NCP1218: PWM Controller Featuring Dynamic Self Supply
The NCP1218 represents a new, pin to pin compatible, generation of the successful 7-pin current mode NCP12XX product series. The controller allows for excellent standby power consumption by use of its adjustable skip mode and integrated high voltage startup FET. 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.
The Dynamic Self Supply (DSS) drastically simplifies the transformer design in avoiding the use of an auxiliary winding to supply the NCP1218. This feature is particularly useful in applications where the output voltage varies during operation (e.g. battery chargers). Due to its high voltage technology, the IC can be directly connected to the high voltage dc rail.
技术特性
- Fixed−Frequency 65 kHz Current−Mode Operation with Ramp
Compensation
- Dynamic Self Supply Eliminates the Need for an Auxiliary Winding
- Timer−Based Fault Protection for Improved Overload Detection
- Cycle Skip Reduces Input Power in Standby Mode
- Latched Overload Protection
- Internal High Voltage Startup Circuit
- Accurate Current Limit Detector (±5%)
- Adjustable Skip Level
- Latch Input for Easy Implementation of Overvoltage and
Overtemperature Protection
- Frequency Modulation for Softened EMI Signature
- 500 mA/800 mA Peak Source/Sink Current Drive Capability
- Pin to Pin Compatible with the Existing NCP12XX Series
- These Devices are Pb−Free and Halogen Free/BFR Free*
应用
- AC-DC Adapters
- Consumer Electronic Power Supplies
|
终端产品
- Offline Battery Chargers
- STB, DVD, DVDR
- Notebooks
- LCD Monitors
- Printers
封装图 PACKAGE DIMENSIONS
|
订购信息 Ordering Information
| 产品 |
状况 |
Compliance |
具体说明 |
封装 |
MSL* |
容器 |
预算价格 (1千个数量的单价） |
| 类型 |
外形 |
类型 |
数量 |
| NCP1218AD65R2G |
Active |
|
PWM Controller Featuring Dynamic Self Supply |
SOIC-8 |
751U |
1 |
Tape and Reel |
2500 |
$0.42 |
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