-power and high-performance capabilities for computer vision use cases.

Inside the CV22 is a quad-core Arm Cortex-A53 processor core clocked up to a frequency of 1.0GHz. The system-on-chip supports ThreadX and Linux operating systems for advanced image and video processing. It is able to achieve more than 800 MPixels input rate through dual independent sensor inputs.

This cooperation between Ambarella and Neusoft Reach showcases our effective implementation of autonomous algorithms, providing innovative technology solutions for the industry while helping to create a new ecology of intelligent networked vehicles,” says Liu Wei, deputy general manager of Neusoft Reach.

In our previous coverage of Ambarella, we discussed the launch of the CV5 AI vision system on chip that supported 8K video and 4K video processing along with CVflow computer vision processing in a single and low-power design architecture.

Sony Semiconductor Solutions expand its industrial reach through Raspberry Pi

Sony Semiconductor Solutions has made a strategic investment in Limited to provide Aitrios, an edge computing platform deeper into the Raspberry Pi community. Neither company has disclosed the investment amount, but it is speculated that this partnership will enable Sony Semiconductors to leverage Raspberry Pi’s acceptance in the industrial markets.

The collaboration is not the first of its kind since both companies have previously worked on leveraging Sony’s imaging solutions for the Raspberry Pi modules and computer boards. Sony believes that its support for Raspberry Pi boards will enable the community to utilize its edge AI solutions to provide a seamless and unique development experience.

“Our goal is to provide new value to a variety of industries and support them in solving issues using our innovative edge AI sensing technology built around image sensors,” says Terushi Shimizu, president and CEO of Sony Semiconductor Solutions Corporation.

In an analysis by Junko Yoshida, she says, “Sony, which is not an MCU vendor, has not cultivated its own IoT developers’ community. Sony is betting on Raspberry Pi to create a foothold.” This means that the industry looks at this as a new way to explore markets where the company does not have a stronghold, leveraging the partner’s ecosystem.

Sony Aitrios edge AI sensing platform

“This transaction will allow us to expand our partnership, bringing Sony Semiconductor Solutions’ line of AI products to the Raspberry Pi ecosystem, and helping our users to build exciting new machine-learning applications at the edge,” says Eben Upton, CEO of Raspberry Pi Limited.

Sony Aitrios is designed to be a B2B platform to provide all the necessary software and application development environment to design edge computing applications. Recently, at the tinyML Summit 2023, the edge AI sensing platform service, Aitrios, won the tinyML Awards 2023 for Best Innovative Software Enablement and Tools.

Earlier this year, Sony also announced that the Aitrios edge computing platform could be accessed from the Azure portal. The partnership combines Sony’s advanced image sensor technology with Microsoft Azure’s powerful AI development environment and pre-trained AI models. This allows the developer to create edge AI solutions by prioritizing customer security and privacy.

Antmicro creates an open hardware Xilinx Kintex K410T development board

Antmicro Kintex-7 K410T development board

Antmicro, known for its open hardware ecosystem, has designed the AMD-Xilinx Kintex-7 development board for developers to explore its potential as an RTL prototyping platform. Antmicro has introduced this board as part of its extended open-source SystemVerilog toolchain. The company chose the AMD FPGA design because it has already been widely used in open hardware projects, such as the Data Center RDIMM DDR4 Testers and the DDR5 Tester.

The AMD Xilinx Kintex-7 FPGA provides 400k logic cells in a 900-pin package with input/output ports divided into 7 high-range and three high-performance banks. The PCB has a compact form factor of a nano-ITX board which measures 120×120 mm and can be powered using multiple power sources— regular DC power jack, 40W PoE++ on Gigabit Ethernet connector, and a 45W USB Type-C power delivery.

Antmicro’s Kintex K410T development board provides users with the ability to synthesize custom RISC-V-based processing platforms. This allows developers to create custom processing platforms that can be tailored to meet the specific needs of their applications.

