Description:Integrated 700 V MOSFET with RDS(on) of 4.7 Ω; Current-Mode Fixed Frequency Operation (65 & 100 kHz) - 130 kHz for B version only; Peak Current: NCP1076A/B = 650mA and NCP1077A/B = 800 mA; Skip-Cycle Operation at Low Peak Current; Dynamic Self-Supply (DSS); Auto-Recovery Output Short Circuit Protection with Timer-Based Detection; Frequency Foldback Operation; 300 µA No Load Power Consumption; Frequency Jittering (including during frequency foldback mode); Adjustable Brown-out Protection and OVP; Over Power
The recommended PCB layout for optimal thermal performance involves placing the device on a thermal pad connected to a large copper area on the PCB, and ensuring good thermal conduction to the surrounding air. A minimum of 2oz copper thickness is recommended. Refer to the onsemi application note AND8327/D for more details.
To ensure reliable startup, ensure that the input voltage rises monotonically and does not droop during startup. Also, ensure that the output capacitor is properly sized to handle the inrush current during startup. A soft-start circuit can also be implemented to reduce the inrush current.
The maximum allowed input voltage ripple for the NCP1077AAP065G is 10% of the nominal input voltage. Exceeding this limit may affect the device's performance and reliability.
While it is possible to use a different inductor value, it is not recommended as it may affect the device's performance and stability. The recommended inductor value is carefully selected to ensure optimal performance and efficiency. If a different inductor value is used, ensure that it meets the minimum inductance and current rating requirements specified in the datasheet.
To troubleshoot oscillations or instability, check the PCB layout for any potential noise coupling or resonance issues. Ensure that the input and output capacitors are properly sized and placed. Also, check the inductor value and ensure that it meets the minimum inductance and current rating requirements. If the issue persists, consult the onsemi application note AND8327/D for more troubleshooting tips.
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
NCP1077AAP065G Overview
Use the download button to access the NCP1077AAP065G schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like NCP10,
or try a keyword search, such as Switching Regulator or Controllers
