NAD12S10-A DC-DC Converter Technical Manual V1.1 Designation Explanation NAD 12 1 — Non-isolated, analog, package type 2 — Input voltage: 12 V 3 — Single output 4 — Output current: 10 A EN42PCDG on the label of the module is the 5 —...
NAD12S10-A DC-DC Converter Technical Manual V1.1 Characteristic Curves Conditions: T = 25°C or 77°F, unless otherwise specified. Figure 2: 0.7 V Power dissipation Figure 1: 0.7 V Efficiency Figure 4: 0.8 V Power dissipation Figure 3: 0.8 V Efficiency Figure 6: 0.9 V Power dissipation Figure 5: 0.9 V Efficiency...
Page 7
NAD12S10-A DC-DC Converter Technical Manual V1.1 Characteristic Curves Conditions: T = 25°C or 77°F, unless otherwise specified. Figure 8: 1.0 V Power dissipation Figure 7: 1.0 V Efficiency Figure 10: 1.2 V Power dissipation Figure 9: 1.2 V Efficiency Figure 12: 1.5 V Power dissipation Figure 11: 1.5 V Efficiency...
Page 8
NAD12S10-A DC-DC Converter Technical Manual V1.1 Characteristic Curves Conditions: T = 25°C or 77°F, unless otherwise specified. Figure 14: 1.8 V Power dissipation Figure 13: 1.8 V Efficiency Figure 15: 2.5 V Efficiency Figure 16: 2.5 V Power dissipation Figure 18: 3.3 V Power dissipation Figure 17: 3.3 V Efficiency...
Page 9
NAD12S10-A DC-DC Converter Technical Manual V1.1 Characteristic Curves Conditions: T = 25°C or 77°F, unless otherwise specified. Figure 19: 5.0 V Efficiency Figure 20: 5.0 V Power dissipation Figure 21: 5.3 V Efficiency Figure 22: 5.3 V Power dissipation Figure 24: Thermal derating with airflow from pin1...
Page 10
NAD12S10-A DC-DC Converter Technical Manual V1.1 Characteristic Curves Conditions: T = 25°C or 77°F, unless otherwise specified. Figure 26: Thermal derating with airflow from pin1 Figure 25: Thermal derating with airflow from pin3 to pin5 (V = 12 V; V = 0.8 V)
Page 11
NAD12S10-A DC-DC Converter Technical Manual V1.1 Characteristic Curves Conditions: T = 25°C or 77°F, unless otherwise specified. Figure 32: Thermal derating with airflow from pin1 Figure 31: Thermal derating with airflow from pin3 to pin5 (V = 12 V; V = 1.2 V)
Page 12
NAD12S10-A DC-DC Converter Technical Manual V1.1 Characteristic Curves Conditions: T = 25°C or 77°F, unless otherwise specified. Figure 37: Thermal derating with airflow from pin3 Figure 38: Thermal derating with airflow from pin1 to pin7 (V = 12 V; V = 2.5 V)
Page 13
NAD12S10-A DC-DC Converter Technical Manual V1.1 Characteristic Curves Conditions: T = 25°C or 77°F, unless otherwise specified. Figure 43: Thermal derating with airflow from pin3 Figure 44: Thermal derating with airflow from pin1 to pin7 (V = 12 V; V = 5.3 V)
Page 14
NAD12S10-A DC-DC Converter Technical Manual V1.1 Characteristic Curves Conditions: T = 25°C or 77°F, unless otherwise specified. Air flow Figure 49: Thermal plot with airflow from pin3 to Figure 50: Thermal plot with airflow from pin1 to pin7 (T = 25°C (77°F); Airflow = 1 m/s (200 FLM);...
Page 15
NAD12S10-A DC-DC Converter Technical Manual V1.1 Characteristic Curves Conditions: T = 25°C or 77°F, unless otherwise specified. Air flow Figure 55: Thermal plot with airflow from pin3 to Figure 56: Thermal plot with airflow from pin1 to pin7 (T = 25°C (77°F); Airflow = 1 m/s (200 FLM);...
Page 17
NAD12S10-A DC-DC Converter Technical Manual V1.1 Typical Waveforms Conditions: T = 25°C (77°F), V = 12 V. On/Off On/Off Figure 63: Startup from On/Off Figure 64: Shutdown from On/Off Figure 65: Startup by power on Figure 66: Shutdown by power off...
NAD12S10-A DC-DC Converter Technical Manual V1.1 Remote On/Off The output voltage varies depending on the R trim On/Off Pin Level Status Note that the trim resistor tolerance directly affects the output voltage accuracy. It is Low level recommended to use ±1% trim resistor.
Page 19
NAD12S10-A DC-DC Converter Technical Manual V1.1 Overtemperature Protection Input Undervoltage Protection temperature sensor on the converter senses the The converter will shut down after the input voltage average temperature of the module. It protects the drops below the undervoltage protection threshold converter from being damaged at high temperatures.
NAD12S10-A DC-DC Converter Technical Manual V1.1 Thermal Consideration Thermal Test Point Sufficient airflow should be provided to ensure reliable operating of the converter. Therefore, thermal components are mounted on the converter to dissipate heat to the surrounding environment by conduction, convection and radiation.
The converter is compatible with reflow soldering techniques. No wave soldering and hand soldering is allowed. Figure 74: Recommended reflow profile using lead-free solder HUAWEI TECHNOLOGIES CO., LTD. Huawei Industrial Base Bantian Longgang Shenzhen 518129 People's Republic of China www.huawei.com GLOBAL ENERGY EFFICIENCY SPECIALIST...