Description:30 µA Operating Current at No Load; 75 mV Current Limit Sensing; Capable of 45 V Load Dump; Board Selectable Fixed Output Voltages With Lockout; 2 MHz Operating Frequency with synchronization capability; Adaptive Non−Overlap Circuitry; Integrated Spread Spectrum; Logic level Enable Input Can be Tied Directly to Battery; Short Circuit Protection Pulse Skip; Battery monitoring for UVLO and Overvoltage Protection; Thermal Shutdown (TSD); Adjustable Soft−Start; Individual Enable and Reset pins; QFN Package with
The recommended PCB layout for optimal thermal performance involves using a 2-layer or 4-layer board with a solid ground plane, placing thermal vias under the device, and using a thermal pad on the bottom of the package. A minimum of 2 oz copper thickness is recommended.
To ensure reliable operation in high-temperature environments, it's essential to follow the recommended thermal design guidelines, use a suitable heat sink, and ensure good airflow around the device. Additionally, consider derating the device's power dissipation according to the temperature derating curve provided in the datasheet.
The recommended input capacitor is a 10uF ceramic capacitor with an X7R or X5R dielectric, and the recommended output capacitor is a 22uF ceramic capacitor with an X7R or X5R dielectric. The capacitors should be placed as close to the device as possible to minimize parasitic inductance.
To troubleshoot issues with the device's output voltage regulation, check the input voltage, output load, and feedback resistors. Ensure that the input voltage is within the recommended range, the output load is within the specified current limit, and the feedback resistors are correctly configured. Also, verify that the device is properly soldered and that there are no signs of overheating.
Yes, the NCV891930MW01AR2G can be used in a parallel configuration to increase the output current. However, it's essential to ensure that the devices are properly synchronized and that the output currents are balanced to prevent uneven current sharing. A dedicated parallel configuration circuit may be required to achieve this.
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NCV891930MW01AR2G Overview
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