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SMP402 Datasheet(PDF) 7 Page - Power Integrations, Inc. |
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SMP402 Datasheet(HTML) 7 Page - Power Integrations, Inc. |
7 / 16 page D 1/96 SMP402 7 105 100 020 40 60 80 Input Voltage (VDC) LINE REGULATION 101 ILOAD = 200 mA 102 103 104 Load Current (mA) LOAD REGULATION 105 100 0 100 200 300 400 500 102 VIN = 48 VDC 101 103 104 80 50 30 01 2 Load Power (W) EFFICIENCY vs. OUTPUT POWER 40 60 70 VIN = 24 VDC VIN = 48 VDC VIN = 72 VDC 80 30 020 40 60 80 Input Voltage (VDC) EFFICIENCY vs. INPUT VOLTAGE 50 40 60 70 ILOAD = 200 mA The line and load regulation graphs were measured on the circuit shown in Figure 6. The switching frequency of the power supply was measured at 230 kHz. The maximum output power curve shows General Circuit Operation (cont.) 2.0 020 40 60 80 Input Voltage (VDC) MAXIMUM OUTPUT POWER 0 0.5 1.0 TA = 25°C 1.5 2 0 0 100 200 300 500 Switching Frequency (kHz) OUTPUT POWER vs. FREQUENCY 1 TA = 25°C 400 VIN = 48 VDC Typical Performance Characteristics (Figure 6 Power Supply) the power output capability for a 470 µH output filter inductor (L1). The output power versus frequency curve was generated by characterization of the SMP402 at various frequencies. The curve demonstrates the trade-off between AC and DC power losses within the device. As AC losses rise with frequency, DC losses and output power must be reduced to maintain the same device maximum power dissipation. |
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