-48V Telecom Current/Voltage/Power Sense with Isolation
TIDA-00313
(ACTIVE)
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Description
This verified design can accurately measure current, voltage and power on a bus that carries -48V and is able to provide this data using an I²C compatible interface. This design is targeted for Telecom applications because the most common Telecom equipment’s are fed with this negative supply voltage. It uses INA226 and ISO1541. The INA226 is a current shunt and power monitor with an I²C compatible interface. This device will precisely take these measurements and will use ISO1541 to translate the negative voltage to ground referenced signals. The ISO1541 is a low-power, bidirectional I²C compatible isolator.
Features
- Ability to report current, voltage and power on a bus that carries -48V
- High Accuracy:
- 10µV Offset (Max)
- 0.1% Gain Error (Max)
- I²C compatible interface
- Isolation friendly for board to board communication
- I²C compatible isolation translates -48V reference to ground referenced signals
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Schematic/Block Diagram
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Test Data
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TI Devices (2)
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CAD/CAE symbols
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Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Step 3: Open the .bxl file with the Ultra Librarian software.
You can always access the complete CAD/CAE Symbols database at http://webench.ti.com/cad/
Both PCB footprints and schematic symbols are available for download in a vendor neutral format, which can then be exported to the leading EDA CAD/CAE design tools using the Ultra Librarian Reader. The reader is available as a (free download.).
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Technical Documents
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User guides (1)
| Title | Type | Size (KB) | Date |
| | PDF | 975 |
28 Sep 2017
|
Design files (4)
| | ZIP | 833 |
23 Sep 2014
|
| | ZIP | 1053 |
23 Sep 2014
|
| | PDF | 253 |
23 Sep 2014
|
| | PDF | 120 |
23 Sep 2014
|
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