Description:Charge Current Control; Adaptive SR with Dual edge Tracking; Green Functions, provide wider PWM mode entry level including PWM disable; Closed Loop Soft-Start; Programmable dead times; Non-ZVS Protection; Wide Operating Frequency (39 kHz ~ 690 kHz); Protection Functions with Auto-Restart - Over-Current Protection (OCP) - Output Short Protection (OSP) - Power Limit by Compensation Cutback (Frequency Shift) - Overload Protection (OLP) with Programmable Shutdown Delay Time - Over-Temperature Protection (OTP);
A good PCB layout for the NCV4390DR2G involves keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing the length of the traces carrying high-frequency signals. Additionally, it's recommended to use a shielded inductor and to keep the switching node (SW) away from sensitive analog circuits.
To ensure the NCV4390DR2G operates within its SOA, monitor the input voltage, output current, and junction temperature. Make sure the input voltage is within the recommended range, the output current is within the maximum rating, and the junction temperature is below the maximum rating of 150°C. Also, ensure proper thermal design and heat sinking to prevent overheating.
The recommended input capacitor type is a low-ESR ceramic capacitor with a value of 10uF to 22uF. The capacitor should be placed close to the VIN pin and have a voltage rating of at least 25V.
To optimize the inductor selection, consider the inductor's saturation current, DC resistance, and core material. Choose an inductor with a saturation current rating higher than the peak current, a low DC resistance to minimize losses, and a core material that can handle the switching frequency. A shielded inductor is recommended to reduce EMI.
The EN (enable) pin is used to enable or disable the converter. When the EN pin is high, the converter is enabled, and when it's low, the converter is disabled. The EN pin can be connected to a logic signal or a voltage source. It's recommended to use a pull-up resistor to ensure the EN pin is high when the converter is enabled.
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NCV4390DR2G Overview
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