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NCP1250BP65G
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NCP1250BP65G

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High voltage power supply controller - Designed for offline flyback converters - Provides precise regulation of output voltage and current - Offers protection features for overvoltage, overcurrent, and overtemperature conditions

Package: DIP-8 (Dual In-line Package)

Essence: The NCP1250BP65G is a highly efficient power management IC used in offline flyback converters. It ensures accurate regulation of output voltage and current while providing protection against various fault conditions.

Packaging/Quantity: The NCP1250BP65G is typically packaged in reels or tubes, with a quantity of 2500 units per reel or tube.

Specifications

  • Input Voltage Range: 85V to 265V AC
  • Output Voltage Range: 5V to 24V DC
  • Maximum Output Power: 65W
  • Operating Frequency: 60kHz to 100kHz
  • Standby Power Consumption: <100mW
  • Efficiency: Up to 90%
  • Protection Features: Overvoltage, Overcurrent, Overtemperature

Detailed Pin Configuration

The NCP1250BP65G has the following pin configuration:

  1. VCC - Power Supply Voltage
  2. GND - Ground
  3. FB - Feedback Pin for Output Voltage Regulation
  4. COMP - Compensation Pin for Loop Stability
  5. CS - Current Sense Pin
  6. SS - Soft-Start Pin
  7. DRV - Gate Driver Output
  8. HV - High-Voltage Pin for Power Supply

Functional Features

  • Precise regulation of output voltage and current
  • High efficiency operation
  • Low standby power consumption
  • Protection against overvoltage, overcurrent, and overtemperature conditions
  • Soft-start function for smooth startup
  • Integrated gate driver for driving external power MOSFET

Advantages and Disadvantages

Advantages: - High efficiency operation leads to energy savings - Comprehensive protection features ensure system reliability - Compact DIP-8 package allows for easy integration into various applications - Soft-start function prevents excessive inrush current during startup

Disadvantages: - Limited output power of 65W may not be suitable for high-power applications - Requires external components for complete power supply design

Working Principles

The NCP1250BP65G operates as a high voltage power supply controller for offline flyback converters. It uses a fixed frequency PWM control scheme to regulate the output voltage and current. The IC incorporates various protection features to safeguard against fault conditions, ensuring safe and reliable operation.

Detailed Application Field Plans

The NCP1250BP65G is commonly used in the following applications:

  1. AC-DC power supplies for consumer electronics
  2. LED lighting drivers
  3. Battery chargers
  4. Industrial power systems
  5. Home appliances

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the NCP1250BP65G are:

  1. NCP1250BDR2G by ON Semiconductor
  2. FAN7602B by Fairchild Semiconductor
  3. TNY274PN by Power Integrations
  4. UC3842B by Texas Instruments
  5. LNK304GN by Power Integrations

These alternative models offer similar functionality and can be used as replacements depending on specific application requirements.

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Перелічіть 10 типових запитань і відповідей, пов’язаних із застосуванням NCP1250BP65G у технічних рішеннях

Sure! Here are 10 common questions and answers related to the application of NCP1250BP65G in technical solutions:

  1. Q: What is NCP1250BP65G? A: NCP1250BP65G is a highly integrated PWM controller IC designed for offline flyback converters.

  2. Q: What is the input voltage range supported by NCP1250BP65G? A: The input voltage range supported by NCP1250BP65G is typically between 85V and 265V AC.

  3. Q: What is the maximum output power that can be achieved using NCP1250BP65G? A: The maximum output power depends on the specific design and application, but NCP1250BP65G can support power levels up to 65W.

  4. Q: Can NCP1250BP65G be used in both isolated and non-isolated applications? A: Yes, NCP1250BP65G can be used in both isolated and non-isolated applications, making it versatile for various power supply designs.

  5. Q: Does NCP1250BP65G have built-in protection features? A: Yes, NCP1250BP65G includes various built-in protection features such as overvoltage protection (OVP), overload protection (OLP), and overtemperature protection (OTP).

  6. Q: What is the typical switching frequency of NCP1250BP65G? A: The typical switching frequency of NCP1250BP65G is around 65 kHz, but it can be adjusted based on the specific requirements of the application.

  7. Q: Can NCP1250BP65G operate in continuous or discontinuous conduction mode? A: NCP1250BP65G can operate in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM), providing flexibility in different load conditions.

  8. Q: Is NCP1250BP65G suitable for power factor correction (PFC) applications? A: No, NCP1250BP65G is not specifically designed for power factor correction (PFC) applications. It is primarily used for flyback converter designs.

  9. Q: What are the typical applications of NCP1250BP65G? A: NCP1250BP65G is commonly used in applications such as LED lighting, consumer electronics, industrial power supplies, and auxiliary power supplies.

  10. Q: Are there any evaluation boards or reference designs available for NCP1250BP65G? A: Yes, ON Semiconductor provides evaluation boards and reference designs that can help engineers get started with NCP1250BP65G-based designs quickly and efficiently.

Please note that these answers are general and may vary based on specific design requirements and application considerations.