尊敬的客户:为给您持续提供一对一优质服务,即日起,元器件订单实付商品金额<300元时,该笔订单按2元/SKU加收服务费,感谢您的关注与支持!
    首页产品索引NCP1255

    NCP1255

    购买收藏
     PWM Controller, Current Mode, for Offline Power Supplies Featuring Peak Power Excursion

    制造商:ON

    中文数据手册

    产品信息

    The NCP1255 is a highly integrated PWM controller capable of delivering a rugged and high performance offline power supply in a SOIC-8 package. With a supply range up to 35 V, the controller hosts a jittered 65-kHz switching circuitry operated in peak current mode control. When the power on the secondary side starts to decrease, the controller automatically folds back its switching frequency down to a minimum level of 26 kHz. As the power further goes down, the part enters skip cycle while freezing the peak current setpoint.
    To help build rugged converters, the controller features several key protective features: a brown-out, a non-dissipative Over Power Protection for a constant maximum output current regardless of the input voltage, two latched over voltage protection inputs 0 either through a dedicated pin or via the Vcc input - and finally, the possibility to externally adjust an auto-recovery timer duration.
    The controller architecture is arranged to authorize a transient peak power excursion when the peak current hits the limit. At this point, the switching frequency is increased from 65 kHz to 130 kHz until the peak requirement disappears. The timer duration is then modulated as the converter crosses a peak power excursion mode (long) or undergoes a short circuit (short).
    • 65kHz operating frequency with 130kHz Frequency Excursion
    • Internal and Adjustable Over Power Protection (OPP) Circuit
    • Adjustable Brown-Out Protection
    • Frequency Foldback down to 26 kHz and Skip-cycle in light load conditions
    • Adjustable Timer-based Auto-recovery Overload/Short-circuit protection with 100% to 25% timer reduction for short-circuit faults
    • Frequency Jittering in Normal and Frequency Foldback Modes
    • Latch Input
    • Double Vcc hiccup in fault mode

    电路图、引脚图和封装图

    在线购买

    型号制造商描述购买
    NCP1255BD65R2GONIC OFF-LINE CNTRLR PWM CM 立即购买
    NCP1255AD65R2GONIC OFF-LINE CNTRLR PWM CM 8SOIC 立即购买
    NCP1255DD65R2GONIC OFF-LINE CNTRLR PWM CM 立即购买
    NCP1255CD65R2GONICOFF-LINECNTRLRPWMCM 立即购买

    技术资料

    标题类型大小(KB)下载
    Current-Mode PWM Controller for Off-line Power SuppliesPDF354 点击下载
    NCP1255, a Controller with Peak Output Power CapabilityPDF338 点击下载
    SOIC-8 Narrow BodyPDF61 点击下载
    NCP1255_PO.PNGUNKNOW7 点击下载
    NCP1255_MS.PNGUNKNOW18 点击下载
    NCP1255_PD.PNGUNKNOW5 点击下载
    NCP1255_AD.PNGUNKNOW40 点击下载
    NCP1255PRNGEVB Bill of Materials ROHS CompliantPDF72 点击下载

    应用案例更多案例

    系列产品索引查看所有产品

    NCV5700NCP1254NCP1034NLSX4373
    NV25512WFNB3W800LNB3L553NSI45020J
    NCV1413NXH80B120H2Q0SGNB3N106KNB3N4666C
    NV25160NC7SP02NTMFS6H800NNV25020
    NCP1397NB100LVEP222NCP1377NCT7491
    Copyright ©2012-2024 hqchip.com.All Rights Reserved 粤ICP备14022951号工商网监认证 工商网监 营业执照