The Kintex K410T development board features a range of I/O options, including the industry-standard FMC connector. The FMC connector provides PCIe x8 on 12.5Gb/s transceivers and 50 I/Os, consisting of 24 length-matched differential pairs and two single lanes, all in the 3.3V domain.

The PCIe x8 interface provided by the FMC connector allows the Kintex K410T to achieve high-speed data transfer rates, making it suitable for applications that require high-performance data processing. The 50 I/Os provided by the FMC connector also provides developers with a wide range of options for connecting the Kintex K410T to other devices and systems.

One of the key benefits of the Kintex K410T development board is that it allows for hardware-in-the-loop testing of designs with multiple IP cores and peripherals, such as OpenTitan and its variants. This means that developers can use the Kintex K410T to test their ASIC designs in a real-world hardware environment, which can help identify and correct any issues or bugs before the final product is manufactured.

M5Stack has designed CM4Stack development kit for industrial automation

M5Stack has designed CM4Stack, a development kit based on the Raspberry Pi Compute Module 4 for industrial automation and smart home applications. M5Stack has always been developing IoT boards and modules for increased adoption among maker communication and professional embedded hardware and software engineers.

The CM4Stack host board includes a capacitive touch display with a resolution of 320×240 pixels. This 2-inch IPS LCD screen is a high-quality display that can display high-quality images and videos. The capacitive touch screen allows for intuitive and responsive touch functions, which makes it ideal for projects that require user interaction.

The M5Stack can be installed using DIN rail, wall hanging, and screw fixing methods. The DIN rail method is commonly used in industrial automation applications, where devices are mounted on DIN rails for easy installation and maintenance. M5Stack’s DIN rail mounting option allows it to be easily integrated into industrial control systems and other similar applications.

Specifications of M5Stack CM4Stack development kit

  • Board: Compute Module 4 featuring Broadcom BCM2711
  • Connectivity: IEEE802.11b/g/n/ac Wi-Fi 2.4GHz and 5GHz
  • Display: 2-inch LCD screen with touch function and ST7789V2 controller
  • Interface: Connector for an external antenna
  • Port: USB Type-C, Serial port, Gigabit Ethernet, USB3.2, HDMI
  • Power: 12V/3A DC power input connector
  • Heat sink: DIN-rail mounted heat sink with a built-in cooling fan
  • Button: Download button for entering download mode
  • Security: Cryptographic authentication IC for secure communication
  • Dimensions: 59x46x44 mm
  • Weight: 118.8 grams

M5Stack CM4Stack Development Kit Hardware Overview

The security authentication chip AW32901ID-KEY (ATECC608B) is a hardware-based secure cryptographic coprocessor that is designed to provide advanced security features to embedded systems. The chip is integrated into the M5Stack, and it offers a range of security capabilities, including secure data storage and transmission.

Features

  • High-performance embedded system: built-in multiple powerful chips and interfaces, equipped with a 2.0-inch LCD screen and touch function, capable of displaying high-quality videos and images.
  • Multiple interfaces and functions: including antenna interface, 2W speaker, HDMI interface, USB-C (2.0) interface, USB3.2 interface, Gigabit Ethernet interface (RJ45), I2C interface, serial port, and DC power input port, supporting various peripheral devices and data transmission methods.
  • Security performance: equipped with a security authentication chip AW32901ID-KEY (ATECC608B), capable of secure data transmission and storage.
  • Clock function: equipped with RTC chip BM8563, capable of clock function.
  • Heat dissipation design: equipped with a heat dissipation base and heat dissipation fan to ensure stable system operation for a long time.

The M5Stack has been designed with a heat dissipation system to ensure stable system operation for a long time. It also features a heat-dissipation fan that provides additional cooling for the device. The development kit is optimized to provide maximum cooling efficiency without generating excessive noise.

M5Stack’s CM4Stack development kit is currently sold out on the official website where it is priced at $199.00. The kit includes a CM4Stack board with a power adapter, Hex key, instruction manual, base snap, and a screw holder.

