GreenLine Compact Power Factor Controller : Innovative Circuit for Cost Effective Solutions
The MC33260 is a controller for Power Factor Correction preconverters meeting international standard requirements inelectronic ballast and off–line power conversion applications. Designed to drive a free frequency discontinuous mode, it can also be synchronized and in any case, it features very effective protections that ensure a safe and reliable operation.
This circuit is also optimized to offer extremely compact and cost effective PFC solutions. While it requires a minimum number of external components, the MC33260 can control the follower boost operation that is an innovative mode allowing a drastic size reduction of both the inductor and the power switch. Ultimately, the solution system cost is significantly lowered.
Also able to function in a traditional way (constant output voltage regulation level), any intermediary solutions can be easily implemented. This flexibility makes it ideal to optimally cope with a wide range of applications.
General Features
Standard Constant Output Voltage or “Follower Boost” Mode
Switch Mode Operation: Voltage Mode
Latching PWM for Cycle–by–Cycle On–Time Control
Constant On–Time Operation That Saves the Use of an Extra Multiplier
Totem Pole Output Gate Drive
Undervoltage Lockout with Hysteresis
Low Start–Up and Operating Current
Improved Regulation Block Dynamic Behavior
Synchronization Capability
Internally Trimmed Reference Current Source
Safety Features
Overvoltage Protection: Output Overvoltage Detection
Undervoltage Protection: Protection Against Open Loop
Effective Zero Current Detection
Accurate and Adjustable Maximum On–Time Limitation
Overcurrent Protection
ESD Protection on Each Pin
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