NCP1203P100

The NCP1203P100 is a pulse width modulation (PWM) controller IC designed for use in low-power offline flyback converters and other switch mode power supply applications. It features a 100 kHz output frequency and a voltage feedforward control to provide stable and efficient power conversion.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

• VDD: Power supply connection
• X: Oscillator frequency setting pin
• FB: Voltage feedback input for regulation
• EN: Enable pin to control the IC operation
• GND: Ground connection
• VCC: Internal supply for control circuitry
• CS: Current sense input
• DRV: Gate driver output

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the NCP1203P100 IC for a visual representation.

Key Features

• Low-Power Offline Flyback Converter Controller: Designed for low-power applications, offering efficient power conversion.
• 100 kHz Output Frequency: Provides a stable output frequency suitable for various power supply designs.
• Voltage Feedforward Control: Ensures stable output regulation across varying input voltages.
• Integrated Gate Driver: Includes a gate driver for external MOSFET control, simplifying the design of power converters.
• Internal Supply Voltage: Features an internal supply (VCC pin) for the control circuitry, reducing the need for external components.

Note: For detailed technical specifications, please refer to the NCP1203P100 datasheet.

Application

• Low-Power Switch Mode Power Supplies: Ideal for use in low-power SMPS designs, including chargers, adapters, and auxiliary power supplies.
• LED Driver: Suitable for driving LED loads in low-power lighting applications.
• Standby Power Supplies: Used in standby and auxiliary power supplies requiring high efficiency and low standby power consumption.

Functionality

The NCP1203P100 is a PWM controller IC designed to regulate power in low-power offline flyback converters and other SMPS designs. It provides stable and efficient power conversion with a focus on low-power applications.

Usage Guide

• Power Supply: Connect the VDD (Pin 1) and VCC (Pin 6) to the power supply voltage.
• Feedback and Control: Use the FB (Pin 3) and EN (Pin 4) pins for voltage feedback and IC operation control, respectively.
• Driver Output: Connect the DRV (Pin 8) to the gate of the external MOSFET for power switching.

Frequently Asked Questions

Q: What is the typical application of the NCP1203P100?
A: The NCP1203P100 is commonly used in low-power offline flyback converters, LED drivers, and standby power supplies for efficient power regulation.

Q: Can the NCP1203P100 operate at frequencies other than 100 kHz?
A: The NCP1203P100 is designed for a 100 kHz output frequency, and for other frequency requirements, alternative PWM controllers may be considered.