Description:80V, 10A Power Amplifier with Low Standby Current, Low quiescent current – 2.6mA, Voltage supply operation – ±10 to ±40V, High output current – 10A PEAK.
Apex Microtechnology recommends a 4-layer PCB with a solid ground plane, and thermal vias under the device to dissipate heat. A heat sink or thermal pad can also be used to improve thermal management.
To ensure reliable operation at high temperatures, Apex recommends derating the output current and voltage, and using a heat sink or thermal pad to keep the junction temperature below 150°C. Additionally, using a thermally conductive material for the PCB and ensuring good airflow can help.
Apex recommends using input capacitance of 10-22uF and output capacitance of 10-47uF, with a low ESR (Equivalent Series Resistance) to minimize voltage ripple and ensure stable operation.
Apex recommends using overvoltage protection (OVP) and overcurrent protection (OCP) circuits to prevent damage to the device. Additionally, using a fuse or current limiting resistor can help protect the device from excessive current.
Apex recommends a slow startup sequence, with a ramp-up time of 10-100ms, to prevent inrush currents and ensure reliable operation. During shutdown, the input voltage should be reduced slowly to prevent voltage spikes.
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PA51M Overview
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