alimjoco
Member level 4
Guys,
If a buck converter is operating at FPWM continuous mode, will it still operate if the load current is low in which it can enter discontinuous mode?
Usually we design the inductor needed to be 1/3 of the Iload max in order to have a good trade off between eff and transient response. If i decide to use a lower inductor which has an inductor ripple current of 300mA. Will it operate if I use a load current less than 150mA. I see in the lab that my buck is still regulating at 100mA(still switching) eventhough I used a smaller inductor..I think that should be in discontinuous mode already. Why is that so.? I think i need to monitor the current thorugh the inductor to be sure.
Thanks
If a buck converter is operating at FPWM continuous mode, will it still operate if the load current is low in which it can enter discontinuous mode?
Usually we design the inductor needed to be 1/3 of the Iload max in order to have a good trade off between eff and transient response. If i decide to use a lower inductor which has an inductor ripple current of 300mA. Will it operate if I use a load current less than 150mA. I see in the lab that my buck is still regulating at 100mA(still switching) eventhough I used a smaller inductor..I think that should be in discontinuous mode already. Why is that so.? I think i need to monitor the current thorugh the inductor to be sure.
Thanks