Part Number: MC33063A Tool/software: I am using MC33063A as a boost circuit. I would like to clarify the conditions under which switching falls into discontinuous mode. Please tell me the conditions inside the IC and the conditions of the external components…
Part Number: MC33063A-Q1 Other Parts Discussed in Thread: MC33063A
Tool/software:
Hi. I have a question about the MC33063A converter. We are using R2 = 18K and R1 = 11K, with a desired Vout of 3.3V; however, we are getting 3.59V when Vin is 24V. The capacitance…
Hi Jeno,
Sorry for the delay, it is hard to give feedback on your schematics, as long as you are following the equations from the datasheet as shown below it should be fine. Although I must say having a transformer at the output would make things complicated…
Part Number: MC33063A Hi
I have a question: The picture below is the circuit in Spec.
1. Does this circuit use a switching frequency of KHz? ?
2 . For the CT mounted on Pin3-4, what is the basis for selecting 1500pF?
3. Formula table in Spec: What is…
Part Number: MC33063A-Q1 Hi team,
Here is the circuit I am using,
When I turned it on R73 was burning. If I reduce the value to 250mohm IC is burning up. And when I connected 1ohm I got 1.2V as output.
What might be the problem? Is the inductor I selected…
Part Number: MC33063A Tool/software: Some questions are as follows: 1. How is the output current derived in a boost circuit? 2. Are Q1 and Q2 in the step-down circuit a composite Darlington structure? 3. May I ask if the input voltage of a similar driving…
Hello Zheng,
It is not possible to specify the cross-over frequency for the device itself. As Haroon had initially indicated, it depends on external components. The cross-over frequency equals to the bandwidth with which the system can follow a transient…