Push-Pull Converter
Connector
Filter Capacitor
Keep DC-Bias and SRF in mind when selecting MLCCs for filtering.
Filter Capacitor
Keep DC-Bias and SRF in mind when selecting MLCCs for filtering.
Differential Mode Filter
Differential mode noise < 30MHz is best attenuated by ferrite chokes. SMD ferrites capable of high inrush currents are a reasonable addition.
Input/Output Capacitors
For lower ESR, aluminum polymer capacitors are recommended for bulk capacitors. Conventional electrolyt capacitors are suitable as well.
Input/Output Capacitors
For lower ESR, aluminum polymer capacitors are recommended for bulk capacitors. Conventional electrolyt capacitors are suitable as well.
Coupling Capacitor
During the off-time of the FET, the entire input current flows through the coupling capacitor. REDEXPERT gives you all the necessary information on temperature rise depending on AC ripple currents.
Common Mode Choke
Isolated SMPS are a main cause of common mode disturbances. For proper electromagnetic compatibility we suggest a Common Mode Choke as input filter.
Transformer with Air Gap
For the flyback topology the transformer has three functions: Transforming the voltage according to its turns ratio, Isolation between primary and secondary windings as well as short-term storage of energy during the off-cycle of the FET. Depending on your application, various winding configurations and mounting options are available.
Custom Solutions Possible
Our engineers are waiting to create a transformer that’s as unique as your application, with personalized details, and a range of options dialed in to exactly what you need.
Power Inductor
REDEXPERT helps you find the best power inductor for your SMPS and provide useful information regarding efficiency and temperature rise.
Simulate all power inductors in REDEXPERT now.
Switch
A higher switching frequency will enable smaller Inductors and smaller filter components. However, radiated EMI might increase.
Schottky Diode
Diode‘s junction capacitance in combination with parasitic inductance of traces can lead to ringing.
Schottky Diode
Diode‘s junction capacitance in combination with parasitic inductance of traces can lead to ringing.
Short Introduction to Push-Pull Converter
The Push-Pull converter is an isolated voltage switching regulator. Depending on the selected winding ratio of the transformer, the output voltage can be higher, lower or equal to the input voltage.
The feedback signal from the isolated output side can be fed back either via a winding of the transformer or through an optocoupler.
The circuit is somewhat more complex, but offers higher efficiency than a flyback converter. A common application is the galvanic isolation of interfaces and sensors.