Nvidia has brought IGX edge AI developer kit for industrial applications

Nvidia IGX Orin developer kit

As edge computing has witnessed massive adoption from enterprises to bring digital transformation and expand their value proposition, they need to get their hands on industrial-grade edge development platforms. Nvidia has introduced the IGX Orin developer kit that combines enterprise-grade hardware, software, and all the necessary tools for application development leveraging edge artificial intelligence.

The Nvidia IGX Orin developer kit is designed to deliver the performance of 275 tera operations per second. The platform also includes an Nvidia Connect-7 smart network interface card with a claimed networking speed of 200 gigabits per second. Inside the IGX Orin module is a 12-core Arm processor with Ampere 1024 Cuda and 64 Tensor GPU.

The IGX Orin integrates a safety microcontroller unit that can program additional safety functions into the IGX software stack. This microcontroller unit can be programmed through software extensions and deliver advanced safety features in autonomous environments.

The core of the IGX stack includes several software components, such as a Linux board support package, drivers for supported input/output (IO) devices, NVIDIA AI inference and acceleration libraries, and reference applications. These components are essential for the functioning of the IGX hardware and provide the necessary support for various input/output (IO) devices.

Nvidia IGX Orin developer kit image

Additionally, the core stack is designed to be flexible and customizable. Customer-specific software components and applications can be added to the core stack to meet specific customer needs. This allows customers to tailor the IGX stack to their specific use cases and requirements.

The Nvidia IGX Orin developer board will be equipped with extra components and software to facilitate remote system management, software updates, and secure booting. These components will include a board management controller (BMC) and a software stack to enable remote system management and software updates, as well as a secure boot controller to ensure system integrity during the boot process by providing an external root of trust.

Some embedded manufacturers include ADLINK, Advantech, Dedicated Computing, Kontron, Leadtek, MBX, Onyx, Portwell, Prodrive Technologies, and YUAN, who will showcase their IGX Orin design to serve the industrial and medical sector. The developer kit is currently available on PNY Technologies and Arrow Electronics.

AAEON Announce the World’s First Fanless Mini PC with Intel Core i3 Processor N-series

UP Squared Pro 7000 Edge combines the reliability of a fanless design with the power of Intel® Core™ i3 Processor N-series, Atom® Processor X Series, and Intel® Processor N-series platforms.

Converting the ingenuity of the UP Squared Pro 7000 board to its edge system range, AAEON’s UP Squared Pro 7000 Edge is the first mini PC to harness the power of Intel® Core™ i3 Processor N-series, Atom® Processor X Series, and Intel® Processor N-series processors in a fanless chassis.

The first fanless mini PC to utilize the processor platforms, the UP Squared Pro 7000 Edge provides developers with the same performance boost as its board counterpart, but with a more convenient route to market. The device’s heatsink offers effective heat dissipation without the obvious drawbacks of a fan-based cooling system, opening the door to deployment in more settings, such as smart manufacturing and healthcare.

Key Features:

  • Alder Lake-N processor platform
  • Removable heatsink for easy 5G, Wi-Fi 6, and AI expansion module installation
  • 2.5GbE x 2, USB 3.2 Gen 2 x 3, RS-232/422/485 x 2, 40-pin GPIO
  • 3 simultaneous 4K displays

A multipurpose design, the UP Squared Pro 7000 Edge’s heatsink contains a removable section for users to access the PC’s expansion slots. This makes the installation of 5G, Wi-Fi 6, and AI expansion modules much more efficient and convenient. In keeping with the UP system range’s previous iterations, the device’s rear I/O also houses a 40-Pin GPIO for further expansion.

The UP Squared Pro 7000 Edge presents improvements across its external I/O, with both LAN ports supporting 2.5GbE, compared to only one in the case of its predecessor. Further, a USB 3.2 Gen 2 Type-C port joins two USB 3.2 Gen 2 Type-A ports; while two COM ports supporting RS-232/422/485 have been added across all SKUs, a feature which until now had been limited to one COM port available only on SKUs powered by Intel Atom® CPUs.

