Abstract
Differential remote sensing has been popularly used in voltage regulator (VR) design for many years to ensure a high regulation accuracy requirement for processor supply voltage. One new remote sensing method by using normal VR controller is proposed in this paper to achieve similar high regulation accuracy as that by using true differential remote sensing method for output voltage. Working principles of the proposed method are analyzed in detail for normal VR controller with individual ground and combined ground, respectively. Advantages, design considerations, and application constraints for it are analyzed in detail as well. Finally, test is conducted for normal VR controllers with individual ground and combined ground to verify its effectiveness.
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