Programmable Driver Biasing for Data-Rate-Based Power Scaling
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Solution Overview
Problem
Existing driver circuits face challenges in efficiently managing power consumption based on varying data-rate requirements, leading to either excessive power usage in high-end applications or insufficient power in lower-end applications.
Innovation Solution
A driver circuit with programmable variable resistors that adjust current flow based on data-rate demands, allowing for power consumption to be commensurate with the required data-rate by dynamically controlling the bias magnitude of output transistors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If driver circuits are standardized for high-end applications, then high data-rate performance is achieved, but power consumption becomes excessive for lower-end applications
Solution Approach 1:
The driver circuit incorporates programmable variable resistors that can be dynamically adjusted based on the required data-rate. This allows the circuit to adapt its power consumption characteristics in real-time, switching between high-performance mode for high data-rates and low-power mode for lower data-rates, thereby resolving the contradiction between maintaining high data-rate capability and reducing power consumption for lower-end applications
Solution Approach 2:
The invention changes the resistance parameters of the variable resistors in the driver circuit to optimize performance for different data-rate requirements. By programmably adjusting resistance values, the circuit can be configured to deliver appropriate power levels for specific applications, preventing excessive power consumption in lower-end applications while maintaining the capability for high data-rate operation when needed
2Productivity
If driver circuits are designed for high data-rate performance, then productivity is improved, but power consumption increases
Solution Approach 1:
The driver circuit uses programmable variable resistors that can be dynamically reconfigured based on operational requirements. When high data-rate performance is needed, the resistors are set to provide maximum drive current; when lower data-rates suffice, the resistors are adjusted to reduce power consumption, thus dynamically balancing productivity and power usage
Solution Approach 2:
The driver circuit is designed with multi-functionality to serve both high-end and lower-end applications using the same hardware platform. The programmable variable resistors enable the circuit to universally support a range of data-rate requirements, allowing a single standardized circuit to adapt its power consumption and performance characteristics to match the specific needs of different applications
Data Source
AI summary
One embodiment of the invention includes a driver circuit. The driver circuit comprises an output transistor that is biased to provide an output signal in response to an input signal. The driver circuit also comprises at least one programmable variable resistor configured to provide a bias magnitude of the output transistor that sets a power of the driver circuit to be commensurate with a data-rate of the input signal.