For more information about the UP Squared Pro 7000 Edge, please visit our product page or contact an AAEON representative directly.

9V @ 45mA Boost Converter Output with Input 2.1V to 5.5V

The project shown here is a boost converter that provides 9V DC output from 2.1V to 5.5V input. It is a good choice for battery-operated devices where the converter can be connected to 2x 1.5V, 3 x 1.5V Battery, 1 x Li-ion, 2 x NICAD, 2 x NIMH, and provide 9V Output. The board is built using BD8158FVM chip and the pin configuration is the same as TO220 78xx LDO and the size is also the same. Output is very accurate and provides approx. 85% efficiency at an operating frequency of 1.2Mhz.

Features

  • Input 2.1V to 5.5V (2 X NIMH Battery, 2 X NICAD Battery, 1X Li-Ion Battery 3.6V, 2X AA/AAA battery)
  • 3 Pin Header Pitch 2.54MM for Output and Input (Pin Configuration same as TO220 LDO Such as LM7805)
  • Output 9V DC
  • Output Current 45mA
  • 85% Efficiency
  • Output Voltage +/-1%
  • Current Mode PWM System
  • Built-In Under-Voltage Lockout Protection Circuit
  • Built-In Over-Current Protection Circuit
  • Built-In Thermal Shutdown Circuit
  • PCB Dimensions 20.16 x 9.05mm

Protection Circuit (UVLO/TSD) UVLO (under-voltage lockout protection circuit) shuts down the circuit when the voltage is equal or lower than 1.8V. Thermal shutdown circuit shuts down IC’s operation at 175°C and recovers at 160°C.

Over-Current Protection Circuit (OCP) Current flowing to the power FET is detected by voltage at the CURRENT SENSE and the Over-Current protection operates at 3A. When the Over-Current protection activates, the switching is turned OFF and the SS pin capacity is discharged.

Soft-Start Circuit Since the output voltage rises gradually while restricting the current at the time of start-up, it is possible to prevent the output voltage overshoot or the inrush current.

Connections

CN1: Pin 1 = Input 2.1V to 5.5V, Pin 2 = GND, Pin 3 = Output 9V DC – 45mA

Schematic

Parts List

NOQNTYREF.DESCMANUFACTURERSUPPLIERSUPPLIER PART NO
11CN13 PIN MALE HEADER RIGHT ANGLE PITCH 2.54MMWURTHDIGIKEY
21C1100PF/25V CERAMIC SMD SIZE 0805MURATA/YAGEODIGIKEY
31C23.3nF/25V CERAMIC SMD SIZE 0805MURATA/YAGEODIGIKEY
41C310nF/25V CERAMIC SMD SIZE 0805MURATA/YAGEODIGIKEY
51C410uF/25V CERAMIC SMD SIZE 1206MURATA/YAGEODIGIKEY
61D1SS34 SMD FAST SWITCHING DIODETAIWAN SEMIDIGIKEY1801-SS34TR-ND
71L110uH/SMD 8MM EATONDIGIKEY283-SDCH1V6028-100M-RCT-ND
81R15.1K/1% SMD SIZE 0805MURATA/YAGEODIGIKEY
91R2110K/1% SMD SIZE 0805MURATA/YAGEODIGIKEY
101R318K/1% SMD SIZE 0805MURATA/YAGEODIGIKEY
111U1BD8158FVM-TRROHMDIGIKEYBD8158FVMCT-ND
121C510uF/25V CERAMIC SMD SIZE 0805MURATA/YAGEODIGIKEY

Connections

Gerber View

Photos

Video

BD8158FVM Datasheet

3.3V-5A Output DC-DC Converter with 10 to 24V Input

The project published here is a synchronous step-down DC/DC converter based on the RT7258 chip. The chip has integrated high-side internal power MOSFET and gate driver for a low-side external power MOSFET. The board delivers 3.3V DC – 5A output current from 10V to 24V input supply. The RT7258‘s current mode architecture allows the transient response to be optimized over a wide input voltage and load range. Cycle-by-cycle current limit provides protection against shorted outputs and softy-start eliminates input current surge during start-up.

