FL7930CMX_G Ver la hoja de datos (PDF) - Fairchild Semiconductor

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componentes Descripción

Fabricante

FL7930CMX_G

Single-Stage Flyback and Boundary-Mode PFC Controller for Lighting

Fairchild Semiconductor 

Comparison of FL6961 and FL7930C

Function

PFC Ready Pin

FL6961

None

Frequency Limit

None

VIN-Absent Detection

None

Soft-Start and

Startup without

Overshoot

THD Optimizer

TSD

Control Range

Compensation

None

External

None

None

FL7930C

FL7930C Advantages

 No External Circuit for PFC Output UVLO

Integrated

 Reduce Power Loss and BOM Cost Caused by

PFC Out UVLO Circuit

 Versatile Open-Drain Pin

 Abnormal CCM Operation Prohibited

Integrated

 Abnormal Inductor Current Accumulation Can Be

Prohibited

Integrated

 Increase System Reliability by Testing for Input

Supply Voltage

 Guarantee Stable Operation at Short Electric

Power Failure

 Reduce Voltage and Current Stress at Startup

Integrated

 Eliminate Audible Noise due to Unwanted OVP

Triggering

Internal

 No External Resistor Needed

140°C with 60°C  Stable and Reliable TSD Operation

Hysteresis

 Converter Temperature Range Limited Range

Integrated

Comparison of FL7930B and FL7930C

Function

FL7930B

FL7930C

RDY Pin

None

Integrated

OVP Pin

Integrated

None

FL7930C Remark

 If PFC Rated Output Voltage is Assumed 390 V:

VRDY_HIGH Trigger Voltage = 349 V,

VRDY_LOW Trigger Voltage = 320 V

© 2011 Fairchild Semiconductor Corporation

FL7930C • Rev. 1.0.2

7

www.fairchildsemi.com

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