Wolfspeed recommends a 2-layer PCB with a thermal via array under the device to dissipate heat. A minimum of 10 thermal vias with a diameter of 0.3 mm, spaced 1.2 mm apart, is recommended. Additionally, a thermal pad with a minimum size of 10 mm x 10 mm is suggested.
To prevent overheating, ensure the device is operated within the recommended temperature range (TJ = -40°C to 150°C). Implement a thermal management strategy, such as a heat sink or fan, to maintain a junction temperature below 125°C. Monitor the device's temperature using the built-in thermistor (pin 9) and adjust the operating conditions accordingly.
Wolfspeed recommends a gate drive circuit with a low impedance path to the gate terminal. Use a gate resistor (Rg) between 10 Ω to 20 Ω and a gate capacitor (Cg) of 1 nF to 10 nF. Ensure the gate drive circuit is located close to the device and use a low-inductance path to minimize ringing and oscillations.
Handle the device with ESD-protective equipment and follow proper ESD handling procedures. Implement ESD protection circuits, such as TVS diodes or ESD arrays, on the input and output pins. Ensure the device is operated within the recommended voltage and current ratings to prevent EOS.
The built-in thermistor (pin 9) is designed to operate within a temperature range of -40°C to 150°C. The thermistor has a nominal resistance of 10 kΩ at 25°C and follows a standard NTC thermistor curve. Use a 1% to 5% tolerance resistor in series with the thermistor to ensure accurate temperature measurement.
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E3M0032120K Overview
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