A good PCB layout for the MP8007HGV-Z should prioritize thermal management, with a solid ground plane and thermal vias to dissipate heat. Keep the input and output capacitors close to the IC, and use a star topology for the power traces to minimize noise and EMI.
To ensure stability, make sure to follow the recommended component values and PCB layout guidelines. Additionally, add a 10nF-100nF capacitor in parallel with the output capacitor to improve stability and reduce oscillations.
Although the datasheet specifies a maximum input voltage of 18V, it's recommended to limit the input voltage to 15V to ensure reliable operation and prevent damage to the IC.
The output voltage ripple and noise can be calculated using the formula: ΔVout = (Iout * Rl) / (fsw * Cout), where Iout is the output current, Rl is the inductor resistance, fsw is the switching frequency, and Cout is the output capacitance.
The recommended inductor value is 1.5μH-3.3μH, with a saturation current rating of at least 2A. A shielded inductor with a low DCR (e.g., 10-20mΩ) is recommended to minimize losses and EMI.
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