Ballast Control IC for Compact Fluorescent LampsGeneral DescriptionFAN7710V and FAN7710VL, developed using Fairchild’s unique high-voltage process and system-in-package (SiP) concept, are ballast control integrated circuits (ICs) for compact fluorescent lamps (CFL). FAN7710V/VL incorporate a preheating / ignition function, controlled by a user-selected external capacitor, to increase lamp life. The FAN7710V detects switch operation from after ignition mode through an internal active Zero-Voltage Switching (ZVS) control circuit (FAN7710VL does not). This control scheme enables the FAN7710V to detect an open-lamp condition without the expense of external circuitry and prevents stress on MOSFETs. The high-side driver built into the FAN7710V/VL has a common-mode noise cancellation circuit that provides robust operation against high-dv/dt noise intrusion. Product Status/Pricing/Packing
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Features
■ Floating Channel FAN7710V for Bootstrap Operation to +440V ■ Low Startup and Operating Current: 120µA, 2.6mA ■ Under-Voltage Lockout with 1.8V of Hysteresis ■ Adjustable Run Frequency and Preheat Time ■ Internal Active ZVS Control (FAN7710V Only) ■ Internal Protection Function (No Lamp) ■ Internal Clamping Zener Diode ■ High Accuracy Oscillator ■ Soft-Start Functionality |
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