ic-stocks.com - LingCheng Electronic Components Ltd -Electronic Components Distributor


MC33368D HighVoltageGreenLine PowerFactorController www.ic-stocks.com

  • Author:salmon ye
  • Source:www.ic-stocks.com
  • Release on:2021-11-19


The MC33368 is an active power factor controller that functions as aboost 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

Lossless Off–Line Startup

Output Overvoltage Comparator

Leading Edge Blanking (LEB) for Noise Immunity

Watchdog Timer to Initiate Switching

Restart Delay Timer

IC suppliers in China
Manufacturer of electroniccomponents
China supplier of electronic parts
Electrolytic capacitor Agent
Aishi Electrolytic capacitor Agent
Hi-Link HLK module manufacture global agent