A good PCB layout for the NCP1618FDR2G should prioritize thermal management, minimize noise coupling, and ensure good power supply decoupling. A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Place the input capacitors close to the VIN pin and the output capacitors close to the VOUT pin. Keep the switching node (SW pin) away from sensitive nodes and use a Kelvin connection for the output voltage sensing.
Choose input capacitors with a low ESR (Equivalent Series Resistance) and a high ripple current rating to minimize voltage drops and ensure stable operation. For the output capacitors, select ones with a low ESR and a high capacitance value to reduce output voltage ripple and improve transient response. The recommended capacitance values are 10uF to 22uF for the input capacitor and 22uF to 47uF for the output capacitor.
The NCP1618FDR2G is rated for operation from -40°C to +125°C ambient temperature. However, the device's performance and reliability may degrade at extreme temperatures. It's recommended to operate the device within a temperature range of -20°C to +85°C for optimal performance and reliability.
The NCP1618FDR2G has a built-in OVP and UVP feature. To implement OVP, connect a resistor divider network from the output voltage to the OVP pin, and to implement UVP, connect a resistor divider network from the input voltage to the UVP pin. The threshold voltage for OVP is 1.2V and for UVP is 0.8V. Adjust the resistor values to set the desired OVP and UVP thresholds.
The recommended soft-start time for the NCP1618FDR2G is 1ms to 5ms. A longer soft-start time can help reduce inrush current and output voltage overshoot during startup. However, a longer soft-start time may also increase the startup time and affect the overall system performance.
Trust Checks
This model has been built in collaboration with the manufacturer.
Manufacturer Collaborated
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored
NCP1618FDR2G Overview
Use the download button to access the NCP1618FDR2G schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like NCP16,
or try a keyword search, such as Switching Regulator or Controllers
