Description: Soft?뭆kip Mode Standby PWM Controller with Adjustable Skip Level and External Latch. Manufacturer: ON Semiconductor.

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.

2020年4月8日 · NCP1271是开关频率固定的反激式开关电源芯片，又分为NCP1271A和NCP1271B，他们仅有开关频率不同。 NCP1271A为65KHz，NCP1271B为100KHz。 有两种封装： 二、整体框图如下，接下来根据框图来介绍NCP1271的功能. 三、NCP1271的5种工作模式： 1、正常模式：当VCC电压高于9.1V，且VFB小于3V，NCP1271以固定频率的电流模式做PWM控制。 2、待机模式或Skip−Cycle模式：当负载减小，VFB也减小。 当VFB减小到小 …

NCP1271 是成功的 7 引脚电流模式 NCP12XX 系列的新一代引脚-引脚兼容新产品。 该控制器通过使用可调节 Soft Skip 模式和集成的高电压启动 FET，实现了卓越的待机功耗。 此专属 Soft Skip 还大大降低了噪音的风险。 因此可以在箝位网络中使用不是非常昂贵的变压器和电容器。 内部频率抖动、斜坡补偿、基于计时器的故障检测和锁存输入使得此控制器成为耐用性和部件成本为关键限制因素的转换器的绝佳备选。 Product services, tools and other useful resources related to …

Part #: NCP1271A. Description: Soft?뭆kip Mode Standby PWM Controller with Adjustable Skip Level and External Latch. File Size: 151.49 Kbytes. Manufacturer: ON Semiconductor.

NCP 1 271为NCP12 0 0系列新成员，为定频电流型PMW控制器。 新技术可令待机功耗更低，消除待机噪声，可用最廉价的 变压器 及电容来钳制功耗，外锁存功能使控制器有极好的后各。 （1）固定频率，电流型工作，具有内部斜率补偿及待机时跨越周期工作。 （2） 故障 保护增加一个保护时段，改善了过载检测。 （3）软跨越模式技术将待机噪声降至最低。 （4）内部高压起动源完成无损起动。 （5）全 温度 范围内±5％的限流精度。 （6）＋500mA／-800mA的驱动能 …

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 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.

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.