SA22900QEQ-Products-Silergy Corp

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SA22900QEQ

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50V, Dual-Phase Stackable Synchronous Boost Controller
    Part numberSA22900QEQ
    Channel(#)2
    Vin (min) (V)5
    Vin (max) (V)50
    TopologyDual-phase boost
    Switching frequency (min)(kHz)50
    Switching frequency (max)(kHz)1100
    Vout (min) (V)5
    Vout2 (min)(V)5
    Vout (max) (V)50
    Vout2 (max )(V)50
    Vref accuracy (±%)1
    Vout accuracy(±%)
    Control modePeak current mode
    Duty cycle (max)(%)90
    Operation modePWM/PFM
    Iq (typ) (uA)3000
    FeaturesSpread spectrum,Input voltage tracking,Programmable dead time,Programmable minimum on time,Selectable phase drop and add
    PackageQFN5×5-32
    Operating temperature range(°C)-40 to 125
    Functional safety category
    • Wide Input/output Voltage Range: 5V to 50V 
    • 1.6V±1% Reference Voltage over -40℃~125 ℃
    • Selectable 1-, 2-, or 4 (Two Devices Paralleled) Interleaved Phase Operation
    • Supports Spread Spectrum Function
    • Power Good Indicator
    • Supports External Synchronization
    • Supports Tracking Function
    • Integrated N-channel MOSFET Drivers: 5V 2A Sourcing/3A Sinking
    • Programmable Frequency Per Phase: 50kHz to 1.1MHz
    • Programmable Dead Time and Minimum Duty Cycle
    • Light Load Operating Mode Selection: PFM or FCCM 
    • Selectable Phase Drop and Phase Add Function
    • Fully Protected for Over Voltage, Over Current and Over-Temperature 
    • Selectable Hiccup or Latch-off Fault Response
    • RoHS Compliant and Halogen Free
    • Compact Package QFN5×5-32 
    • Automotive AEC- Q100 Grade 1 Qualified

     

    The SA22900 is a dual-phase stackable synchronous boost controller. It operates over a wide input voltage range from 5V to 50V and utilizes constant frequency peak current mode control. The SA22900 operates at a switching frequency ranging from 50kHz to 1.1MHz per phase and can be synchronized to an external clock. It supports single-phase, dual-phase, and 4-phase operation to reduce output ripple and capacitance. Additionally, the spread spectrum function can be used to minimize peak emissions, resulting in lower electromagnetic interference (EMI).

    The SA22900 features external soft-start, enable control, and an open-drain power good indicator. It also includes comprehensive protection features, such as cycle-by-cycle overcurrent protection, input overvoltage protection, output overvoltage protection, and thermal shutdown for reliable operation. The fault protection response can be configured for either latch-off or hiccup recovery.

    The SA22900 is available in compact QFN5×5-32 package.

    Evaluation Board

    • 22900-1

      Photo of evaluation board

    • 22900-2

      Photo of evaluation board

    • 22900-3

      Photo of evaluation board

    • 22900-4

      Photo of evaluation board

    • 22900-5

      Photo of evaluation board

    EVB_SA22900QEQ

    The EVB_SA22900QEQ is intended for evaluating 50V, Dual-Phase Stackable Synchronous Boost Controller SA22900QEQ.

    Technical Documentation