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I have the following problem: - Using Wikipedia I find that during CCM we have the relation: - $$\frac{V_{out}}{V_{in}} = -\frac{D}{1-D} $$Solving for $D$ and inserting values gives me $$D...
#2: Post edited
- I have the following problem: -
- >![Image alt text](https://electrical.codidact.com/uploads/5mvBEaX8abL6hiHLuPjPFZYx)
- Using Wikipedia I find that during CCM we have the relation: -
- $$\frac{V_{out}}{V_{in}} = -\frac{D}{1-D} $$
- Solving for \$D\$ and inserting values gives me
- $$D=\frac{20\text{V}}{20\text{V}-24\text{V}} = -5 $$
- But this doesn't seem to make sense. First of all, the duty cycle is negative... Second the duty cycle is **more** than 100%!
Why do I get this erroneous result?
- I have the following problem: -
- >![Image alt text](https://electrical.codidact.com/uploads/5mvBEaX8abL6hiHLuPjPFZYx)
- Using Wikipedia I find that during CCM we have the relation: -
- $$\frac{V_{out}}{V_{in}} = -\frac{D}{1-D} $$
- Solving for \$D\$ and inserting values gives me
- $$D=\frac{20\text{V}}{20\text{V}-24\text{V}} = -5 $$
- But this doesn't seem to make sense. First of all, the duty cycle is negative... Second the duty cycle is **more** than 100%!
- Why do I get this erroneous result?
- **EDIT**
- Turns out I used the wrong formula. Using the formulas given by my instructor for the course: -
- ![Image alt text](https://electrical.codidact.com/uploads/3nvFSVwSiYn4W7JSFVrbzuv5)
- yields \$d=0.454545 \$
#1: Initial revision
Duty cycle of buck-boost converter
I have the following problem: - >![Image alt text](https://electrical.codidact.com/uploads/5mvBEaX8abL6hiHLuPjPFZYx) Using Wikipedia I find that during CCM we have the relation: - $$\frac{V_{out}}{V_{in}} = -\frac{D}{1-D} $$ Solving for \$D\$ and inserting values gives me $$D=\frac{20\text{V}}{20\text{V}-24\text{V}} = -5 $$ But this doesn't seem to make sense. First of all, the duty cycle is negative... Second the duty cycle is **more** than 100%! Why do I get this erroneous result?