7)Use the following formulas to calculate the efficiency: Efficiency= (Pout/Pin) × 100(%)
Pin = Iin × Vin Pout = Iout × Vout
The following graph shows the efficiency results of the S48SS/S48SR converters measured at different operating points.
(%) | 90 |
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EFFICIENCY | 85 |
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| 80 |
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| 75 |
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| 70 |
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| 65 |
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| 60 |
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| 36Vin |
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| 55 |
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| 48Vin |
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| 75Vin |
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| 50 |
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| 0.5 | 1 | 1.5 | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 |
OUTPUT CURRENT (A)
Appendix A- Evaluation Board Schematic
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| COPPER | SVin+ |
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VIN+ | L1 |
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| VIN+ | VOUT+ |
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| VOUT+ |
| NC |
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| BNC1 |
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| BNC2 |
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C2 |
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| C3 |
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| TRIM | C102 | C103 | C104 | C107 | C108 | C109 | C110 | C105 | C106 |
NC |
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| 68u/100V |
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| C101 | |||||||||
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| NC | NC | NC | NC | NC | NC | NC | NC | 1u/25V 10u/25V | |
VIN- |
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| VIN- | VOUT- |
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| VOUT- |
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| SVin- |
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| J2NC |
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| J3 |
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NC | R1 |
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| R3 |
| VR1 | 0 |
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| SW1 |
| NC |
| 100K |
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| Hi 1 Floating ON/OFF |
| DOWN |
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| NC | 2 |
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| 3 |
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NC | ZD1 |
| SW2 | 2 OFF |
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Low 3 | NC C1 |
| 1 |
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| UP |
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| R2 |
| VR2 | J1NC |
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| NC |
| 100K |
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| J4 |
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| 0 |
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10