Multi-Power Supply Controller for Voltage Synchronization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional power supply technologies lack a single controller capable of simultaneously driving multiple power converter phases to deliver sufficient power to loads with complex power requirements, leading to the need for asynchronous power converters and potential damage from differing input voltage levels.
Innovation Solution
An apparatus comprising multiple power supplies and a controller that controls connectivity between circuit paths to ensure simultaneous application of the same input voltage level, using switch circuitry to manage voltage levels during startup, shutdown, and operation, even when power supplies operate asynchronously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple asynchronous power converters are used to supply power to high-current loads, then sufficient power delivery capability is achieved, but different input voltage levels may be applied to different input voltage pins of the load causing damage
Solution Approach 1:
A controller is introduced as an intermediary component that monitors voltage levels from multiple power converters and controls switch circuitry to ensure synchronized voltage application. The controller mediates between the asynchronous power converters and the load, preventing direct connection of mismatched voltages to the load pins.
Solution Approach 2:
The controller performs preliminary monitoring of voltage levels before connecting power converter outputs to the load. By detecting when voltage levels are ready and synchronizing the connection timing, the system ensures that voltages are equalized before application to the load, preventing damage from voltage mismatch.
2Device complexity
If conventional power supply monitoring and control techniques are used, then system simplicity is maintained, but they cannot ensure simultaneous application of same input voltage level from different power supplies
Solution Approach 1:
The controller continuously monitors the output voltages of multiple power converters and uses this feedback information to control the switch circuitry. This closed-loop feedback mechanism ensures that voltage levels are kept synchronized without requiring complex synchronization circuitry, maintaining relative simplicity while achieving reliable voltage matching.
Solution Approach 2:
The power converters themselves provide the voltage monitoring capability, and the controller uses this self-provided information to make synchronization decisions. The system leverages the inherent monitoring capabilities of the power converters rather than requiring external complex synchronization equipment.
Data Source
AI summary
An apparatus comprises a first power supply, a second power supply, and a controller. The first power supply supplies a first input voltage to power a first input of a load over a first circuit path. The second power supply supplies a second input voltage to power a second input of the load over a second circuit path. The controller controls connectivity of the first circuit path to the second circuit path as a function of the first input voltage and the second input voltage during at least ramp up or ramp down of either or both of the first input voltage and the second input voltage.