I^2C 数字隔离器

Low Power, 3.0kV rms/6.0 kV rms

π220N/π221N: AC 3000Vrms;π220W/π221W: AC 6000Vrms




    The π220(N;W)/π221(N;W) devices are low-power bidirectional isolators compatible with the I2C interface and are based on iDivider technology from 2PaiSemi. These devices have logic input and output buffers that are separated by using a silicon dioxide (SiO2) barrier. These devices block high voltages and prevent noise currents from entering the control side ground, avoiding circuit interference and damaging sensitive components.

    The π220(N;W)/π221(N;W) devices are based on iDivider technology with functional, performance, size, and power consumption advantages as compared to optocouplers.

    The π220(N;W) provides two bidirectional channels, supporting a complete isolated I2C interface. The π221(N;W) provides one bidirectional channel and one unidirectional channel for applica- tions where a bidirectional clock is not required. The π221(N;W) is used in applications that have a single master while the π220(N;W) is suitable for multi-master applications.

    These devices feature independent 3.0V to 5.5V supplies on each side of the isolator. These devices operate from DC to 2MHz at ambient temperatures of -40°C to +125°C. 


    Bidirectional I2C communication

    Supports up to 2 MHz operation

    Open-drain interfaces

    Side 1 outputs with 3.5 mA sink current

    Side 2 outputs with 35 mA sink current       

    3.0V to 5.5V supply/logic levels

    High common-mode transient immunity: 75 kV/us typical

    Isolation voltages:

    π220N/221N: AC 3000Vrms

    π220W/221W: AC 6000Vrms

    Safety and regulatory approvals(Pending)

    UL recognition:

    3000Vrms/6000Vrms for 1 minute per UL 1577

    CSA Component Acceptance Notice 5A

    VDE certificate of conformity:

    DIN V VDE V 0884-10 (VDE V 0884-10):2006-12

    VIORM = 565V peak/849V peak

    CQC certification per GB4943.1-2011

    AEC-Q100 (Pending)

    Wide temperature range: -40°C to 125°C

    8/16-lead, RoHS-compliant, (W)SOIC package


    Isolated I2C, SMBus, PMBus interfaces Multilevel I2C interfaces

    Electric and Hybrid-Electric Vehicles

    Open-Drain Networks

    I2C Level Shifting

    Power supplies


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