Does the boost circuit operate in continuous mode or discontinuous mode?

Knight97538

Does the boost circuit operate in continuous mode or discontinuous mode? [Copy link]

Please advise, the following BOOST circuit boosts the voltage from 20V - 30VDC to 100VDC, 0.28A.

Does this circuit work in continuous mode or discontinuous mode?

maychang

[Excuse me, does this circuit work in continuous mode or discontinuous mode? ]

It may work in continuous mode or discontinuous mode. This cannot be seen from the electrical schematic.

beyond_笑谈

Whether the working mode is continuous or discontinuous cannot be determined by the schematic diagram. Either actual test or circuit simulation

tagetage

Your circuit diagram does not clearly show the model number.

hjh0512

The current here is small. What is this circuit for? Why is the current so small?

Knight97538

tagetage posted on 2024-6-12 17:22 The model is not clear in your circuit diagram,,,,

Does the specific operating mode matter? Does the size of the inductor selected matter?

tagetage

Knight97538 posted on 2024-6-13 13:12 Does the specific working mode matter if it is a choice or not?

This time I can see the model of your chip clearly.

I don't know what mode your circuit is working in.

But what is certain is that

In a boost circuit, choosing the right inductor value is usually used to limit the ripple current flowing through it.

The ripple current of the inductor is proportional to the input voltage and the MOSFET on-time, and inversely proportional to the inductance. The size of the inductance determines the operating point of the continuous mode and the discontinuous mode .