HIGH VOLTAGE GREENLINEE POWER FACTOR CONTROLLER
Order this document by MC33368/D
MC33368
Advance Information High Voltage GreenLine™ Power Factor Controller
The MC333...
Description
Order this document by MC33368/D
MC33368
Advance Information High Voltage GreenLine™ Power Factor Controller
The MC33368 is an active power factor controller that functions as a boost preconverter in off–line power supply applications. MC33368 is optimized for low power, high density power supplies requiring a minimum board area, reduced component count and low power dissipation. The narrow body SOIC package provides a small footprint. Integration of the high voltage startup saves approximately 0.7 W of power compared to resistor bootstrapped circuits. The MC33368 features a watchdog timer to initiate output switching, a one quadrant multiplier to force the line current to follow the instantaneous line voltage a zero current detector to ensure critical conduction operation, a transconductance error amplifier, a current sensing comparator, a 5.0 V reference, an undervoltage lockout (UVLO) circuit which monitors the VCC supply voltage and a CMOS driver for driving MOSFETs. The MC33368 also includes a programmable output switching frequency clamp. Protection features include an output overvoltage comparator to minimize overshoot, a restart delay timer and cycle–by–cycle current limiting.
HIGH VOLTAGE GREENLINE™ POWER FACTOR CONTROLLER
SEMICONDUCTOR TECHNICAL DATA
16 1
P SUFFIX PLASTIC PACKAGE CASE 648 (DIP–16)
Lossless Off–Line Startup Output Overvoltage Comparator Leading Edge Blanking (LEB) for Noise Immunity Watchdog Timer to Initiate Switching Restart Delay ...
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