40 V to 400 V Uni-directional Current/Voltage/Power Monitoring Reference Design

(ACTIVE) TIDA-00528

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Description

This verified design can accurately measure current, voltage and power on a bus as high as 400 V using an I2C- or SMBUS-compatible interface. This design is targeted towards industrial applications where there is a need to measure system current accurately with bus voltages greater than 40 Volts such as Solar inverters, HEV/EV systems and Source generation for AC/DC electronic loads and power sources. This is a low cost non-isolated solution for high voltage current monitoring. It uses INA226 and OPA333 along with a 600-V P-FET transistor.

Features

 

• The integrated load-dump protection reduces external voltage clamp cost and size

• Onboard load diagnostics report the status of the speaker through I2C, which reduces external components needed for diagnostic coverage

• TLV320AIC3104-Q1 + TAS5411-Q1 combo allows for reduced power consumption, reduced heat
and reduced peak currents in the electrical system

• TAS5411-Q1 provides up to 8W output power for loud, clear audio in an unpredictable emergency environment

• Additional output from the TLV320AIC3104-Q1 can be used for the head unit or other car audio needs and eliminates the need for another device

• Supports Bus Voltages between 40 and 400 Volts
• Current, Voltage and Power Monitor
• I2C-/SMBUS-compatible interface
• High accuracy
• Low cost

 


View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  



Schematic/Block Diagram

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Design Files

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Bill of Materials (BOM)

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TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
INA226  36V, Bi-Directional, High Accuracy, Low-/High-Side, I2C Out Current/Power Monitor w/Alert  Current sense amplifiers  Sample & Buy View Design Kits & Evaluation Modules
OPA333  1.8V, 17µA, microPower, Precision, Zero-Drift CMOS Op Amp   Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
INA226 Download Download
OPA333 Download Download
Download Download
Download Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views
PDF 1164 13 Mar 2015 62
Selection guides (1)
Title Abstract Type Size (KB) Date Views
PDF 1596 04 Apr 2018 1,563
Design files (7)
Title Abstract Type Size (KB) Date Views
ZIP 272 15 Dec 2015 5
ZIP 185 15 Dec 2015 18
ZIP 1018 15 Dec 2015 18
PDF 580 15 Dec 2015 13
PDF 91 15 Dec 2015 11
PDF 114 15 Dec 2015 23
PDF 280 15 Dec 2015 87

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