High Voltage 12 V – 400 V DC Current Sense Reference Design
Description
This Verified Design shows a circuit to measure currents with a common mode of up to 400V using an INA138. This is achieved by creating a simple floating power supply and biasing the INA138 directly from the high voltage source. The 400V in this design is an example. With different components even higher common mode voltages can be achieved. This circuit is tested and includes gerber files: test results and a detailed description of functionality.
Features
- Very high common mode voltage range (12V to 400V)36V CMRRSmall solution size (only 4 additional components)
Applications
- Solar power optimizer
- HVAC controller
- Central inverter
- Position sensor
- Power conversion system (PCS)
- Solar charge controller
- Rapid shutdown
- HVAC motor control
Product Categories
- Amplifiers
| Download the bill of materials for TIDA-00332 | Download |
Design File
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Download the design file for TIDA-00332Test Data
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Download the test file for TIDA-00332| Title | Updated | Type | Size (KB) | |
|---|---|---|---|---|
| TIDA-00332 Gerber | 09 Mar 2015 | ZIP | 1150 | |
| TIDA-00332 BOM | 09 Mar 2015 | 47 | ||
| TIDA-00332 Schematic | 09 Mar 2015 | 148 |