You are designing a high power density DC-DC converter with extremely tight board space, yet you need to handle load currents up to 40A. Traditional MOSFETs either have large packages or high conduction losses that overwhelm the thermal system. The VBsemi PSMN7R0-40LS,115-VB is designed to solve this pain point—it integrates 40V withstand voltage, 40A current capability, and an on-resistance of only 4.5mΩ into a compact DFN8(3X3) package, allowing high-current power supply designs to achieve both small size and high efficiency.
- Drain-Source Voltage: 40V, suitable for power systems up to 24V, with sufficient safety margin - Gate Drive Range: ±20V, compatible with 4.5V~12V logic levels, flexible driving - Threshold Voltage: 2.5V, clear switching characteristics, strong noise immunity - On-Resistance: As low as 4.5mΩ (10V drive), only 6mΩ even at 4.5V drive, extremely low loss - Maximum Continuous Drain Current: 40A, small package can handle high current - Trench Technology, excellent figure of merit, combining switching and conduction performance
Domain and module applications：
- **High-power DC-DC Buck Modules** – Used as low-side synchronous rectifier switches, with ultra-low on-resistance to reduce rectification losses and improve conversion efficiency. - **Power Tools/Drone ESCs** – 40A current capability and low on-resistance make motor drives more powerful with lower temperature rise, extending runtime. - **Battery Protection Boards / BMS** – Fast circuit disconnection during overcurrent or short circuit; low conduction voltage drop reduces self-heating of the protection board, enhancing system reliability. - **Server Power Supplies / Telecom Power** – Withstands high current stress in compact board space, suitable for high-density power conversion topologies. - **Automotive Electronic Auxiliary Power** – 40V withstand voltage tolerates automotive voltage fluctuations, providing stable power switching for ECUs, sensors, etc. - **Fast Chargers / Adapters** – Used as switching transistors in PFC or LLC topologies, leveraging low gate charge and low on-resistance for efficient energy conversion. - **Motor Drive / Industrial Control** – Enables precise speed control with PWM; DFN8 package facilitates compact driver design.
**One-sentence Summary: PSMN7R0-40LS,115-VB is not an ordinary MOSFET; it is your "low-resistance weapon" and "space efficiency expert" for 40V high-current power designs.**
* Please note: the above is only an example application scenario, the specific application depends on the requirements and conditions of the system design. When using this device, consult its data sheet for detailed technical specifications and features
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