Features

  • Supply 10V to 24V DC
  • Output 3.3V DC
  • Load Current 5Amps
  • Current Mode Control
  • Switching Frequency 600Khz
  • Up to 90% Efficiency
  • Cycle-by-cycle Current Limit
  • Input Under Voltage Lockout
  • Output Under Voltage Protection
  • Thermal Shutdown Protection, Threshold 150°C
  • Output Power LED
  • 4 x 2.5mm Mounting Holes
  • PCB Dimensions 51.44 x 24.13 mm

Soft-Start (SS): An internal current source charges an internal capacitor to build the soft-start ramp voltage (VSS). The VFB voltage will track the internal ramp voltage during the soft-start interval. The typical soft-start time is 2ms.

Over Temperature Protection

The RT7258 features Over Temperature Protection (OTP) circuitry to prevent overheating due to excessive power dissipation. The OTP will shut down the switching operation when the junction temperature exceeds 150°C. Once the junction temperature cools down by approximately 20°C, the converter will resume operation. To maintain continuous operation, the maximum junction temperature should be lower than 125°C.

Connections

  • CN1: Pin 1 = 10V to 24V DC Input, Pin 2 = GND
  • CN2: Optional Connector for TO220 MOSFET
  • CN3: Pin 1 = 3.3V / 5Amps Output, Pin 2 = GND
  • D1: Output Power LED

Schematic

Parts List

NO.QNTY.REF.DESC.MANUFACTURERSUPPLIERSUPPLIER'S PART NO
12CN1,CN32 PIN SCREW TERMINAL PITCH 5.08MMPHOENIXDIGIKEY277-1247-ND
21CN2DNP
35C1,C3,C4,C5,C622uF/25V CERAMIC SMD SIZE 0805YAGEO/MURATADIGIKEY
42C2,C71uF/25V CERAMIC SMD SIZE 0805YAGEO/MURATADIGIKEY
51D1LED RED SMD SIZE 0805OSRAMDIGIKEY475-1278-1-ND
61L12.2uH/10A SMD OR THT 12X12MMCHILISIN ELECTRDIGIKEY553-BPRR001010512R2TA0TR-ND
71Q1FDD8876CTON SEMIDIGIKEYFDD8876CT-ND
81R162K 1% SMD SIZE 0805YAGEO/MURATADIGIKEY
91R21K 5% SMD SIZE 0805YAGEO/MURATADIGIKEY
101R320K 1% SMD SIZE 0805YAGEO/MURATADIGIKEY
111R449.9K 1% SMD SIZE 0805YAGEO/MURATADIGIKEY
121R510.2K 1% SMD SIZE 0805YAGEO/MURATADIGIKEY
131U1RT7258 SOIC8RICHTEK USA INCDIGIKEY1028-1214-1-ND

Connections

Gerber View

Photos

Video

RT7258 Datasheet

21-Watt Universal AC LED Driver with Accurate Average-Mode Constant Current Control

The project presented here is an average current mode control LED driver operating in a constant off-time mode. The project consists of a bridge rectifier followed by a buck converter operating with a fixed off-time of 20µs. The circuit provides accuracy, and line and load regulation of the LED current. The output LED current accuracy is +/-4%. The project is built using HV9961 chip which is equipped with a current limit comparator for hiccup-mode output short circuit protection. A PWM dimming input is provided that accepts an external control of a TTL-compatible signal. Connect the PWMD terminal to the VDD terminal using the jumper provided to enable the LED driver.

HIGH VOLTAGE: Dangerous voltage exists until the power is off. Wait at least 1 minute after the input power is disconnected before touching the board and discharging HV capacitors.

