Rochester Electronics PMIC - AC DC Converters, Offline Switchers NCP1216P100G

The NCP1216P100G is a PWM current-mode controller designed for high-power universal offline supplies, available in a PDIP-7 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 ideal for applications such as battery chargers and televisions. This device incorporates current-mode control, providing excellent input audio susceptibility and pulse-by-pulse control. It includes internal ramp compensation to prevent sub-harmonic oscillations in continuous conduction mode designs. The NCP1216P100G also features a skip cycle mode for improved efficiency at light loads, with a user-adjustable peak current to minimize acoustic noise. Protection features include auto-recovery from output short-circuit conditions and an internal temperature shutdown mechanism. The device supports fixed frequency operation at 100 kHz and is compatible with the NCP1200 series, making it a versatile choice for various applications, including high-power AC-DC converters and offline adapters for notebooks.