Digital Clock Recovery Phase-Locked Loop for Σ Δ Current Sensors

Conference: PCIM Europe digital days 2020 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
07/07/2020 - 07/08/2020 at Deutschland

Proceedings: PCIM Europe digital days 2020

Pages: 8Language: englishTyp: PDF

Krah, Jens Onno; Katz, Malte (TH Köln, Cologne, Germany)

Σ-δ (Σ Δ)-modulation is an analog-to-digital conversion technique in which the analog circuit section becomes very small. The majority of the circuit, as well as the transmission of the measured value, is digital. Digital signal processing offers excellent advantages in terms of implementation. This paper presents a method for digitally recovering the Σ Δ−clock signal from the received bit-stream for drive applications. Σ Δ-modulation with clock recovery reduces the digital current sensor interface to a 1-wire interface, the bit-stream.