Press Center
 
Home About us Products Support Quality & Certification Career Contact us
• Power Management
    Linear Regulators
    Low Dropout Linear Regulators
    DDR Termination Regulators
    Shunt Reference Regulators
    Step Down Switching Regulators
    Switching Regulator
    Step-Up DC-DC Converter
    PWM Controller
    White LED Driver
    Supervisory Circuit
    Voltage Detection and System R
    USB Power Switch
    Power Factor Control
    Li-Battery Protection or Charg
    FET Bias Controllers
    Combo IC
    Inverting DC-DC Converter
• Amplifier / Comparator
    Audio Amplifiers
    Operational Amplifier
    Voltage Comparator
• Analog Switches
    Video Signal Switch
    Analog Multiplexers, Demultipl
• Hall ICs
• Special Application ICs
    Motor Controller IC
    Interface and Driver Circuit
    Telecommunication Circuit
    Melody IC
    Alarm /Sound Generator IC
    Remote Controller IC
    Television Circuit
    Leakage Current Detector
    Automotive IC
    A-D or D-A Converters
    Miscellaneous
    Radio and Cassette Recorder Ci
    Timer
    Mouse&Keyboard Controller
    Transient Voltage Suppressors
    Sense Monitor
    Video Filter
    ZCB snubber
• Logic
• TRANSISTORs
• MOSFETs
    JFET
    Power Mosfet
• TRIACs
• SCRs
• DIODEs
 
Home > Power Factor Control
UA7527 Datasheet

POWER FACTOR CONTROLLER
 
 

 
DESCRIPTION

 
The UTC UA7527 is a simple and high performance active power factor corrective controller for boost PFC application which operates in the critical conduction mode. The UTC UA7527 is optimized for electronic ballasts, low power and high density power supplies which require minimum board area reduced component count and low power dissipation. Internal R/C filter eliminates the need for an external R/C filter. Special circuitry has also been added to prevent no load runaway conditions. The output drive clamping circuit limits the overshoot of the power MOSFET gate drive despite the supply voltage. This greatly enhances the system reliability.
 
 
FEATURES
* Internal Start-up Timer
* Very Precise Adjustable Output Over Voltage Protection
* Zero Current Detector
* Quadrant Multiplier
* Internal R/C Filter Eliminates the Need for an External R/C Filter
* Trimmed 1.5% Internal Band Gap Reference
* Under Voltage Lockout with 3V of Hysteresis
* Totem Pole Output With High State Clamp
* Low Start-up and Operating Current
About us  |  Products  |  Contact us
Copyright 2011 UTC All received