Isolation IC Carrier Frequency Gating for Lower Idle Power
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Solution Overview
Problem
Existing modulation signal generation methods result in increased power consumption due to continuous output of carrier frequency signals during disabling periods of the input signal, leading to inefficiencies in power management.
Innovation Solution
The isolation integrated circuit incorporates a carrier frequency control circuit that detects enabling and disabling periods of the input signal, controlling the carrier frequency generation circuit to output signals during enabling periods and stop outputting during disabling periods, using edge detection and timing pulse generation to adjust output periods accordingly.
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 applies periodic action by controlling the carrier frequency generation circuit to operate intermittently rather than continuously. The control circuit generates timing pulses that periodically enable and disable the carrier frequency signal based on the input signal state. During disabling periods, the carrier frequency generation is stopped, creating a periodic on-off pattern that reduces power consumption while maintaining modulation functionality when needed.
Solution Approach 2:
The patent implements preliminary action through the control circuit that anticipates when the carrier frequency signal will be needed. The edge detection circuit detects transitions in the input signal and generates timing pulses in advance to prepare the carrier frequency generation circuit for enabling or disabling states, ensuring smooth transitions and proper timing without continuous operation.
2Use of energy by moving object
If the carrier frequency generation circuit is stopped during disabling periods, then power consumption is reduced, but the modulation signal generation may be interrupted
Solution Approach 1:
The patent employs feedback mechanisms where the control circuit continuously monitors the input signal state and adjusts the carrier frequency generation accordingly. The edge detection circuit provides feedback about signal transitions, and the control circuit uses this information to generate appropriate timing pulses that enable or disable the carrier frequency signal, ensuring the modulation function is activated only when the input signal requires it.
Solution Approach 2:
The system implements dynamic control by making the carrier frequency generation state variable rather than fixed. The control circuit dynamically switches between enabling and disabling states based on real-time detection of input signal conditions. This dynamic adaptation allows the system to optimize power consumption while maintaining modulation capability when needed, resolving the contradiction between continuous operation and power savings.
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.