JAJSHW2A August 2019 – April 2020 DRV425-Q1
PRODUCTION DATA.
In order to measure the field gradient in the busbar, two DRV425-Q1 sensors are placed inside the hole at a well-defined distance by mounting them on opposite sides of a PCB that is inserted in the hole. The measurement range and resolution of this solution depends on the following factors:
Each of these factors can be optimized to create the desired measurement range for a particular application. Measurement ranges of ±250 A to ±1500 A are achievable with this approach. Larger currents are supported with large busbar structures and minimized distance between the two DRV425-Q1 sensors. Use the parameters listed in Table 3 as a starting point of the design.
DESIGN PARAMETER | EXAMPLE VALUE |
---|---|
Current range | Up to ±1500 A |
Supply voltage, VDD | 3.0 V to 5.5 V |
Reference voltage, VREFIN | VDD / 2 |