| 摘要 |
<p>A bus loop power interface (100) is provided according to the invention. The bus loop power interface (100) comprises a voltage control module (110) receiving a loop voltage V<SUB>LOOP</SUB> and generating a predetermined supply voltage V<SUB>SUPPLY</SUB>, an impedance control module (120) coupled to the voltage control module (110), with the impedance control module (120) receiving a loop current I<SUB>LOOP</SUB> and generating a predetermined supply current I<SUB>SUPPLY</SUB>, and a feedback (115) coupled between the voltage control module (110) and the impedance control module (120). The feedback (115) provides a feedback signal to the voltage control module (110) that enables the voltage control module (110) to substantially maintain the predetermined supply voltage V<SUB>SUPPLY</SUB>.</p> |
