SIM100 Ground Fault, Earth Fault Detection Isolation Monitoring IC

SIM100
Insulation Monitor

Sensing

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SIM100 Ground Fault, Earth Fault Detection
Isolation Monitor / Insulation Monitoring / IMD IC

SIM100 IC for ground fault detection insulation monitoring

The Sendyne SIM100 IC is the control IC for high voltage isolation monitoring for EV/HEVs. Using the SIM100 IC, monitoring is possible even when the battery is active, and experiencing large voltage variations. The SIM100 IC continuously monitors the isolation resistance between a vehicle’s IT (Isolated Terra) power system and chassis for deterioration of insulation and potentially dangerous levels of leakage current. The IC utilizes an advanced algorithm developed by Sendyne's modeling team. Designs based on the SIM100 IC are compatible with all relevant standards for EVSE and Charging Stations, including providing two channels for Minimum path detection.

Applications

Electric Vehicles

Charging Stations / CHAdeMO fast charging

Photovoltaics / Solar Panels

Features

Measures voltage for each battery terminal to chassis

Reports battery voltage

Operates normally while the battery is having large voltage excursions and variations

Measures and reports modeled leakage resistances per model adapted by the safety standards ISO6469-1, FMVSS §571.305 and others

Reports calculated isolation resistance in Ω/V per requirements of the safety standards

Measures and reports the value of capacitance from each battery terminal to chassis

Calculates and reports the energy stored by the total capacitance between the battery and chassis

Continuously monitors connections of the voltage sense lines to the battery terminals; reports inadequate connections

Continuously monitors connection of the unit to chassis; reports inadequate connection Provides high immunity to common-mode noise that can be present on the battery terminals

Provides nonvolatile storage for the value of the maximum (design) voltage of the battery (used in calculations of the isolation resistance and stored energy). If the actual observed battery voltage is higher than the set maximum voltage, the higher value is used in the calculations of the isolation resistance and stored energy

Provides nonvolatile storage for calibration of the voltage measurements and other parameters; all reported measurements have their respective calibration parameters applied automatically

Provides built-in galvanically isolated and intrinsically leakage-safe excitation source

A single CAN-interface transaction (packet) provides sufficient information for determination of the safe status of the system

Provides measurement of the internal isolated power supply voltage for system diagnostics

Provides measurement of the module’s temperature for system diagnostics

Utilizes a simple circuit / BOM for easy integration into existing BMS systems

Description

The Sendyne SIM100 is a control IC for high voltage isolation monitoring / insulation monitoring of Electric Vehicles (EV/HEVs) and charging stations. Designs based on the IC are capable of operating correctly even when the battery is active, and experiencing large voltage variations. The SIM100 IC continuously monitors the isolation resistance between a vehicle’s IT (Isolated Terra) power system and chassis for deterioration of insulation and potentially dangerous levels of leakage current.

The SIM100 IC and attendant circuit detects not only resistive leakages but also capacitively stored energy that could be harmful to human operators. Due to a proprietary, patent-pending advanced algorithm, modules utilizing the IC are capable of detecting all sources of leakage, including multiple, simultaneous symmetrical and asymmetrical faults, as well as resistive paths between the chassis and points in the battery with the same potential as the chassis. In the case of an insulation fault, the unit identifies the relative position of the fault in relation to the battery’s terminals. Battery-connected VX1 (Vp) and VX2 (Vn) voltage inputs can measure ±1000 V in reference to Chassis (0 V). Communications are achieved via an isolated CAN 2.0B interface (500 kbit/s or 250 kbit/s), with an input voltage range of 5 V to 53 V, and a wide temperature range of –40 °C to +105 °C. The module was designed to ISO 6469-3:2011-12 / FMVSS 305.

An evaluation kit, including a CAN to USB dongle and cables, and PC software is available. Mimimum quantity order of 2K.

Documentation

SIM100 Product Brief UPDATED May 28, 2019
SIM100 IC Datasheet UPDATED May 28, 2019
SIM100 Safety Manual UPDATED May 14, 2019
SIM100 dbc file UPDATED December 9, 2019
SIM100 3D Step File for the SIM100MOD
SIM100 Quick Start Guide UPDATED Nov. 22, 2017
SIM100 CAN 2.0B Protocol Document UPDATED March 11, 2020
SIM100 YouTube Video

Related White Papers:

Capacitance hazards in e-mobility
Ground fault protection for three phase motors
Safety of unearthed (IT) DC power systems
Insulation Monitoring of DC Charging Stations

Software

Sendyne SIM100SFT Control Software V 1.0.1 -- Click here to download (Updated June 17, 2021)
Visit Sendyne's GitHub site for more software

Ordering

Part number:
SIM1001ASTZA (Tray) (Min. Order 2K)
SIM1001ASTZA (Tape and Reel) (Min. Order 5K)
Related part numbers
SIM100KIT (evaluation kit)
Please contact Sendyne for information on the SIM100 IC.

For more information, including ordering, please contact sensing@sendyne.com.

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Contact

+1 212 966-0600

Company

Technology