MP18021HN-A-LF

Overview

The MP18021HN-A-LF is a high-frequency half-bridge gate driver designed for N-channel power MOSFETs. It operates with a supply voltage range of 9 V to 18 V and supports a VBST voltage up to 100 V. The device features independent high-side and low-side drive channels with matched propagation delays of less than 5 ns. Typical switching performance includes a rise time of 12 ns and a fall time of 9 ns when driving a 1 nF load at 12 V. It delivers an output current of 2.5 A and maintains a static current below 150 μA. The component functions within a temperature range of -40 °C to +125 °C and is housed in an SOIC-EP-8 package.

Feature Summary

• Independent control of high-side and low-side drive channels with integrated bootstrap diode
• TTL-compatible input logic for direct interfacing with standard digital controllers
• Under-voltage lockout protection on both high-side and low-side supplies to force outputs low

Applications

• High-frequency DC-DC converter topologies requiring isolated gate drive
• Motor control systems utilizing N-channel MOSFET half-bridge configurations
• Industrial power supplies and inverters operating within specified voltage limits

Procurement Notes

Verify the specific suffix 'A' against official Monolithic Power Systems documentation, as standard listings typically reference 'MP18021HN-LF-P'. Confirm that the 'A' variant does not indicate a restricted or obsolete status. Ensure the SOIC-EP-8 package thermal pad requirements are met during assembly. Cross-reference the datasheet revision date to confirm parameter stability before finalizing procurement specifications.

Selection Notes

Select this component for applications requiring precise timing alignment between half-bridge legs due to its sub-5 ns matched delay specification. The integrated bootstrap diode simplifies circuit design by reducing external component count. Ensure the application voltage remains within the 9 V to 18 V supply range and that the high-side floating voltage does not exceed the 100 V limit. Consider the 2.5 A peak drive current capability relative to the target MOSFET gate charge requirements.

Part Context

This part belongs to the MP18021 series of high-frequency half-bridge gate drivers from Monolithic Power Systems. The series is characterized by its ability to drive N-channel MOSFETs efficiently while maintaining tight propagation delay matching. It serves as a critical interface component in power conversion stages where switching speed and reliability are paramount.

Replacement Considerations

Publicly confirmed substitute part numbers for the MP18021HN-A-LF are not available in the provided source material. Verify compatibility with alternative drivers based on pin-out, voltage ratings, and delay specifications if substitution is required.