Driver Control Circuit for Synchronized High-Voltage Switching
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Solution Overview
Problem
Challenges exist in synchronizing the switching on and off of electrically connected switching elements, particularly at high voltages, due to varying delay times and the need for precise, synchronized control of switching elements in power supplies and plasma systems.
Innovation Solution
A control circuit utilizing parallel-to-serial converters and a processor unit to generate synchronized data streams for drivers, enabling precise control of switching elements through a field programmable gate array (FPGA) with built-in transceivers, allowing for high-frequency signal processing and synchronization of multiple outputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If switching elements are driven individually to compensate for delay time differences, then switching synchronization is improved, but device complexity increases
Solution Approach 1:
The control signal is segmented into multiple parallel data streams, each processed independently through separate parallel-to-serial converters. This allows individual adjustment of delay times for each switching element while maintaining overall synchronization, resolving the contradiction by dividing the control function into manageable segments.
Solution Approach 2:
Parallel-to-serial converters are introduced as intermediary components between the parallel control signals and the serial driver inputs. These converters enable precise timing control and delay adjustment for each switching element, achieving synchronization without requiring complex direct control circuitry.
2Manufacturing precision
If high-frequency signal processing is used for precise switching control, then switching precision is improved, but processing requirements and system complexity increase
Solution Approach 1:
The system uses periodic clock signals to control the parallel-to-serial converters, transforming continuous high-frequency control requirements into discrete periodic sampling. This reduces the processing frequency requirements while maintaining switching precision through synchronized periodic updates of the control signals.
Solution Approach 2:
The patent replaces direct high-frequency electrical signal processing with a digital control approach using parallel-to-serial converters. This substitution allows precise switching control through digital logic and timing circuits rather than requiring analog high-frequency signal manipulation, reducing system complexity.
Data Source
AI summary
A control circuit for at least two drivers is provided. Each of the two drivers is configured to switch on and off electrically driven switching elements that are electrically connected to each other. The control circuit includes a first parallel-to-serial-converter including a first parallel input port and a first serial output-port connectable to a first driver, a second parallel-to-serial-converter including a second parallel input port and a second serial output-port connectable to a second driver, and a processor unit configured to send a first data package stream to the first parallel input port, and send a second data package stream to the second parallel input port. Both the first data package stream and the second data package stream are configured to be converted to serial-data-streams at the first serial output-port and the second serial output-port, respectively. The serial data-streams are configured to control the at least two drivers.