FAN6921AMRMY datasheet(9/24 Pages) FAIRCHILD

Part #	FAN6921AMRMY

Description	Integrated Critical-Mode PFC and Quasi-Resonant

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

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FAN6921AMR

• Rev. 1.0.2

9

Electrical Characteristics (Continued)

VDD=15 V, TA=-40°C ~105°C (TA=TJ), unless otherwise specified.

Symbol

Parameter

Condition

Min.

Typ.

Max.

Unit

PFC Output Section

VZ

PFC Gate Output Clamping

Voltage

VDD=25 V

14.0

15.5

17.0

V

VOL

PFC Gate Output Voltage Low

VDD=15 V, IO=100 mA

1.5

V

VOH

PFC Gate Output Voltage High

VDD=15 V, IO=100 mA

8

V

tR

PFC Gate Output Rising Time

VDD=12 V, CL=3 nF,

20~80%

30

65

100

ns

tF

PFC Gate Output Falling Time

VDD=12 V, CL=3 nF,

80~20%

30

50

70

ns

PFC Zero-Current Detection Section

VZCD

Input Threshold Voltage Rising

Edge

VZCD Increasing

1.9

2.1

2.3

V

VZCD-HYST

Threshold Voltage Hysteresis

VZCD Decreasing

0.25

0.35

0.45

V

VZCD-HIGH

Upper Clamp Voltage

IZCD=3 mA

8

10

V

VZCD-LOW

Lower Clamp Voltage

0.40

0.65

0.90

V

VZCD-SSC

Starting Source Current

Threshold Voltage

1.3

1.4

1.5

V

tDELAY

Maximum Delay from ZCD to

Output Turn-On

VCOMP=5 V, fS=60 kHz

100

200

ns

tRESTART-PFC

Restart Time

300

500

700

µs

tINHIB

Inhibit Time (Maximum Switching

Frequency Limit)

VCOMP=5 V

1.5

2.5

3.5

µs

VZCD-DIS

PFC Enable / Disable Function

Threshold Voltage

0.15

0.20

0.25

V

tZCD-DIS

PFC Enable / Disable Function

Debounce Time

VZCD=100 mV

100

150

200

µs

Continued on the following page…

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