onsemi FDP027N08B-F102 N-Channel MOSFET: Datasheet, Application Circuit, and Pinout Configuration

The onsemi FDP027N08B-F102 is a state-of-the-art N-Channel PowerTrench® MOSFET engineered to deliver superior performance in a wide array of power conversion and management applications. This MOSFET is renowned for its exceptionally low on-resistance (RDS(on)) and high switching speed, making it an ideal choice for high-efficiency designs.

Key Datasheet Specifications and Features

A deep dive into the device's datasheet reveals its core electrical characteristics, which are critical for circuit designers:

Drain-Source Voltage (VDS): 80 V

Continuous Drain Current (ID): 70 A at TC = 25°C

On-Resistance (RDS(on)): A remarkably low 2.7 mΩ (max) at VGS = 10 V, ID = 35 A. This low resistance is pivotal for minimizing conduction losses and improving overall system efficiency.

Gate Threshold Voltage (VGS(th)): 2.5 V (max)

Avalanche Energy Rated: This feature enhances the ruggedness and reliability of the device in inductive switching environments where voltage spikes are common.

100% Avalanche Tested: Guarantees consistency and robustness in every unit.

Qualification: The device is AEC-Q101 qualified, making it suitable for demanding automotive applications.

Typical Application Circuit

A common application for the FDP027N08B-F102 is as a high-side or low-side switch in a synchronous buck converter, a topology widely used in DC-DC power supplies for servers, telecom infrastructure, and automotive systems.

In this circuit:

1. The MOSFET is driven by a dedicated PWM controller or a MOSFET driver IC.

2. The driver provides the necessary voltage (typically 10V-12V) to the gate to rapidly turn the device on and off.

3. A bootstrap circuit is often used for the high-side switch to ensure the gate voltage is properly supplied relative to its source pin.

4. The low RDS(on) ensures minimal voltage drop and power dissipation when the switch is on, while the fast switching characteristics reduce switching losses.

5. Proper gate driving is essential; a series gate resistor (e.g., 5-10Ω) is used to dampen ringing and control the switch's rise/fall times.

Pinout Configuration

The FDP027N08B-F102 is offered in a standard, industry-familiar TO-LL (8-Lead) package. The pinout is straightforward:

Pins 1, 2, 3, 6, 7, 8: These are all internally connected to the Drain (D) terminal. This multi-lead design is crucial for minimizing lead inductance and providing an efficient path for high current to flow out of the package.

Pin 4: This is the Gate (G) terminal. It is the input that controls the conductivity between the source and drain.

Pin 5: This is the Source (S) terminal. It is common to the input and output of the switch and is typically connected to ground in a low-side configuration.

ICGOODFIND Summary

The onsemi FDP027N08B-F102 stands out as a premier power MOSFET solution, offering an optimal balance of very low on-resistance, high current handling, and robust avalanche capabilities. Its AEC-Q101 qualification and high efficiency make it exceptionally well-suited for demanding automotive, industrial, and computing applications where reliability and performance are non-negotiable.

Keywords

Power MOSFET, Low RDS(on), AEC-Q101, Synchronous Buck Converter, PowerTrench®