{"id":10486,"date":"2026-07-20T04:20:15","date_gmt":"2026-07-20T04:20:15","guid":{"rendered":"https:\/\/ic-vendor.com\/ncp1200d100r2g\/"},"modified":"2026-07-20T04:20:15","modified_gmt":"2026-07-20T04:20:15","slug":"ncp1200d100r2g","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/es\/ncp1200d100r2g\/","title":{"rendered":"NCP1200D100R2G"},"content":{"rendered":"

Productos<\/h2>\n

The onsemi NCP1200D100R2G is a PWM current-mode controller designed for low-power universal off-line switch-mode power supplies (SMPS). Housed in an SOIC-8 package, it operates at a fixed switching frequency of 100 kHz and features skip-cycle capability for excellent light-load efficiency, internal leading-edge blanking, and self-supply operation from the DC rail \u2014 eliminating the need for an auxiliary winding.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n
Control Mode<\/td>\nCurrent Mode PWM<\/td>\n<\/tr>\n
Switching Frequency<\/td>\n100 kHz (Fixed)<\/td>\n<\/tr>\n
Peak Drive Current<\/td>\n250 mA Source\/Sink<\/td>\n<\/tr>\n
Supply Voltage (VCC)<\/td>\nSelf-supplied from DC rail<\/td>\n<\/tr>\n
UVLO Threshold<\/td>\n12V (On), 10V (Off)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n
Paquete<\/td>\nSOIC-8<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • No auxiliary winding required \u2014 self-supplied from the DC rail via HV pin<\/li>\n
  • Internal output short-circuit protection<\/li>\n
  • Extremely low no-load standby power consumption<\/li>\n
  • Current-mode control with skip-cycle capability for light-load efficiency<\/li>\n
  • Internal leading-edge blanking (LEB) eliminates need for external filtering<\/li>\n
  • 250 mA peak current source\/sink drive capability<\/li>\n
  • Built-in frequency jittering for reduced EMI<\/li>\n
  • Internal temperature shutdown protection<\/li>\n
  • Pb-Free, Halogen Free\/BFR Free, RoHS compliant<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • AC-DC wall adapters and chargers<\/li>\n
    • Offline battery chargers<\/li>\n
    • Standby power supplies for consumer electronics<\/li>\n
    • Low-cost SMPS for auxiliary power rails<\/li>\n
    • Industrial control auxiliary supplies<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The onsemi NCP1200D100R2G is a PWM current-mode controller designed for low-power universal off-line switch-mode power supplies (SMPS). Housed in an SOIC-8 package, it operates at a fixed switching frequency of 100 kHz and features skip-cycle capability for excellent light-load efficiency, internal leading-edge blanking, and self-supply operation from the DC rail \u2014 eliminating the […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,29],"tags":[1791],"chip_brand":[144],"class_list":["post-10486","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","tag-ncp1200d100r2g","chip_brand-on"],"acf":{"brief_explanation":"PWM current-mode controller, 100kHz fixed, self-supplied, skip-cycle, 250mA drive, SOIC-8","date_code":"","package_case":"SOIC-8 5.0 x 4.0 x 1.5 mm","in_stock":7892,"datasheet":"https:\/\/www.onsemi.com\/pub\/Collateral\/NCP1200-D.PDF","price":"$0.35 @ 2.5ku","product_introduction":"The onsemi NCP1200D100R2G represents a major advance in ultra-compact switch-mode power supply design. Housed in an SOIC-8 package, this PWM current-mode controller allows implementation of a complete offline battery charger or standby SMPS with minimal external components. The device operates at a fixed 100 kHz switching frequency and drives low gate-charge switching devices such as IGBTs or MOSFETs. A key innovation is the self-supply feature \u2014 the IC is powered directly from the DC rail through the HV pin, eliminating the need for an auxiliary winding on the transformer. This ensures operation even under low output voltage or short-circuit conditions. When the output power demand diminishes, the controller automatically enters skip-cycle mode at low peak current, providing excellent light-load efficiency without acoustic noise. Internal leading-edge blanking (LEB) simplifies the current sensing circuit by eliminating the need for external RC filtering.","working_principle":"The NCP1200D100R2G implements current-mode PWM control. The feedback pin (FB) receives the error signal from an optocoupler, which sets the peak current setpoint. The current sense (CS) pin monitors the primary current through a sense resistor. An internal leading-edge blanking circuit suppresses the initial current spike at switch turn-on, eliminating false tripping. The PWM comparator compares the sensed current ramp with the error signal, terminating the switch on-time when the current reaches the setpoint. When the load decreases and the FB voltage falls below a threshold, the controller enters skip-cycle mode \u2014 gating off switching pulses until the output drops enough to require the next burst. This skip-cycle operation occurs at low peak current, avoiding transformer acoustic noise. The HV pin connects to the rectified DC bus through an internal startup current source that charges the VCC capacitor. Once VCC reaches the UVLO threshold, the controller starts switching and maintains VCC through the self-supply mechanism. Internal frequency jittering modulates the switching frequency slightly to spread EMI energy across a wider band.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/td><\/tr>\n
      1<\/td>Adj<\/td>Input<\/td>Skip-cycle peak current adjustment<\/td><\/tr>\n
      2<\/td>FB<\/td>Input<\/td>Feedback input \u2014 accepts optocoupler signal to set peak current<\/td><\/tr>\n
      3<\/td>CS<\/td>Input<\/td>Current sense input \u2014 monitors primary current via sense resistor<\/td><\/tr>\n
      4<\/td>GND<\/td>Power<\/td>IC ground<\/td><\/tr>\n
      5<\/td>Drv<\/td>Output<\/td>Gate drive output \u2014 drives external MOSFET or IGBT<\/td><\/tr>\n
      6<\/td>VCC<\/td>Power<\/td>Supply voltage \u2014 decoupled with external capacitor<\/td><\/tr>\n
      7<\/td>NC<\/td>NC<\/td>No connection<\/td><\/tr>\n
      8<\/td>HV<\/td>Power<\/td>High-voltage input \u2014 connects to DC rail for self-supply startup<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Low-cost AC-DC wall adapters for consumer electronics (5W-15W)<\/li>\n
      • Offline battery chargers for mobile phones and portable devices<\/li>\n
      • Standby power supplies in TVs, set-top boxes, and appliances<\/li>\n
      • Auxiliary power rails in industrial control systems<\/li>\n
      • Smart meter and IoT device power supplies<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>\n
        onsemi<\/td>NCP1200D060R2G<\/td>SOIC-8<\/td>60 kHz frequency variant<\/td><\/tr>\n
        onsemi<\/td>NCP1200D040R2G<\/td>SOIC-8<\/td>40 kHz frequency variant<\/td><\/tr>\n
        Power Integrations<\/td>TNY274PN<\/td>DIP-8<\/td>Integrated MOSFET alternative<\/td><\/tr>\n
        onsemi<\/td>NCP1014AP100G<\/td>SOT-223<\/td>Integrated MOSFET, similar power range<\/td><\/tr>\n
        STMicroelectronics<\/td>VIPer12A<\/td>SO-8<\/td>Integrated MOSFET alternative<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts\/10486","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/comments?post=10486"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts\/10486\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/media?parent=10486"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/categories?post=10486"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/tags?post=10486"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/chip_brand?post=10486"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}