Efficiency and cooling
Stabilized DC power supplies

Article REF: E380 V1

Efficiency and cooling
Stabilized DC power supplies

Author : Bernard BOUTOUYRIE

Publication date: May 10, 2002 | Lire en français

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5. Efficiency and cooling

5.1 Efficiency and power dissipation

By definition, efficiency is the ratio of output power to input power: $η = \frac{P_{sortie}}{P_{entrée}}$

The efficiency of a power supply is a very important parameter, as it determines the power dissipated in heat by the power supply, and therefore its temperature rise and MTBF.

Figure 17 shows the power loss diagrams:

P _dissipated...

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Bibliography

In Engineering Techniques

CAILLOT (A.) - Systèmes d'alimentation pour équipements électroniques. - , traité Électronique, 1998.
FOCH (H.), CHÉRON (Y.), ESCAUT (B.), MARTY (P.), METZ (M.) - Alimentations à découpage : introduction. -...

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