NCP1618 Overview
High-Voltage, Multimode Power Factor Controller NCP1618 The NCP1618 is an innovative multimode power factor controller. The circuit naturally transitions from one operation mode to another depending the switching period duration so that the efficiency is optimized over the line/load range. In very−light−load conditions, the circuit can enter the soft−SKIP mode for minimized losses.
NCP1618 Key Features
- Multimode Operation for Optimized Operation over the Line/Load
- Near-Unity Power Factor in All Modes (Except Soft-SKIP Mode)
- Firm Control of the Switching Frequency between 25 kHz and
- High-Voltage Start-Up Current Source for VCC Capacitor Charge at
- Internal pensation of the Regulation Loop
- X2 Cap Discharge Function
- Fast Line / Load Transient pensation (Dynamic Response
- Large VCC Operating Range (9.5 V to 35 V)
- Line Range Detection
- pfcOK Signal For Enabling/Disabling the Downstream Converter