CF8865 module using dedicated switching power supply circuit diagram

  
Described here is a specific module using CF8865 switching power supply circuit, because this circuit is the use of integrated control module CF8865 specific modules. In the fi
CF8865 module using dedicated switching power supply circuit diagram - schematic

gure, VT4, VTs is controlled by the excitation transformer Tz job switch, its output down by a pulse transformer T3, followed by stage output voltage bridge rectifier and regulator, the filtered output of plus or minus two symmetrical DC power supply, which is a group of 18V, another group of 50V. CF8865 can produce oscillation pulse 120kHz from 3,4 pin output module through the excitation transformer T and push the switch VT4, VTs work. CF8865 9-pin output voltage adjustment ends, RPi to adjust potentiometer, adjust Wei, you can change the output voltage value of 08 feet for the output voltage error sample input voltage. l, 2 feet for the mains input voltage fluctuation sampling control input, since CF8865 3.4 foot addition to the excitation pulse to promote the output transformer Tz VT4, VTs turned off, but also to promote the vrl turned off by another winding. When the mains voltage fluctuations, 300V DC voltage rectifier output will fluctuate, so that by the VTi is turned off amplitude pulses across the primary winding Ti formed will fluctuate after it is coupled to the secondary station via VD4 rectifying generated negative voltage amplitude will be crossing the move, and the potential difference between the change in 2,1 feet, after an internal NIE circuit detection to control the output of 3,4 feet pushing pulse width, and ultimately mains fluctuations caused by fluctuations in the output voltage will be regulated to control.



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News


  • EE Herald
    applications... switched-mode (), LED lighting, filters, motor drives, and others. ST has also linked its eDesignSuite with the web-based smart transformer selector published by Wurth Elektronik. This enables power-supply designers to auto
     23 March 2017
  • Wall Street Times (press release)
    ST's eDesignSuite can assist accelerate design of many circuits and systems counting Switched-Mode (), LED lighting, filters, motor drives, and others. ST has now linked its eDesignSuite with the web-based Smart Transformer Selector ...
     22 March 2017
  • GlobeNewswire (press release)
    ...ST's eDesignSuite can help accelerate design of many circuits and systems including Switched-Mode (), LED lighting, filters, motor drives, and others. ST has now linked its eDesignSuite with the web-based Smart Transformer Selector 
     21 March 2017
  • EETE Power Management (registration)
    The increased safety margin and superior static and dynamic behavior of the new devices enable designers to improve the performance of a wide variety of products such as server power supplies, 3-phase switched-mode (), LED ...
     9 March 2017
  • Highland Mirror
    ... into multiple applications, including exciting alternatives in ighter and more-tunable light for general illumination, backlighting for more-vivid displays, optimized power management for high-current and variable-speed
     6 March 2017
  • Electronics360
    The TCM series can be designed into circuit boards on a large number of power electronic devices used for a wide range of applications, including and converters, inverters, battery management systems and chargers. The TCM ...
     4 March 2017
  • Electronics EETimes (registration)
    Electronics EETimes (registration) industryThe overall market for AC/DC and DC/DC commercial (C-), which excludes consumers and uninterruptible (UPS), is estimated to be worth between 22 and 25 billion US Dollars. The market has been s
     23 February 2017
  • EETE Power Management (registration)
    EETE Power Management (registration) Diodes has launched a high-performance power switcher with an integrated high-voltage (HV) start-up circuit for line-powered chargers and adaptors in the consumer and industrial markets. Designed as a pri
     23 February 2017
  • IHS Electronics360
    IHS Electronics360 The choice of the components used in switch-mode () is extremely important, as their impact on performance is often not considered. These components—such as resistors, capacitors and inductors—are called up
     19 May 2016

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