100Khz-multiple-output-switching-power-supply

  
The power supply uses two VN4000A 400-V MOSPOWER FETs in a half-bridge power switch configuration. Outputs available are + 5 Vat 20 A and ±15 V (or ±12 V) at 1 A. Since linear three-terminal regulators are used for the low-current outputs, either ±12 V or ±15 V can be made available with a simple change in the transformer secondary windings. A TU94 switching regulator IC proVides pulse-width modulation control and drive signals for the power supply. The upper MOSPOWER FET, Q7. in the power switch stage is driven by a simple transformer drive circuit.
100Khz-multiple-output-switching-power-supply - schematic

The lower MOS. Q6, since it is ground referenced. is directly driven from the control !C.



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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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