TIDA-00528 Reference Design

Texas Instruments

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

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
  • Supports Bus Voltages between 40 and 400 Volts
  • Current, Voltage and Power Monitor
  • I2C-/SMBUS-compatible interface
  • High accuracy
  • Low cost
Applications
  • Exit, Emergency Lighting
  • Smart Combiner Box
Product Categories
  • Amplifiers

Parts

Part Number Name Companion Part
INA226 INA226 Buy Datasheet
OPA333 OPA333 Buy Datasheet

Bill Of Materials

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Schematic

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Download the schematic for TIDA-00528

Test Data

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Other Documents

Title Updated Type Size (KB)
TIDA-00528 Gerber (CAM File) 15 Dec 2015 ZIP 272
TIDA-00528 Gerber 15 Dec 2015 ZIP 185
TIDA-00528 CAD Files 15 Dec 2015 ZIP 1018
TIDA-00528 PCB 15 Dec 2015 PDF 580
TIDA-00528 Assembly Drawing 15 Dec 2015 PDF 91
TIDA-00528 BOM 15 Dec 2015 PDF 114
TIDA-00528 Schematic 15 Dec 2015 PDF 280