Parallel High-Side Driver Channels for Variable Load Currents
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Solution Overview
Problem
Existing high-side drivers require a large number of integrated circuits to manage loads with different current requirements, leading to increased occupied areas and circuitry complexity.
Innovation Solution
A high-side driver apparatus with a plurality of channels configured to drive loads, a control module to generate channel control signals, an electronic fuse to monitor channel parameters, and a parallel-mode block to define sets of channels for parallel operation, reducing the number of drivers needed while maintaining robustness and compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate high-side drivers are integrated to manage loads with different current requirements, then compatibility with various loads is improved, but occupied area and circuitry complexity increase
Solution Approach 1:
The patent implements a universal high-side driver architecture where a single driver circuit can operate in multiple modes (single-channel mode and parallel-mode) to accommodate different current requirements. The parallel-mode block enables the driver to configure channels in parallel to handle higher current loads, eliminating the need for multiple separate drivers and reducing occupied area while maintaining versatility.
Solution Approach 2:
The driver apparatus dynamically reconfigures its channel configuration based on load requirements. The parallel-mode block allows channels to be dynamically switched between independent operation and parallel operation, enabling the system to adapt its current handling capability in real-time without requiring multiple fixed-configuration drivers.
2Adaptability or versatility
If multiple separate high-side drivers are integrated to manage loads with different current requirements, then compatibility with various loads is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal high-side driver architecture where a single driver circuit can operate in multiple modes (single-channel mode and parallel-mode) to accommodate different current requirements. The parallel-mode block enables the driver to configure channels in parallel to handle higher current loads, eliminating the need for multiple separate drivers and reducing occupied area while maintaining versatility.
Solution Approach 2:
The patent merges multiple channel configurations into a single integrated driver apparatus. By combining single-channel operation and parallel-mode operation within one device, the patent reduces the overall number of separate driver circuits needed, thereby simplifying the total circuitry while maintaining the ability to handle various current requirements.
3Power
If channels are configured to operate in parallel to drive high-current loads, then current capability is improved, but control synchronization becomes more difficult
Solution Approach 1:
The patent implements feedback mechanisms within the parallel-mode block to monitor and synchronize the operation of channels operating in parallel. By continuously monitoring channel states and providing feedback control signals, the system maintains precise synchronization of parallel channels, ensuring coordinated operation even at high current levels without requiring overly complex external synchronization circuitry.
Data Source
AI summary
Disclosed is an apparatus including a plurality of channels that drive one or more electrical loads and a control module that generates control signals to operate at least one channel in the plurality of channels, an electronic fuse that monitors one or more operating parameter in a respective channel and detects anomalous conditions in that channel based on the parameter(s) monitored, and a parallel-mode block that defines one or more sets of channels including two or more channels configured to drive a same load. The control module receives from the parallel-mode block parallel-mode management control signals and operates the channels in the set of channels based on parallel-mode management control signals received by the parallel-mode block. The electronic fuse makes the channels in the set of channels non-conductive in response to an anomalous condition detected even in just one channel in the set.