Hi6278 combines a dedicated current mode PWM controller with integrated high voltage power MOSFET.Vcc low startup current and low operating current contribute to a reliable power on startup design with Hi6278. the IC operates in Extended ‘burst mode’ to minimize switching loss. Lower standby power and higher conversio efficiency is thus achieved. Hi6278 operates in the fixed PWM frequency ,the frequency is 65KHz.Excellent EMI performance is achieved with proprietary frequency huffling echnique.Soft Start with 4mS,Hi6278 offers complete protection coverage with automatic self-recovery feature including Vcc over voltage clamp and under voltage lockout (UVLO), over voltage protection(OLP),over current protection (OCP). Hi6278 is offered in SOP8 package.
Hi627X系列不同尾缀功率如下
HI6272 : 13瓦
HI6273 : 18瓦
HI6274 : 20瓦
HI6276 : 25瓦
HI6277 : 29瓦
HI6278 : 33瓦
HI6279 : 36瓦
Hi6278高度集成的33瓦电源芯片，具有高性能、低待机功耗和低成本的离线反激式控制器。优化了功率管的开关驱动等，大大提高了EMI 的性能，使得系统 EMI 的设计非常简单。更多HI6278信息请咨询博主。
