Design an AC-DC flyback power supply using an STCH03 controller webinar

Join us for a 1-hour webinar on the new ultra-low standby controller for flyback switched mode power supplies

Tuesday 19th March, 2019

9:00 am CDT (AME) / 3:00 pm CET  (EMEA)
12:00 pm CDT (AME) / 6:00 pm CET (EMEA)

Intended for relative newcomers to the field of power supplies who want an overview of a flyback converter's behavior and its modes of operation, this webinar will show how to design a flyback switched mode power supply using our new STCH03 quasi-resonant PWM controller.

With improved power density, low stand-by power and reliability, even more advance designers will benefit from the integrated features of our new PWM controller; making the design and operation easier, more effective and reliable.

Webinar schedule and registration

This webinar will be broadcast twice, at convenient times for international audiences. Please review the times listed below and register for the most appropriate option for your time zone.

  • EMEA: March 19th, 2019 at 3:00 pm CET or 6:00 pm CET
  • America: March 19th, 2019 at 9:00 am CDT or 12:00 pm CDT

There is no charge to participate in this event, but it is necessary to register through


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  • Overview of how flyback converters operate
  • Features of the STCH03 quasi-resonant PWM controller
  • Selecting the best MOSFETs for high-voltage switches
  • Advantages of secondary-side rectification (or Efficient designs for secondary-side rectification)
  • Using a clamper circuit to place the positive or negative peak in converter applications


Leading ST's Power Application Lab in Prague, Ales LOIDL supports a wide range of customers across EMEA with his deep technical expertise in all power, analog and digital fields.    
A technical expert in the field of power supplies with a focus on low-power SMPS including flyback converters, Jiri SMUTKA works in ST's Power Application Lab in Prague.    

Product details

STCH03 - A compact quasi-resonant PWM controller specifically designed for ultra-low standby power supplies below 10mW. It combines a high-performance low-voltage PWM controller chip and a 650V HV start-up cell in the same package. The device features a unique characteristic: it is capable of providing constant output current (CC) regulation using primary-sensing feedback.

800-1700 V MDmeshTM K5 - Very high voltage super-junction Power MOSFET series. Extremely good RDS(on) at very high BVdss and  high switching speed gives high efficiency with lower design complexity for mainly flyback topologies

FERD - Lower VF x IR than corresponding Schottky diode, smaller chip than Schottky for the same current rating and lower thermal coefficient these new 45V, 60V & 100V structured field-effect rectifier diodes enhance application performance and compactness.