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3
questions
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1
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Efficiency curve of synchronous DC-DC controller with external MOSFETs
I'm designing a 48V to 12V, 300W buck converter. I am considering using the LM5148 controller and NTMFSC004N08MC switches. I'm confused about how synchronous DC-DC controllers can list efficiency ...
- 198
2
votes
5
answers
276
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I calculated the power loss of a switching regulator and it doesn't match the datasheet. Am I missing something?
I'm trying to figure out how On Semi's LM2575D2T-5G is only 77% efficient. It's the fixed 5 V output version of the component.
The datasheet gives Vin = 12 V and Iload = 1 A. Based on this, power in = ...
- 21
2
votes
2
answers
152
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Advantages of consequent buck converters
Lets assume we have a 12V source (i.e. an external PSU). We need to go down to 1V8 to supply some load. Leaving the costs behind and using only synchronous buck converters, what are the advantages and ...
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