onsemi PMIC - PMIC - AC DC Converters, Offline Switchers - NCP1216AD100R2G NCP1216AD100R2G

The NCP1216AD100R2G is a PWM current-mode controller designed for high-power universal offline supplies, housed in an SOIC,àí8 package. It features a high drive capability suitable for driving large gate-charge MOSFETs, which simplifies the design of modern AC-DC adapters. The controller operates without the need for an auxiliary winding, drawing power directly from the high-voltage rail, making it particularly useful in applications such as battery chargers and televisions. This device incorporates current-mode control, which enhances input audio susceptibility and provides pulse-by-pulse control. It includes internal ramp compensation to prevent sub-harmonic oscillations in continuous conduction mode designs. The NCP1216AD100R2G also features a skip cycle mode for improved efficiency at light loads, with a user-adjustable peak current setting to minimize acoustic noise. Protection features include auto-recovery from output short-circuit conditions and a built-in frequency jittering mechanism to improve EMI performance. The device supports a peak current capability of 500 mA and operates at a fixed frequency of 100 kHz. It is also compatible with the NCP1200 series, making it a versatile choice for various high-power applications, including AC-DC converters for TVs and offline adapters for notebooks.