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SYT664RGC

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High Current Over Voltage Protection Switch with High Current Bi-directional DC/DC Regulator And Capacitance Measurement
Datasheet
SYT664RGC High Current Over Voltage Protection Switch with High Current Bi-directional DC/DC Regulator And Capacitance Measurement Datasheet
    Part numberSYT664RGC
    Vin (min) (V)2.6
    Vin (max) (V)16
    Channel(#)1
    ApplicationSSD
    FeaturesInput-side reverse blocking switch Bi-directional DC/DC regulator, I2C interface
    PackageQFN4×4-25
    • Low RDS(ON) for Internal Switches 
        - Input Reverse Blocking Switch: 24mΩ (Typical)
        - High-side and Low-side Switches of Bi-directional DC/DC Regulator: 70mΩ /70mΩ (Typical)
        - Disconnect Switch: 40mΩ (Typical)
    • 2.6V-16V Input Voltage Range
    • Storage Voltage Rating Up to 36V
    • Programmable Input Current Limit from 1.2A to 6.2A
    • Selectable Over Voltage Protection: 3.8V, 5.7V, and 13.3V
    • Reverse Blocking at Input Side to Prevent From Leakage Current
    • Programmable Reverse Blocking Switch Turn On Delay Time
    • Programmable Reverse Blocking Switch Soft-start Time
    • Integrated High-efficiency Bi-directional DC/DC Regulator: Boost Charging Mode and Buck Discharging Mode Auto-alternating According to the Programmed BUS Voltage Detection and Regulation Level
    • Programmable Quasi-Fixed Frequency Constant OFF Time Control for Steady-State Operation
    • Programmable Boost Charging Peak Current and Adaptive Charging Current Fold-back
    • Programmable Storage Voltage
    • MTP(Multi-Times Programming) Available for Control Parameters Programming by I2C
    • Short-circuit Protection at Energy Storage Side
    • Storage Capacitance Measurement and Abnormal ESR Detection
    • Enable Control
    • RoHS Compliant and Halogen Free
    • Compact Package: QFN4×4-25

    The SYT664 is a power management IC for the applications of power backup in Solid-State Driver or other backup power supplies which can achieve backup power storage and release functions. The energy is transferred bi-directionally between the BUS side and the energy storage side with high efficiency by bi-directional DC/DC regulator. Fast transient response and excellent stability are achieved by the quasi-fixed frequency constant off time control strategy. 

    A reverse blocking switch is integrated at the input side to prevent from energy leaking when the input power source is removed or inserted with inverse polarity. The reverse blocking switch also has the programmable current limit function with the program range from 1.2A to 6.2A. Three different BUS over voltage protection (OVP) thresholds are selectable by OVP pin for the applications with different kind of input power source.

    I2C interface is internally integrated in SYT664 to reduce the amount of external components. Control parameters such as input current limit, switching frequency, and boost peak current limit can be programmed by I2C.

    Storage capacitance measurement and abnormal storage capacitor ESR detection circuit are integrated inside of SYT664. The measurement results are stored in internal read only data registers for MCU reading by I2C interface.

    The SYT664 along with QFN4×4-25 package provides compact PCB layout to save circuit area for the increase of SSD memory capacity.

    Evaluation Board

    • SYT664_1

      Photo of evaluation board

    • SYT664_2

      Photo of evaluation board

    • SYT664_3

      Photo of evaluation board

    EVB_SYT664RGC

    The EVB_SYT664RGC is intended for evaluating high current overoltage protection switch with high current Bi-directional DC/DC regulator snd capacitance measurement.

    Technical Documentation