#### adnan012

##### Advanced Member level 1

hi

The following are the design spec of a flyback converter given in the attached file (at page 13).

VIN: 28 V

Output 1: 5 V

Full Load Current: 10 A

Circuit Topology: Flyback, Continuous Mode

Switching Freq, fs: 100 kHz

Desired Duty Cycle: 0.5 at 28V input

Max Ripple Current (delta)lpp: 5 A @ 32V (secondary)

Peak Short-circuit Current: 25A (secondary)

Secondary Inductance, L: 6.8 uH

Max Loss (absolute): 2.0 W

Max Temperature Rise: 40°C

Cooling Method: Natural Convection

I need explanation of the Max Ripple Current, (delta)lpp: 5 A @ 32V (secondary). How ripple currents are defined in flyback converter and on which factors they depend?

The following are the design spec of a flyback converter given in the attached file (at page 13).

VIN: 28 V

Output 1: 5 V

Full Load Current: 10 A

Circuit Topology: Flyback, Continuous Mode

Switching Freq, fs: 100 kHz

Desired Duty Cycle: 0.5 at 28V input

Max Ripple Current (delta)lpp: 5 A @ 32V (secondary)

Peak Short-circuit Current: 25A (secondary)

Secondary Inductance, L: 6.8 uH

Max Loss (absolute): 2.0 W

Max Temperature Rise: 40°C

Cooling Method: Natural Convection

I need explanation of the Max Ripple Current, (delta)lpp: 5 A @ 32V (secondary). How ripple currents are defined in flyback converter and on which factors they depend?