Alternatingly-Switched Parallel Circuit for Conduction Loss Reduction
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Solution Overview
Problem
Power supply circuits in server systems and data centers face challenges in reducing conduction loss due to high power consumption and temperature rise, which affects the reliability and efficiency of processor systems, particularly under low voltage and high current conditions.
Innovation Solution
An alternatingly-switched parallel circuit is introduced, where bridge arms within a power chip are formed to switch on and off alternately, optimizing current flow through metal interconnection layers and reducing conduction loss by fully utilizing metal resources within the chip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional power supply circuits operate under low voltage and high current conditions, then power density increases to meet processor requirements, but conduction loss increases due to metal connection resistance
Solution Approach 1:
The patent divides the power supply circuit into multiple parallel bridge arms (first bridge arm with Q1-Q2, second bridge arm with Q3-Q4) that operate alternately. This segmentation allows current to be distributed across multiple metal connection paths, reducing the current density and conduction loss in each individual path while maintaining the required total power delivery.
Solution Approach 2:
The patent implements alternating switching operation between multiple bridge arms, where the first bridge arm operates during one period and the second bridge arm operates during another period. This periodic action ensures continuous power delivery while allowing metal connections to be utilized more evenly across time, reducing peak current stress and conduction loss.
2Use of energy by moving object
If supply voltage is decreased to meet processor voltage requirements, then power consumption efficiency improves, but conduction loss in metal connections increases proportionally
Solution Approach 1:
The patent combines multiple bridge arms in parallel configuration, where each bridge arm contributes to the total current delivery. By merging the conduction paths of multiple bridge arms, the effective resistance of the metal connection system is reduced, thereby decreasing conduction loss while maintaining the required low voltage operation for power consumption efficiency.
3Stability of the object's composition
If continuous current flow is maintained through metal connections, then power delivery is stable, but conduction loss accumulates continuously
Solution Approach 1:
The patent employs periodic switching between multiple bridge arms, where each arm is activated in alternating periods. This creates a pulsed current flow pattern that maintains stable average power delivery while reducing continuous conduction loss accumulation in metal connections, as different paths are utilized in different time periods.
Data Source
AI summary
The present disclosure provides an alternatingly-switched parallel circuit, an integrated power module and an integrated power package. The alternatingly-switched parallel circuit includes a first bridge arm and a second bridge arm at least partly formed in a chip containing a plurality of first cell groups and a plurality of second cell groups. The plurality of first cell groups are configured to form the first upper bridge-arm switch and the plurality of second cell groups are configured to form the second upper bridge-arm switch, or the plurality of first cell groups are configured to form the first lower bridge-arm switch and the plurality of second cell groups are configured to form the second lower bridge-arm switch. The plurality of first cell groups and the plurality of second cell groups are switched on and off alternatingly.