FAN7930BMX Ver la hoja de datos (PDF) - Fairchild Semiconductor

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componentes Descripción

Fabricante

FAN7930BMX

Critical Conduction Mode PFC Controller

Fairchild Semiconductor 

Comparison between FAN7530 and FAN7930B

Function

OVP Pin

Frequency Limit

AC Absent

Detection

Soft-Start and

Startup without

Overshoot

Control Range

Compensation

THD Optimizer

TSD

FAN7530

None

None

None

None

None

External

None

FAN7930B

FAN7930B Advantages

ƒ No External Circuit for additional OVP

Integrated

ƒ Reduction of Power Loss and BOM Cost Caused

by additional OVP Circuit

ƒ Abnormal CCM Operation Prohibited

Integrated

ƒ Abnormal Inductor Current Accumulation can be

Prohibited

ƒ Increase System Reliability with AC On-Off Test

Integrated

ƒ Guarantee Stable Operation at Short Electric

Power Failure

ƒ Reduce Voltage and Current Stress at Startup

Integrated

ƒ Eliminate Audible Noise due to Unwanted OVP

Triggering

ƒ Can Avoid Burst Operation at Light Load and High

Integrated

Input Voltage

ƒ Reduce Probability of Audible Noise Due to the

Burst Operation

Internal

ƒ No External Resistor is Needed

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

Hysteresis

ƒ Converter Temperature Range Limited Range

Comparison between FAN7930 and FAN7930B

Function

RDY Pin

FAN7930

Integrated

FAN7930B

None

FAN7930B Remark

ƒ User Choice for the Use of Number #2 Pin

OVP Pin

None

Integrated

Control Range

Compensation

None

Integrated

© 2010 Fairchild Semiconductor Corporation

FAN7930B • Rev. 1.0.2

7

www.fairchildsemi.com

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