FL7930B Ver la hoja de datos (PDF) - ON Semiconductor

Número de pieza

componentes Descripción

Fabricante

FL7930B

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

ON Semiconductor 

Comparison of FL6961 and FL7930B

Function

OVP Pin

FL6961

None

Frequency Limit

None

VIN-Absent Detection None

Soft-Start and

Startup without

Overshoot

Control Range

Compensation

THD Optimizer

TSD

Control Range

Compensation

None

None

External

None

None

FL7930B



Integrated 



Integrated 



Integrated





Integrated 



Integrated



Internal



140°C with 

60°C Hysteresis 

FL7930B Advantages

No External Circuit for additional OVP

Reduction of Power Loss and BOM Cost Caused by

Additional OVP Circuit

Abnormal CCM Operation Prohibited

Abnormal Inductor Current Accumulation Can Be

Prohibited

Increase System Reliability by Testing for Input Supply

Voltage

Guarantee Stable Operation at Short Electric Power

Failure

Reduce Voltage and Current Stress at Startup

Eliminate Audible Noise Due to Unwanted OVP

Triggering

Can Avoid Burst Operation at Light Load and High Input

Voltage

Reduce Probability of Audible Noise Due to Burst

Operation

No External Resistor is Needed

Stable and Reliable TSD Operation

Converter Temperature Range Limited Range

Integrated

Comparison of FL7930B and FL7930C

Function

RDY Pin

OVP Pin

FL7930B

None

Integrated

FL7930C

Integrated

None

FL7930B Remark

 User Choice for the Use of Number #2 Pin

© 2010 Fairchild Semiconductor Corporation

FL7930B • Rev. 1.0.4

8

www.fairchildsemi.com

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