Features

  • Supply 90V to 265V AC 50Hz/60Hz
  • Output 20 to 60V, 350mA
  • Full Load Efficiency Up to 92%
  • Switching Frequency 38Khz
  • Fast Average Current Control
  • PWM Dimming Input (Jumper J1)
  • Output Short-Circuit Protection with Skip Mode
  • PCB Dimensions 74.93 x 40.64mm
  • 4 x 4MM Mounting Holes

Connections and Other Details

  • CN1: Pin 1 = AC Live Input, Pin 2 = AC Neutral Input (90V to 265V AC Input)
  • CN2: Pin 1 = DC 20V to 60V DC @ 350mA Output (+LED), Pin 2 = -LED
  • Jumper J1: Pin 1 = VDD, Pin 2 = PWM In/Enable, Pin 3 = GND, Connect to VDD = Enable, Use as PWM input for Dimmer Function
Typical LED Cluster

PWM Dimming

The circuit is capable of being PWM dimmed by applying a square wave TTL compatible signal between PWMD and GND terminals of Jumper J1. However, since there is no galvanic isolation on the board, care must be taken to prevent damage to the PWM dimming source and/or the circuit.

The LED driver features tight regulation of the LED current within a few milliamps over the entire range of the input AC line and the output LED string voltage. The LED current accuracy is almost insensitive to the passive component tolerances, such as the output filter inductance or the timing resistor. The accuracy of the LED current is mainly determined by the internal 275mV ± 3% reference voltage of the HV9961 control IC and by the external current sense resistor R4 and R5 tolerance. The output current can be adjusted down to 60mA using the onboard resistor R3. However, accurate current control is only achieved with continuous conduction of the filter inductor, i.e., when the LED current is greater than the inductor ripples current amplitude.

Note: The linear dimming input of the HV9961 disables switching when its voltage falls below a 200V threshold. Expect the LED driver to shut off when the LED current falls below 50 to 55mA. The HV9961 features protection from an output short circuit condition. Open LED protection is inherent since the output filter capacitor can accept the fully rated rectified AC line voltage.

Schematic

Parts List

NO.QNTY.REF.DESC.MANUFACTURERSUPPLIERSUPPLIER'S PART NO
11CN12 PIN SCREW TERMINAL PITCH 5.08MMPHOENIXDIGIKEY277-1247-ND
21CN22 PIN SCREW TERMINAL PITCH 5.08MMPHOENIXDIGIKEY277-1247-ND
31C10.1uF/275VX2KEMETDIGIKEY399-9651-ND
41C247uF/450V DIA 12 TO 16MMELITEDIGIKEY4191-VJ2W470MNN1625A6-ND
52C3,C40.47uF/275VX2KEMETDIGIKEY399-12701-ND
61C5DNP
71C6100nF/50V CERAMIC SMD SIZE 0805YAGEO/MURATADIGIKEY
81C72.2uF/16V CERAMIC SMD SIZE 0805YAGEO/MURATADIGIKEY
91D1W04G/1.5A BRIDGE RECTIFIERVISHAYelement14.com1497577
101D2MURS360 DIODE INCORPDIGIKEY31-MURS360CT-ND
111J1JUMPER3P- 3 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5316-ND
121L14.7mH INDUCTOR RENCO RL-1292-4700RENCODIGIKEYrencousa.com
131Q1DNP- OPTIONAL FOR Q2 TO220
141Q2STD5NM50AG DIGIKEYST497-STD5NM50AGCT-ND
151RT1CL140-NTCAMPHENOLDIGIKEYKC014L-ND
161R1464K 1% SMD SIZE 0805YAGEO/MURATADIGIKEY
172R2,R70E SMD SIZE 0805YAGEO/MURATADIGIKEY
181R3100K 5% SMD SIZE 0805YAGEO/MURATADIGIKEY
191R41E SMD SIZE 2512YAGEO/MURATADIGIKEY
201R53.3E SMD SIZE 2512YAGEO/MURATADIGIKEY
211R61K 5% SMD SIZE 0805YAGEO/MURATADIGIKEY
221U1HV9961MICROCHIPDIGIKEYHV9961NG-G-ND
231J1-SSHUNT FOR JUMPER J1SULLINS CONNECTDIGIKEYS9001-ND

