SL Power Electronics recommends a PCB layout with a solid copper pour on the top and bottom layers, connected to the heat sink pins, to ensure efficient heat dissipation. Additionally, a minimum of 2 oz copper thickness is recommended for the PCB.
While it's possible to use a different input capacitor type, SL Power Electronics strongly recommends using an electrolytic capacitor with a low ESR (Equivalent Series Resistance) to ensure stable operation and minimize voltage ripple. Other capacitor types may not provide the same level of performance and reliability.
To ensure the output voltage is within the specified tolerance, SL Power Electronics recommends using a high-precision voltage reference, such as the TLV431, and adjusting the feedback resistors accordingly. Additionally, the output voltage should be measured at the output pins of the module, rather than at the load, to account for any voltage drops.
The maximum allowable output capacitance for the MINT2270A1976E01 is 2200uF. Exceeding this value may cause instability or oscillation in the output voltage. It's essential to ensure the output capacitance is within the recommended range to maintain reliable operation.
While the MINT2270A1976E01 is rated for operation up to 80°C, SL Power Electronics recommends derating the output power by 1% per degree above 60°C to ensure reliable operation. Additionally, the module should be mounted on a heat sink with a thermal resistance of 1°C/W or better to maintain a safe operating temperature.
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