High-Side Driver Parallel Channels With E-Fuse Load Protection
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Solution Overview
Problem
Existing high-side drivers require multiple integrated circuits to manage loads with different current requirements, leading to increased occupied area 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 for monitoring channel parameters, and a parallel-mode block to define sets of channels driving the same load, allowing for reduced component count and increased versatility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple integrated circuits are used 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 combines multiple high-side driver channels into a single integrated circuit device. The driver apparatus includes multiple channels (e.g., first channel, second channel, third channel, fourth channel) that can be selectively activated to drive different loads with varying current requirements, eliminating the need for multiple separate integrated circuits and reducing occupied area.
Solution Approach 2:
The integrated circuit is designed with multi-functional capability to handle different load types and current requirements through its multiple channels. Each channel can be independently configured and controlled, allowing a single device to replace multiple specialized circuits while maintaining compatibility with diverse loads.
2Adaptability or versatility
If multiple integrated circuits are used to manage loads with different current requirements, then compatibility with various loads is improved, but circuitry complexity increases
Solution Approach 1:
The patent integrates multiple driver channels, control logic, and protection circuits into a single unified device. This consolidation reduces the overall system complexity by eliminating the need to manage multiple separate integrated circuits and their interconnections, while still providing the capability to drive different load types.
Solution Approach 2:
The single integrated circuit incorporates universal control and protection mechanisms that can accommodate different load requirements. The device includes features such as electronic fuses, thermal protection, and configurable channel operations that provide adaptability without requiring separate specialized circuits for each load type.
3Power
If channels are operated in parallel to drive the same load, then current capability is improved, but risk of unbalanced current distribution and overheating increases
Solution Approach 1:
The patent incorporates electronic fuse circuits and protection logic that monitor the operation of parallel channels and provide feedback control. The system includes thermal protection mechanisms and current balancing logic that detect unbalanced conditions and adjust channel operation to maintain reliable current distribution, preventing overheating and ensuring safe parallel operation.
Data Source
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AI summary
Embodiments of a driver apparatus (20) for use in automotive power distribution applications featuring different current loads, for instance, comprise a plurality of channels (CH) configured to drive one or more electrical loads and a control module (1008) configured to generate control signals to operate at least one channel in the plurality of channels (CH). The driver apparatus (20) as disclosed comprises an electronic fuse (200) configured to monitor one or more operating parameter in a respective channel (CH) and to detect anomalous conditions in that channel based on the parameter(s) monitored plus a parallel-mode block (202) configured to define one or more sets of channels including two or more channels configured to drive a same load. The control module (1008) is configured to receive from the parallel-mode block (202) parallel-mode management control signals and to operate the channels in the set of channels based on parallel-mode management control signals received by the parallel-mode block (202). The electronic fuse (200) is configured to make the channels in the set of channels non-conductive in response to an anomalous condition detected even in just one channel in the set.