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NCP1280 - Active Clamp Voltage Mode PWM Controller

General Description

Application Information This pin is connected to the input voltage of the system.

Key Features

  • such as line UV/OV protection, soft.
  • start, single resistor programmable (high) frequency oscillator, line voltage feedforward, dual mode overcurrent protection and maximum duty cycle control, allow converter optimization at minimal cost. Compared to a traditional forward converter, an NCP1280 based converter can offer significant efficiency improvements and system cost savings. Features.
  • Internal High Voltage Startup Regulator (25 V to 700 V).
  • Dual Control Outputs with.

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Datasheet Details

Part number NCP1280
Manufacturer ON
File Size 211.48 KB
Description Active Clamp Voltage Mode PWM Controller
Datasheet download datasheet NCP1280 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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NCP1280 Active Clamp Voltage Mode PWM Controller for Off-Line Applications The NCP1280 provides a highly integrated solution for off−line power supplies requiring high−efficiency and low parts count. This voltage mode controller provides control outputs for driving a forward converter primary MOSFET and an auxiliary MOSFET for active clamp circuit. The second output with its programmable delay can also be used for driving a synchronous rectifier on the secondary or for asymmetric half bridge circuits. Incorporation of high voltage startup circuitry (with 700 V capability) reduces parts count and system power dissipation.