Fairchild/ON Semiconductor FAN7535M

Description
The FAN7535 is a simple, high-performance, active power factor correction (PFC) and ballast control IC. It is optimized for all types of fluorescent lamps, requiring minimum board area and external components. The FAN7535 PFC control block reduces the input current THD lower than conventional CRM boost PFC methods. An innovative Active Zero Voltage Switching (AZVS) block reduces the switching power loss. A dedicated timing section in the FAN7535 allows the user to set the necessary parameters for proper lamp preheat and ignition.

Features
PFC, Ballast Control, and Half-Bridge Driver in One IC
PFC Driver Current Capability: 500mA/-800mA
Critical Conduction Mode Control Type PFC
Internal Clamping Zener Diode (PFC): 23V
Under-Voltage Lockout with 3.5V of Hysteresis (PFC)
Internal Clamping Zener Diode (Ballast): 15V
Lower didt Gate Driver for Better Noise Immunity
Under-Voltage Lockout with 1.8V Hysteresis (Ballast)
Ballast Driver Current Capability: 350mA/-650mA
Programmable Preheat Time & Frequency
Programmable Run Frequency
Programmable Ignition Sweep Time
Internal Active ZVS Control
Internal Protection Function (Latch Mode)

Applications
Fluorescent Lamp Ballast