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NC12S0A0V60PNFB Datasheet(PDF) 10 Page - Delta Electronics, Inc. |
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NC12S0A0V60PNFB Datasheet(HTML) 10 Page - Delta Electronics, Inc. |
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10 / 13 page  DS_NC12S60A_01102008 10 Voltage Margin Adjusting Output voltage margin adjusting can be implemented in the NC60A modules by connecting a resistor, R margin-up, from the Trim pin to the ground pin for adjusting voltage a little bit higher. Also, the output voltage can be adjusted lower by connecting a resistor, Rmargin-down, from the Trim pin to the output pin. Figure 34 shows the circuit configuration for output voltage margin adjusting. Figure 34: Circuit configuration for output voltage margining Output Capacitance An external output capacitor is required for stable operation. Reflected Ripple Current and Output Ripple and Noise Measurement The measurement set-up outlined in Test Configuration Figure 35 have been used for both input reflected/terminal ripple current and output voltage ripple and noise measurements on NC series converters. Cs Cin Ltest 1 2 Vin+ DC-DC Converter Cout Ceramic 100nF Tantalum 10uF LOAD Input reflected current measurement point Output voltage ripple noise measurement point Cs=270uF*1 Ltest=1.4uH Cin=270uF*3 Cout=680uF*4 Figure 35: Input Reflected Ripple/Capacitor Ripple Current and Output Voltage Ripple and Noise Measurement Set-Up for NC60A Cout Rmargin-down 0 Vt -SENSE Rmargin-up +SENSE GROUND Rs Vout TRIM THERMAL CONSIDERATION The electrical operating conditions of the NC, namely: ● Input voltage, Vin ● Output voltage, Vo ● Output current, Io Determine how much power is dissipated within the converter. The following parameters further influence the thermal stresses experienced by the converter: ● Ambient temperature ● Air velocity ● Thermal efficiency of the end system application ● Parts mounted on system PCB that may block airflow ● Real airflow characteristics at the converter location In order to simplify the thermal design, a number of thermal de-rating plots are provided. These de-rating graphs show the load current of the NC versus the ambient air temperature and air flow. However, since the thermal performance is heavily dependent upon the final system application, the user needs to ensure the thermal reference point temperatures are kept within the recommended temperature rating. It is recommended that the thermal reference point temperatures are measured using a thermocouple or an IR camera. In order to comply with stringent Delta de-rating criteria, the ambient temperature should never exceed 85℃. Please contact Delta for further support.. The maximum acceptable temperature measured at the thermal reference point is 127℃. This is shown in Figure 36. MODULE AIR FLOW 19 (0.75”) 50.8 (2.0”) FACING PWB PWB AIR VELOCITY AND AMBIENT TEMPERATURE MEASURED BELOW THE MODULE 38 (1.5”) Note: Wind Tunnel Test Setup |
Similar Part No. - NC12S0A0V60PNFB |
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Similar Description - NC12S0A0V60PNFB |
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