The industry's smallest two-wire passive PWM-to-analog isolation transmitter obtained a national patent

发布时间:2021-08-29 17:07:58  Number of views:763order

Sunyuan Technology is a Shenzhen high-tech enterprise in 2007 and a national high-tech enterprise in 2011 and 2014. The company takes "customer's success, our value" as its business philosophy, and in accordance with the requirements of the ISO 2008 quality technology management system, insists on carrying out improvements, improvements and innovations, continuously improving product quality, reducing production costs, expanding product application scope, and introducing new research and development. New product. In order to adapt to the current situation of the rapid development of electronic information technology and to meet the needs of customers for product development, innovation and upgrading. Sunyuan Technology has more than 10 years of design, production and application experience in DC-DC module power supplies, data collectors, isolation amplifiers, isolation transmitters, and display control instruments. The full range of products has more than 20 national patents and software copyrights. The company's professional engineer team has an absolute advantage over competitors in the same industry in terms of deeper understanding and design knowledge. Provide a large number of solutions for users who need to solve signal interference, signal load matching, ground isolation, power conversion, data acquisition, signal isolation, AD/DA conversion, etc. Each of Shunyuan's products uses device raw materials that exceed the predetermined specifications to design and produce high-stability products, which ensure that the products exhibit good performance during operation in various harsh environments.

      
    The new product developed this time: ISO D-O1 is the industry's smallest volume and low power consumption passive PWM pulse width modulation signal isolation and conversion into a two-wire 4-20mA transmitter IC newly developed by Sunyuan Technology. The working mode of this IC is to receive the PWM signal output from the front-end device through the current loop feeding mode of the rear stage (output end), and output the corresponding 4-20mA standard two-wire current signal after isolation conversion. This PWM pulse width transmitter is a hybrid integrated circuit that converts the duty cycle of the PWM square wave signal into an analog standard signal through isolation. The product is designed as a low-cost, small-volume standard SIP8 Pin flame-retardant IC package; it contains signal coupling high-speed isolation conversion circuit, precision reference voltage switch control circuit, low-pass filter circuit, drive amplifier circuit, VI conversion circuit, etc. The product has the characteristics of high conversion accuracy of PWM signal, good linearity, and wide output loop power supply voltage range (12-36VDC). The integrated process structure and new technology isolation measures enable the device to achieve: signal input and output 3000VDC isolation, and can meet the requirements of industrial-grade harsh working environment with wide temperature, humidity and vibration.

   
      The new product ISO D-O1 adopts advanced high-speed photoelectric coupling isolation mode and high-efficiency post-feeding technology to achieve precise isolation conversion from PWM signal to 4-20mA standard signal, which can be input with the current standard analog quantity of various types of instrumentation equipment Ports (such as: PLC, DCS, FCS) match. The two-wire ultra-small size (22.0X11.0X9.0mm) standard PCB board mounting design without a working power supply can effectively simplify the user's system design options and reduce the installation volume and wiring costs. The product also has extended function DIN35 standard rail installation and PIM panel display embedded installation method. The DIN rail type installation method can realize multiple transmission functions such as one in and one out, two in and two out, and three in and three out. The PIM panel embedded intelligent transmission meter can realize the intelligent functions of sensor analog signal isolation display, alarm control and long-distance distortion-free transmission. It is widely used in metallurgical mining, petrochemical industry, power equipment, medical equipment, industrial automation, new energy facilities and military scientific research and other fields. Users can customize suitable products according to site needs.   

Product principle block diagram



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Product selection example:

Example 1: PWM pulse width signal input: 20KHz square wave; signal output: 4-20mA;Corresponding product model: ISO D5-O1

Example 2: PWM pulse width signal input: 50Hz square wave; signal output: 4-20mA;Corresponding product model: ISO D1-O1

Example 3: PWM pulse width signal input: 1KHz square wave; signal output: 4-20mA;Corresponding product model: ISO D3-O1

 

 

 

Product appearance and installation method reference

 


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