Bourns provides a recommended PCB layout and land pattern in their application notes. It's essential to follow these guidelines to ensure optimal performance, low thermal resistance, and minimal electromagnetic interference (EMI).
To minimize electromagnetic interference (EMI), keep the inductor at least 5 mm away from sensitive components. You can also use shielding techniques, such as copper tape or mu-metal shielding, to contain the magnetic field.
While the datasheet specifies a maximum rated voltage of 100 V, it's essential to derate the voltage to ensure reliable operation. A general rule of thumb is to limit the voltage stress to 80% of the rated voltage, which is 80 V for the MH2029-100Y.
The SRF can be estimated using the formula: SRF ≈ (1 / (2 * π * √(L * C))), where L is the inductance and C is the parasitic capacitance. However, this calculation is an approximation, and the actual SRF may vary. It's recommended to consult the manufacturer's application notes or perform measurements to determine the SRF.
The thermal resistance of the MH2029-100Y is typically around 30-40°C/W. This means that for every watt of power dissipated, the inductor's temperature will rise by 30-40°C. It's essential to consider thermal management and ensure adequate heat dissipation to prevent overheating, which can lead to reduced performance and lifespan.
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