NCP1207B
Advanced pulse width modulation technology used in power supplies for improved performanceNCP1207B
Advanced pulse width modulation technology used in power supplies for improved performance
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NCP1207B 數據表
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詳細說明
One standout feature of the NCP1207B is its low power standby mode, which significantly reduces power consumption when the power supply is not actively used. This makes it an excellent choice for applications requiring high efficiency and minimal standby power usage
主要特徵
- Low Noise and RFI Emissions
- High Power Factor Correction Ratio
- Synchronous Rectification for Low-Loss Conversion
- Internal Thermal Shutdown Protection
- Output Under-Voltage Lockout Feature
應用
- Security cameras
- Electric vehicles
- Home automation
數據表 PDF
數據表記錄了器件的特性、絕對最大額定值、應用等,這對於作為器件特定應用的整體指南大有裨益。
常見問題解答
What is NCP1207B?
The NCP1207B is a PWM controller designed for use in offline flyback converters. It is ideal for applications such as power supplies for appliances, standby power supplies, and auxiliary power supplies. The controller integrates a fixed frequency oscillator, an under-voltage lockout, and a short-circuit protection function.
How Does NCP1207B Work?
The NCP1207B operates as a pulse width modulation (PWM) controller, regulating the power delivered from the input to the output in flyback converter applications. It includes features such as current limiting and overvoltage protection, ensuring safe and reliable operation in various power supply designs.
How Many Pins does NCP1207B have and What are the Functions of the Pinout Configuration?
The NCP1207B is available in various package types, such as PDIP-8 (Plastic Dual In-line Package) and SOIC-7 (Small Outline Integrated Circuit). The pinout configuration includes:
- VCC: Power supply pin for the controller.
- GND: Ground pin.
- FB: Feedback pin for output voltage regulation.
- RT: Timing resistor pin for setting the oscillator frequency.
- CT: Timing capacitor pin for setting the oscillator frequency.
- COMP: Compensation pin for loop stabilization.
- SYNC: Synchronization pin for external frequency synchronization (if available).
- DRV: Gate driver output pin for the power switch.
What are the Pros and Cons of NCP1207B?
Pros:
- Wide Operating Voltage Range: Suitable for various input voltage levels in offline power supply applications.
- Integrated Protections: Includes features such as overvoltage protection and overcurrent protection for enhanced reliability.
- Simple External Circuitry: Requires minimal external components for a basic flyback converter design.
- Low Standby Power Consumption: Helps meet energy efficiency standards in standby power applications.
- Cost-Effective: Offers cost-effective solutions for basic power supply designs.
Cons:
- Limited Features: May not be suitable for advanced power supply designs requiring additional functions and protections.
- Package Options: Availability in PDIP-8 or SOIC-7 packages may not meet specific layout or space requirements.
Are There Any Equivalents/Alternatives to NCP1207B for Recommendation?
- The UC3842 from Texas Instruments and the SG3525A from STMicroelectronics are alternatives to the NCP1207B for PWM controller applications.
- An equivalent part to the NCP1207B is the FAN7601 from Fairchild Semiconductor.
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