NE1180

CCM continuous mode high-power PFC chip

The NE1180 is a controller for continuous on-mode (CCM) power factor correction (PFC) step-up preconverters. In fixed frequency mode, it controls the power switch on-time (PWM) and depends on the instantaneous coil current. The circuit is packaged in SO-8, minimizing the number of external components and greatly simplifying PFC implementation. It also incorporates high safety features for effective input power runaway clamp circuits

Product features:

• Average current continuous conduction mode

• Fast transient response

• External application circuit is simple

• ±1.5A drive capability

• Low working current

• chip built-in 65KHz and 130KHz high-precision switching frequency

• has an internally adjustable reference base

• Built-in soft start function

• Output undervoltage and overvoltage protection

• Input line voltage BO protection

• High precision overcurrent protection