![]() On the output side at summing point B, the ripple current also sums to a steady dc current of 100 A at 12 V output. The first advantage is that each regulator provides only 50 A, reducing the total I 2 R loss by 50.īut more important, for the example given above, the input for each regulator would be a true square wave with a conduction period of 50 of the total cycle.īy phase shifting the drive to the lower section Q1(b) by 180, the current at the input summing point A will be a near-continuous dc current of 50 A at 24 V. However, the 100-A square wave input current would require a huge bank of smoothing capacitors to adequately decouple the large discontinuous input current. This can be easily smoothed with a reasonable-size electrolytic capacitor bank. The output current would have a mean value of 100 A, and typically the triangular ripple current would be 10 (10 A peak-to-peak). ![]() However, the waveforms and transfer functions of the basic buck andor boost regulator are retained in any combination.Īssume we choose to use a buck regulator to deliver 100 A at 12 V from a 24-V supply. Keith Billings Power supply designers should be aware that all switchmode supplies are made up of buck or boost regulators (or combinations of buckboost regulators) with or without dc transformers. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |