Reference Design for 1200V Isolated I2C High Side Current Sensing for Solar Combiner Boxes TIDA-01590 (ACTIVE)

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Key Document

Description

This reference design is an isolated high-side current sensing design for a smart combiner box in a grounded or ungrounded system. The current sensing topology enables multichannel, sub ±1% error, isolated current sensing for high-voltage systems up to 1200-VDC, limited by the DC/DC transformer.

Features
  • Isolated high-side current sensing of multiple photovoltaic strings
  • Capable of monitoring current within 1% full scale accuracy
  • Support 1200V isolated current sensing via I2C in smart combiner boxes
  • Option to connect additional INA260 devices to I2C bus

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Design Files

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TI Devices (4)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
INA260  36V, Bi-Dir, High Accuracy, Low-/High-Side, I2C Current/Pwr Monitor w/Integrated 2mΩ Shunt Resistor  Current sense amplifiers  Sample & Buy View Design Kits & Evaluation Modules
ISO7842  5.7-kVrms, 100-Mbps, reinforced 4-channel 2/2 digital isolator  Isolation  Sample & Buy View Design Kits & Evaluation Modules
SN6505A  Low-noise 1-A, 160-kHz transformer driver for isolated power supplies  Isolation  Sample & Buy View Design Kits & Evaluation Modules
TPS709  150-mA 30-V ultra-low-IQ wide-input low-dropout (LDO) regulator with reverse current protection  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
INA260 Download Download
ISO7842 Download Download
SOIC (DWW)| 16 Download Download
SN6505A Download Download
TPS709 Download
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Technical Documents

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Datasheet (1)
Title Type Size (KB) Date
PDF 1150 13 Dec 2016
User guides (2)
Title Type Size (KB) Date
PDF 2210 20 Nov 2017
PDF 1300 11 Oct 2016
Design files (6)
Title Type Size (KB) Date
ZIP 302 20 Nov 2017
ZIP 1101 20 Nov 2017
PDF 751 20 Nov 2017
PDF 411 20 Nov 2017
PDF 63 20 Nov 2017
PDF 321 20 Nov 2017

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