NCP1271: PWM Controller, Soft-Skip™ Standby, with Adjustable Skip Level and External Latch
The NCP1271 represents a new, pin to pin compatible, generation of the successful 7 pin current mode NCP12XX product series. The controller allows for excellent stand by power consumption by use of its adjustable Soft Skip mode and integrated high voltage startup FET. This proprietary Soft Skip also dramatically reduces the risk of acoustic noise. This allows the use of inexpensive transformers and capacitors in the clamping network. Internal frequency jittering, ramp compensation, timer based fault detection and a latch input make this controller an excellent candidate for converters where ruggedness and component cost are the key constraints.
特性- Short Circuit Protection Independent of the Auxiliary Winding
- Adjustable Soft Skip Mode
- Internal High-Voltage Start-up
- 5% Current Limit Accuracy over the Full Temperature Range
- Internal Latch for Easy Implementation of Overvoltage and Overtemperature Protection
- Frequency Jittering for Softened EMI Signature
- +500 mA/800 mA Peak Current Drive Capability
| 优势- Efficient protective circuitry
- Provides improved efficiency at light loads and reduces the acoustic noise
- Clean and loss less start-up sequence and reduces component count
|
应用- ACDC Adapters
- Consumer Electronic Power Supplies
| 终端产品- Offline Battery Chargers
- STB, DVD, DVDR
- Notebooks
- LCD Monitors
- Printers
|
封装
设计和开发工具 (2)
封装图纸 (2)
应用注释 (3)
评估板文档 (5)
数据表 (1)
评估板与开发工具
| 产品 | 状况 | Compliance | 简短说明 |
|---|
| NCP1271ADAPGEVB | Active | Pb-free | 57 W Adapter Evaluation Board |
产品订购型号
| 产品 | 状况 | Compliance | 封装 | MSL* | 容器 | 预算价格 (1千个数量的单价） |
|---|
| NCP1271D100R2G | Active | Pb-free
Halide free | SOIC-7 | 751U | 1 | Tape and Reel | 2500 | $0.25 |
| NCP1271D65R2G | Active | Pb-free
Halide free | SOIC-7 | 751U | 1 | Tape and Reel | 2500 | $0.25 |
| NCP1271P100G | Active | Pb-free
Halide free | PDIP-8 | 626B | NA | Tube | 50 | $0.46 |
| NCP1271P65G | Active | Pb-free
Halide free | PDIP-8 | 626B | NA | Tube | 50 | $0.6133 |
订购产品技术参数
| Product | Topology | Control Mode | fsw Typ (kHz) | Stand-by Mode | UVLO (V) | Short Circuit Protection | Latch | Soft Start | VCC Max (V) | Drive Cap. (mA) |
|---|
| NCP1271D100R2G | Flyback | Current Mode | 100 | Yes | Yes | Yes | Yes | Yes | 20 | 500 / 800 |
| NCP1271D65R2G | Flyback | Current Mode | 65 | Yes | Yes | Yes | Yes | Yes | 20 | 500 / 800 |
| NCP1271P100G | Flyback | Current Mode | 100 | Yes | Yes | Yes | Yes | Yes | 20 | 500 / 800 |
| NCP1271P65G | Flyback | Current Mode | 65 | Yes | Yes | Yes | Yes | Yes | 20 | 500 / 800 |
