Self oscillating flyback converter


Rating: 0.00 / 5 
Voltage to Frequency Circuits / Converter Circuits
Diode Dl prevents negative spikes from occurring at the MOSFET gate, the 100 ohm resistor is a parasitic suppressor, and Z1 serves as a dissipative voltage regulator for the output and also clips the drain voltage to a level below the rated power FET breakdown voltage.
Self oscillating flyback converter - schematic

Low-power converter uses the core characteristics to determine frequency. With the transformer shown, operating frequency is 250 kHz.

Recommended videos

  • Self oscillating circuit with self resonating transformer.
    Duration: 10:43.
  • SMPS Tutorial (4): Boost Converters, Flyback Voltages, Switched Mode Power Supplies
    Duration: 13:06.
  • self oscillating auto transformer HV circuit
    Duration: 8:11.


  • ThomasNet News (press release) (blog)
    ThomasNet News (press release) (blog) Mansfield, MA – DATEL, Inc. has announced the introduction of the ADS-429 Series, a new line of multi-channel Analog-to-Digital that offer 12-bit resolution and are housed in a 16-pin plastic TSSOP
     26 May 2016
  • EDN Europe (registration) (blog)
    EDN Europe (registration) (blog) LTC3896 is a high inverting switching regulator controller that drives an all N-channel synchronous power MOSFET stage. Most low to medium power inverting DC/DC use a coupled inductor or transformer: this de
     26 May 2016
  • Elektor (blog)
    Elektor (blog) Texas Instruments has presented the first step-down for powering low- circuits from a 12 V supply rail with a package so small that it achieves a current density of more than 50 A/cm³ – four times as much as all
     26 May 2016
  • Electronics EETimes (registration)
    Electronics EETimes (registration) When used with a hold-up capacitor, SynQor's AC line filter and SynQor's high efficiency DC-DC , each of these PFC modules draws a nearly perfect sinusoidal current (with a Power Factor greater than 0.99) fr
     26 May 2016
  • The analog low-pass filter can remove high noise and interference from the signal path prior to the ADC avoiding contaminating the signal with aliased noise. It also eliminates the effects of overdriven signals beyond the bandwid
     25 May 2016
  • ThomasNet News (press release) (blog)
    ThomasNet News (press release) (blog) (12 V, 10 A, 10 MHz) achieves >50 A/cm³ density.May 25, 2016 - Supplied in 20-pin, 3.5 x 4 x 1 mm HotRod™ QFN package, TPS54A20 SWIFT™ synchronous DC/DC step-down features 14 nse
     25 May 2016
  • IHS Jane's 360
    IHS Jane's 360 All these models now feature digital signal processor control for maximum flexibility and improved performance including line and load regulation, output and output . Three models are available at each power level and each mod
     25 May 2016
  • Electronics Weekly
    Electronics Weekly The target was to shrink a high-current dc-dc ; and the best known path to small size is to increase switching to reduce the need for large inductors and capacitors. However, the standard buck is a hard-switched topology
     25 May 2016
  • PR Newswire (press release)
    PR Newswire (press release) The unique topology of the TPS54A20 SWIFT synchronous DC/DC enables high- operation at up to 5 MHz per phase without special magnetics or compound semiconductors, which designers can use for 8-V to 14-V input
     23 May 2016


Leave Comment

characters left: