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OPA521

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SBOS872 – MAY 2018

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9 Power Supply Recommendations

Two power supply pins and two ground pins are available to provide a path for the high currents associated with

driving the low impedance of the AC mains. TI recommends connecting the two supply pins together. Placing a

47-μF to 100-μF bypass capacitor in parallel with a 100-nF capacitor as close to the device as possible is also

recommended. Take care when routing the high-current ground lines on the PCB to avoid voltage drops in the

PCB ground that may vary with changes in load current.