MP18851-A4BGY-P

Isolators - Gate Drivers Overview

The MP18851-A4BGY-P is a dual-channel isolated gate driver from Monolithic Power Systems, utilizing capacitive coupling technology. It features a 16-pin SOIC wide-body package and provides up to 5kV RMS isolation voltage compliant with UL 1577 standards. The device delivers a peak output current of 4A for both sourcing and sinking, ensuring robust drive capability for power switches. It supports an input supply voltage range of 2.8V to 5.5V and an output supply voltage up to 30V. Key electrical characteristics include a typical propagation delay of 50ns and common-mode transient immunity exceeding 100kV/μs. Operating temperatures range from -40°C to +125°C.

Isolators - Gate Drivers Feature Summary

• Integrates two independent gate drivers within a single package, allowing flexible configuration as a half-bridge or dual independent drivers.
• Employs proprietary capacitive isolation technology to achieve high-voltage isolation without magnetic components.
• Provides high common-mode transient immunity to ensure reliable operation in noisy switching environments.
• Includes multiple under-voltage lockout protection options for various power supply configurations.

Isolators - Gate Drivers Applications

• Isolated DC-DC converters
• Inverter circuits
• Motor control systems

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'P' indicates tape-and-reel packaging when ordering. Confirm that the SOIC wide-body variant meets the required 5kV RMS isolation rating for your safety certification needs. Ensure compatibility with the target digital controller's logic levels, as the input range supports 3.3V and 5V interfaces. Cross-reference the UL 1577 certification status if regulatory compliance is mandatory for the end application.

Isolators - Gate Drivers Selection Notes

Select this component when high isolation voltage and fast switching speeds are critical. The 4A peak current drives small to medium-sized MOSFETs efficiently. Consider the 16-pin SOIC WB package for board space constraints while maintaining high isolation ratings. Verify that the system's ground references can accommodate the separate primary and secondary supplies required for the isolated architecture.

Isolators - Gate Drivers Part Context

This part belongs to the MP18851 family of isolated gate drivers designed for high-performance power electronics. MPS utilizes its unique capacitive isolation technology to provide robust signal transmission across isolation barriers. The family offers various packages including narrow-body SOIC, wide-body SOIC, and LGA, catering to different isolation voltage and thermal requirements.

Isolators - Gate Drivers Replacement Considerations

Check for other variants in the MP18851 series such as MP18851-A4BGY-Z for tray packaging or MP18851-A4BGLU-Z for narrow-body packages. Ensure substitute parts maintain the same 5kV RMS isolation rating if using the wide-body form factor. Verify pin-out compatibility before replacing existing designs.