Connections

Gerber View

Photos

Video

HV9961 Datasheet

5V – 4A Buck Converter using NR110E

This powerful buck converter can efficiently produce 5 V@4A with an input voltage between 7V to 31V. The project is built using the NR110E chip from Sanken Semiconductor. The IC integrates the power MOSFET. With current mode control, ultra-low ESR capacitors, such as ceramic capacitors are used. The ICs have protection functions such as Overcurrent Protection (OCP), Undervoltage Lockout (UVLO), and Thermal Shutdown (TSD). An adjustable Soft-start by an external capacitor C4 prevents the excessive inrush current at start-up. The feature of increasing efficiency at light loads allows the project to be used in energy-saving applications. Due to the ICs integrating phase compensation circuit the number of external components count is low. Screw terminal provided for easy input and output connections. D2 Power LED indicates the output. The project provides an efficiency of up to 94%.

Features

  • Input Supply 7V to 31V
  • Output 5V DC
  • Maximum Load 4 Amps
  • Operating Frequency 350Khz
  • Efficiency Up to 94%
  • Current Mode PWM Control
  • Soft Start Function
  • Over Current Protection (Drooping) Auto Restart – Threshold 5.5Amps
  • Thermal Shutdown (Auto Restart) – Threshold 165 Degree Cent.
  • Thermal Shutdown Restart Hysteresis of Temperature 20 Degree Cent.
  • Undervoltage Lockout
  • PCB Dimensions 43.18 x 43.18mm
  • 4 X 2.5MM Mounting Holes

Connections and Other Details

  • CN1: Pin 1 = 7V to 31V DC Input, Pin 2 = GND
  • CN2: Pin 1 = 5V DC Output, Pin 2 = GND
  • D2 LED: Output LED

Schematic

Parts List

NOQNTY.REF.DESCMANUFACTURERSUPPLIERSUPPLIER PART NO
12CN1,CN22 PIN SCREW TERMINAL PITCH 5.08MMPHOENIXDIGIKEY277-1247-ND
22C1,C210uF/35V CERAMIC SMD SIZE 1210MUARATA/YAGEODIGIKEY
31C30.1uF CERAMIC SMD SIZE 0805MUARATA/YAGEODIGIKEY
41C510uF/16V CERAMIC SMD SIZE 1210MUARATA/YAGEODIGIKEY
51C647uF/16V CERAMIC SMD SIZE 1210MUARATA/YAGEODIGIKEY
63R6,C7,C8DNP
71D1B560CQ FAST DIODEDIODE INCORPDIGIKEYB560CQ-13-FDICT-ND
81D2LED RED SMD SIZE 0805OSRAMDIGIKEY475-1278-1-ND
91L110uH/10ACHILISIN ELECTRONICSDIGIKEY553-BFSI00090908100M05TR-ND
101R1510K 1% SMD SIZE 0805MUARATA/YAGEODIGIKEY
111R222E 5% SMD SIZE 0805MUARATA/YAGEODIGIKEY
121R31K 5% SMD SIZE 0805MUARATA/YAGEODIGIKEY
131R418K 1% SMD SIZE 0805MUARATA/YAGEODIGIKEY
141R53.3K 1% SMD SIZE 0805MUARATA/YAGEODIGIKEY
151U1NR111 SOIC8SANKENDIGIKEYNR111ECT-ND
161C40.1uF/50V CERAMIC SMD SIZE 1206MUARATA/YAGEODIGIKEY

Connections

Gerber View

Photos

 

Video

NR110E Datasheet

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