Electronic device including a dual-function DC-to-DC converter
An electronic device, e. g. a measuring transducer, has an interface circuit for communicating with and receiving power from a two-wire line, said interface circuit has a modulator connected to the two-wire line and responsive to an information signal for modulating the current in the two-wire line according to the information signal, and further has a controllable switching type DC-to-DC converter for extracting power for the electronic device from the two-wire line. To reduce energy losses, the DC-to-DC converter is designed to be controlled by said information signal and to perform the function of the modulation means.
1. An electronic device, comprising:
a sensor configured to measure a variable;
an interface circuit for communicating with and receiving power from a remote receiving station through a two-wire line, wherein the interface circuit has
a dual-function controllable switching type DC-to-DC converter connected to the two-wire line and responsive to an information signal indicative of the variable measured by the sensor, wherein the DC-to-DC converter is configured to
modulate current in the two-wire line according to the information signal,
extract power for the electronic device from the remote receiving station through the two-wire line, and
communicate the information signal indicative of the variable measured by the sensor to the remote receiving station through the two-wire line.
2. The electronic device according to claim 1 , wherein the DC-to-DC converter is a Cuk converter.
3. The electronic device according to claim 1 , wherein the DC-to-DC converter is a boost converter.