Lemontree

Isolated shunt/voltage measurement reference design for automotive battery pack monitoring

TIPD201

Overview

This TI verified design provides principles, component selection, TINA-TI simulation, verification and measurement performance, Altium schematic, PCB layout for automotive battery pack monitoring applications. This design uses the automotive AEC-Q100 qualified 12-bit, 4-channel, 1Msps SAR ADC ADS7950-Q1 and isolated system hardware.

This isolated input design with four-wire shunt resistors is ideal for such applications using high and low voltage automotive battery packs. It can be used to monitor battery pack current (from -5A to +5A) and extremely high voltages (up to 750V).

TINA simulations on input and reference drivers validate design solutions and component selections, while measured results prove the performance of precision designs.

characteristic

• Isolated sense current (bidirectional): -5A to +5A
• Precision current measurement (calibrated): <0.05%FSR
• Ultra-high battery voltage measurement: DC to 750V
• High voltage measurement (uncalibrated): <0.05%FSR
• Runtime GUI for complete performance analysis of this isolated precision design

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Blockdiagram

Design Files

Documentation

EV/HEV Automotive Battery Pack Monitor Design Guide

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-07-01 11:16:53

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