This reference design addresses the design challenges of providing power to the two actuators in a variable displacement A/C compressor. In designing circuits for these two loads, design engineers not only have the challenge of managing different current levels but also have to sense the current accurately to control the actuators and protect the circuits against faults. This reference design is able to surpass all of these challenges using a singular chip. The design guide will walk through all of the key specifications for controlling the variable compressor actuators. Finally it will show the testing of the loads for each of the scenarios discussed and how TI's smart high-side switch portfolio allows robust protection of these automotive loads. The automotive loads tested in this reference design represent a subsection of all of the total loads present on a body control module board. For more information about driving different types of loads see the How To Drive Resistive, Inductive, Capacitive, and Lighting Loads With Smart High Side Switches Application Report.
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Reference design overview and verified performance test data
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | Automotive Load Short Circuit Reliability and Accurate Current Sensing Reference | Dec. 11, 2016 |
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