The NCP13992 is a high performance current mode controller for half bridge resonant converters. This controller implements 600 V gate drivers, simplifying layout and reducing external component count. The Controller also features built-in high voltage startup. The Brown-Out input function eases implementation of the controller in all applications. In applications where a PFC front stage is needed, theNCP13992 features a dedicated output to drive the PFC controller.This feature together with quiet skip mode technique further improves light load efficiency of the whole application. The NCP13992 provides a suite of protection features allowing safe operation in any application. This includes: overload protection, over-current protection to prevent hard switching cycles, brown-out detection, open optocoupler detection, automatic dead-time adjust, over-voltage (OVP) and over-temperature (OTP) protections. The LLC current mode means that the operating frequency of an LLC converter is not controlled via voltage (or current) controlled oscillator but is directly derived from the resonant capacitor voltage signal and actual feedback level. This control technique brings several benefits compare totraditional voltage mode controllers like improved line and load transient response and inherent out of zero voltage switching protection.
大大通精彩博文 世平安森美半導體 All_in One PC電源評估板使用說明
High Voltage Start Up Circuit with Integrated Brownout Detection
Wide VCC Range: from 9.5 V to 28 V
Input X2 Capacitor Discharge Circuitry
High Frequency Operation from 20 kHz up to 750 kHz
Current Mode Control Scheme
Automatic Dead time with Maximum Dead