Dual-Input Voltage Regulator for Rail Cross-Coupling Prevention
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Solution Overview
Problem
Existing technologies struggle to efficiently switch between battery and charger voltages in off mode, resulting in cross-coupling issues and power consumption inefficiencies.
Innovation Solution
A dual input voltage regulator system that activates and controls the switching between battery and charger voltages in battery mode, utilizing a dual input voltage regulator system to manage the regulation of the output voltage in off mode, and prevents cross-coupling between the battery and charger rails in the output voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both battery and charger voltage regulators are activated simultaneously, then the output voltage can be maintained more reliably, but cross-coupling between voltage rails occurs causing instability
Solution Approach 1:
A control circuit acts as an intermediary between the battery voltage regulator and charger voltage regulator, managing their activation states to prevent cross-coupling while ensuring reliable output voltage maintenance through coordinated operation
Solution Approach 2:
The system dynamically adjusts the activation state of voltage regulators based on real-time conditions, transitioning between simultaneous activation for reliability and selective activation to prevent cross-coupling, thereby adapting to different operational scenarios
2Adaptability or versatility
If voltage regulators switch between battery and charger modes frequently, then the system adapts to changing power sources, but power consumption increases and stability decreases
Solution Approach 1:
The control circuit preliminarily assesses the stability and suitability of available power sources before switching, preventing unnecessary transitions that would increase power consumption and maintain system stability
Solution Approach 2:
The system implements feedback mechanisms to monitor power source characteristics and regulator performance, using this information to make informed switching decisions that balance adaptability with power consumption and stability requirements
3Stability of the object's composition
If the system prevents cross-coupling by decoupling voltage rails, then stability is improved, but the complexity of control circuitry increases
Solution Approach 1:
The control circuit is segmented into distinct functional blocks that independently manage different aspects of regulator coordination and cross-coupling prevention, reducing overall complexity through modular design while maintaining voltage rail stability
Data Source
AI summary
An apparatus for voltage regulation is disclosed. In some implementations, the apparatus includes: a first voltage regulator configured to generate a regulated voltage at an output based on a first supply voltage on a first voltage rail; a second voltage regulator configured to generate the regulated voltage at the output based on a second supply voltage on a second voltage rail; and a control circuit configured to: maintain the first and second voltage regulators generating the regulated voltage at the same time in response to a first condition; and prevent cross-coupling of the second supply voltage to the first voltage rail in response to a second condition.