Patent ID: 9641169
Date: 2017-05-02
CPC Classifications: H03K

Claim:
1. A circuit for conveying an information from a sender component to a receiver component, wherein the sender component is a high side component and the receiver component is a low side component or wherein the sender component is a low side component and the receiver component is a high side component; wherein the low side component is arranged to drive a first electronic switch of a half bridge and the high side component is arranged to drive a second electronic switch of the half bridge; wherein the circuit comprises a first voltage-decoupling device and a second voltage-decoupling device that are arranged such that a voltage conveyed from the sender component to the receiver component is modulated by the sender component and conveyed across the first voltage-decoupling device and the second voltage-decoupling device depending on the information; wherein the first voltage-decoupling device comprises a first diode and the second voltage-decoupling device comprises a second diode, wherein the information corresponds to a voltage difference modulated across a cathode of the first diode and a cathode of the second diode; wherein the circuit further comprises a first resistor, a second resistor, and a selector switch; wherein the first diode and the first resistor are arranged in series as a first string, wherein an anode of the first diode is connected to the first resistor and wherein the cathode of the first diode is connected via the selector switch either with a first voltage or with a second voltage and wherein an opposite end of the first string is connected to a third voltage; wherein the second diode and the second resistor are arranged in series as a second string, wherein an anode of the second diode is connected to the second resistor and wherein the cathode of the second diode is connected via the selector switch either with the second voltage or with the first voltage and wherein an opposite end of the second string is connected to the third voltage; and wherein the selector switch is arranged to connect in a first state the cathode of the first diode to the second voltage and the cathode of the second diode to the first voltage or in a second state the cathode of the first diode to the first voltage and the cathode of the second diode to the second voltage.