FAN7621B データシートの表示（PDF） - Fairchild Semiconductor

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FAN7621B

PFM Controller for Half-Bridge Resonant Converters

Fairchild Semiconductor 

Electrical Characteristics

TA=25°C and LVCC=17V unless otherwise specified.

Symbol

Parameter

Test Conditions

Supply Section

ILK

IQHVCC

IQLVCC

Offset Supply Leakage Current

Quiescent HVCC Supply Current

Quiescent LVCC Supply Current

IOHVCC

Operating HVCC Supply Current

(RMS Value)

IOLVCC

Operating LVCC Supply Current

(RMS Value)

HVCC=VCTR

(HVCCUV+) - 0.1V

(LVCCUV+) - 0.1V

fOSC=100kHz, VCON > 0.6V,

CLoad=1nF

No Switching, VCON < 0.4V

fOSC=100kHz, VCON > 0.6V,

CLoad=1nF

No Switching, VCON < 0.4V

UVLO Section

LVCCUV+

LVCCUV-

LVCCUVH

LVCC Supply Under-Voltage Positive Going Threshold (LVCC Start)

LVCC Supply Under-Voltage Negative Going Threshold (LVCC Stop)

LVCC Supply Under-Voltage Hysteresis

HVCCUV+

HVCCUV-

HVCCUVH

HVCC Supply Under-Voltage Positive Going Threshold (HVCC Start)

HVCC Supply Under-Voltage Negative Going Threshold (HVCC Stop)

HVCC Supply Under-Voltage Hysteresis

Oscillator & Feedback Section

VCONDIS Control Pin Disable Threshold Voltage

VCONEN

VRT

fOSC

DC

Control Pin Enable Threshold Voltage

V-I Converter Threshold Voltage

Output Oscillation Frequency

Output Duty Cycle

RT=5.2kΩ

fSS

Internal Soft-Start Initial Frequency fSS=fOSC+40kHz, RT=5.2kΩ

tSS

Internal Soft-Start Time

Output Section

Isource

Isink

tr

tf

Peak Sourcing Current

Peak Sinking Current

Rising Time

Falling Time

HVCC=17V

HVCC=17V

CLoad=1nF, HVCC=17V

VHOH

VHOL

VLOH

VLOL

High Level of High-Side Gate Driving

Signal (VHVCC-VHO)

Low Level of High-Side Gate Driving

Signal

High Level of High-Side Gate Driving

Signal (VLVCC-VLO)

Low Level of High-Side Gate Driving

Signal

IO=20mA

Min. Typ. Max. Unit

50

μA

50 120 μA

100 200 μA

5

8

mA

100 200 μA

6

9

mA

2

4

mA

11.2 12.5 13.8 V

8.90 10.00 11.10 V

2.5

V

8.2 9.2 10.2 V

7.8 8.7 9.6

V

0.5

V

0.36 0.40 0.44 V

0.54 0.60 0.66 V

1.5 2.0 2.5

V

94 100 106 kHz

48

50

52

%

140

kHz

2

3

4

ms

250 360

mA

460 600

mA

65

ns

35

ns

1.0

V

0.6

V

1.0

V

0.6

V

© 2009 Fairchild Semiconductor Corporation

FAN7621B • Rev. 1.0.1

5

www.fairchildsemi.com

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