Programmable Voltage Feedback Circuit for Dynamic Load Regulation
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Solution Overview
Problem
Existing voltage regulation circuits face challenges in meeting the complex dynamic current requirements of multiple chip blocks with high circuit complexity and cost, requiring a solution that is both low complexity and cost-effective while dynamically adjusting node voltages to increase voltage tolerance ranges.
Innovation Solution
A voltage regulation circuit with a node, voltage regulator, and voltage feedback circuit that includes a switch and control signal, allowing the voltage regulator to dynamically adjust node voltages based on feedback voltages from load states, thereby increasing the voltage tolerance range and simplifying circuit planning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a DVS regulator is used to handle complex dynamic current requirements, then the current requirements can be met, but the circuit complexity increases and PCB layout becomes more difficult
Solution Approach 1:
The voltage regulation system is segmented into multiple independent voltage regulators, each serving specific blocks. This allows the system to handle complex dynamic current requirements through coordinated regulation of multiple simpler units rather than one complex regulator, reducing overall circuit complexity while maintaining adaptability.
Solution Approach 2:
The voltage feedback circuit is designed to be universal and can be configured to regulate voltage for multiple different blocks through programmable control. This multi-functional design allows a single feedback circuit structure to adapt to various current requirements without increasing hardware complexity.
2Reliability
If a single chip monitor is added to control the voltage regulator, then voltage regulation can be achieved, but the circuit cost increases and the solution becomes fixed and unchangeable
Solution Approach 1:
The voltage regulator system uses self-service mechanisms where the feedback circuit monitors and adjusts voltage based on programmed instructions stored in non-volatile memory. This eliminates the need for external single-chip monitors, reducing circuit cost and complexity while maintaining reliable voltage regulation capability.
3Adaptability or versatility
If the circuit structure is changed to add a DVS regulator or find a new chip supplier, then the voltage regulation requirements can be met, but the circuit planning time, complexity and cost increase
Solution Approach 1:
The voltage feedback circuit incorporates dynamic programmability through non-volatile memory, allowing the regulation parameters to be changed after manufacturing. This dynamic configuration capability enables the circuit to meet different voltage regulation specifications without requiring physical circuit changes or re-planning, significantly reducing development time and complexity.
Data Source
AI summary
A voltage regulation circuit includes a node, a voltage regulator, a plurality of load units and a voltage feedback circuit. The node has a node voltage. The voltage regulator is electrically connected to the node. The load units are electrically connected to the voltage regulator via the node. The load units are driven by the node voltage and have at least one load state. The voltage feedback circuit is electrically connected between the voltage regulator and the node. The voltage feedback circuit includes a switch and receives the node voltage and a control signal. The control signal includes the at least one load state. The voltage feedback circuit controls the switch according to the at least one load state of the control signal to output a feedback voltage. The voltage regulator adjusts the node voltage according to the feedback voltage.