Automotive High-Voltage and Isolation Leakage Measurements Reference Design

(ACTIVE) TIDA-01513

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Key Document

Description

The function of this reference design is to monitor the isolation resistance of a high-voltage bus to the chassis ground. Monitoring the isolation strength of coupling devices and components from high voltage to the chassis ground is a necessary feature in HEV’s and EV’s as battery management systems, traction inverters, DC/DC converters, onboard chargers, and other subsystems operate at high voltage (greater than 60 V).

Features
  • Accurate isolaton voltage measurement
  • Accurate leakage current estimation
  • Estimated isolation resistance
  • Accurate high-voltage measurement
  • Scalable to multiple batteries

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Schematic/Block Diagram

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Design Guide

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Design Files

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Bill of Materials (BOM)

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TI Devices (6)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
AMC1301-Q1  Automotive Precision ±250mV-Input 3µs-Delay Reinforced Isolated Amplifier  Special function amplifiers  Sample & Buy View Design Kits & Evaluation Modules
OPA2348-Q1  Automotive 1MHz, 45uA, RRIO, Dual Op Amp  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
OPA320-Q1  Automotive Qualified Precision, Zero-Crossover, 20MHz, 0.9pA Ib, RRIO, CMOS Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
SN6501-Q1  Automotive Low-Noise 350 mA, 410 kHz Transformer Driver   Isolation  Sample & Buy View Design Kits & Evaluation Modules
TL4050B25-Q1  Automotive Catalog Precision Micropower Shunt Voltage Reference  Voltage references  Not Available Not Available
TPS763-Q1  Low-Power 150-mA Low-Dropout Linear Regulators for Automotive  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
OPA2348-Q1 Download Download
OPA320-Q1 Download Download
SN6501-Q1 Download
TL4050B25-Q1 Download Download
Download Download
TPS763-Q1 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 TI Recommends
PDF 799 20 Apr 2018 127
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 476 20 Apr 2018 28
ZIP 780 20 Apr 2018 28
PDF 577 20 Apr 2018 28
PDF 125 20 Apr 2018 29
PDF 65 20 Apr 2018 40
PDF 286 20 Apr 2018 131

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