BSC021N08NS5ATMA1

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Full model: BSC021N08NS5ATMA1

Manufacturer: Infineon

Device type: OptiMOS™ Power MOSFET (N-channel)

Package: PG-TDSON-8 (PowerDSO-8 with solderable backside heat sink)

Operating temperature: -55°C ~ +175°C (junction temperature range)

Compliance standards: RoHS, AEC-Q101 (automotive grade qualification)

Drain-source voltage (V_DS): 80V

Continuous drain current (I_D): 120A (@25°C) / 70A (@100°C)

On-resistance (R_DS(on)): 2.1mΩ (typical, @V_GS=10V)

Gate charge (Q_g): 48nC (@V_GS=10V)

Switching loss: E_on=0.45mJ, E_off=0.25mJ (test conditions: V_DD=40V, I_D=60A)

Body diode characteristics: Reverse recovery time (t_rr) = 85ns

Features

   1. Optimized for synchronous rectification in server and desktop100% 

   2. avalanche tested

   3. Superior thermal resistance

   4. N-channel

   5. 175°C rated

   6. Pb-free lead plating; RoHS compliant

   7. Halogen-free according tolEC61249-2-21

Pin Definition (PG-TDSON-8 package)

Typical Application Circuit

   1. 48V Motor Drive Half-Bridge Design

        High-side MOSFET (BSC021N08NS5ATMA1):

             D ────┬─── 48V power supply

                           │

             G ────┴─── PWM drive signal (such as IR2104 driver)

             S ──────── Motor phase line

        Low-side MOSFET (same model):

            D ──────── Motor phase line

            G ──────── PWM drive signal 

            S ──────── GND

   2. Key components:

       - Gate drive resistor: 10Ω (close to MOSFET gate).

       - Bootstrap capacitor: 100nF (high-side drive power supply).

Thermal management design

   1. PCB layout requirements:

       - The backside heat sink pad needs to be connected to a copper foil area of at least 4cm² and filled with multiple heat dissipation vias (diameter ≥ 0.3mm).

       - High current trace width ≥ 5mm (1oz copper thickness, additional tinning is required to carry 70A).

   2. Heat dissipation calculation example:

       - Power consumption P = I²×R = (70A)²×0.0021Ω = 10.3W → Temperature rise ΔT = P×R_thJA = 10.3W×1.5K/W ≈ 15.5K.

The specific data is subject to PDF, and the above content is for reference