Carrier Frequency Control in Isolation ICs for Lower Power Modulation
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Solution Overview
Problem
Existing modulation signal generation technologies result in increased power consumption due to continuous output of carrier frequency signals even when they are not needed.
Innovation Solution
A carrier frequency control circuit that detects enabling and disabling periods of an input signal, controlling the carrier frequency generation circuit to stop outputting the carrier frequency signal during disabling periods using timing pulses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the carrier frequency generation circuit continuously outputs the carrier frequency signal, then the modulation circuit can continuously generate modulation signals, but the power consumption of the circuit increases
Solution Approach 1:
The patent implements periodic action by controlling the carrier frequency generation circuit to operate only during enabling periods and stop during disabling periods. The carrier frequency signal is generated periodically based on the input signal state, rather than continuously. This is achieved through the carrier frequency control circuit that receives the input signal and generates control signals to start or stop the carrier frequency generation circuit accordingly, reducing power consumption while maintaining modulation functionality when needed.
2Use of energy by moving object
If the carrier frequency generation circuit stops outputting the carrier frequency signal during disabling periods, then power consumption is reduced, but the modulation signal generation may be interrupted
Solution Approach 1:
The patent implements feedback by having the carrier frequency control circuit continuously monitor the input signal state and adjust the carrier frequency generation circuit operation accordingly. The control circuit receives feedback from the input signal about whether we are in an enabling or disabling period, and dynamically adjusts the carrier signal output to maintain modulation continuity during enabling periods while stopping during disabling periods, thus balancing power consumption and signal continuity.
Data Source
AI summary
The present disclosure provides an isolation integrated circuit, a carrier frequency control circuit and a modulation signal generation method. The isolation integrated circuit includes a carrier frequency generation circuit, a carrier frequency control circuit and a modulation circuit. The carrier frequency generation circuit generates a carrier frequency signal. The carrier frequency control circuit detects enabling periods and disabling periods of an input signal, controls the carrier frequency generation circuit to output the carrier frequency signal during the enabling periods, and controls the carrier frequency generation circuit to stop outputting the carrier frequency signal in the output periods of timing pulses during the disabling periods. The timing pulses are generated in response to detection of entering the disabling periods. The modulation circuit receives the input signal and the carrier frequency signal, and outputs a modulation signal according to the input signal and the carrier frequency signal.