FSQ0765RSWDTU datasheet(6/19 Pages) FAIRCHILD

Part #	FSQ0765RSWDTU

Description	Green-Mode Fairchild Power Switch (FPS) for Quasi-Resonant Operation - Low EMI and High Efficiency

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

Direct Link	http://www.fairchildsemi.com

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FSQ0765RS • Rev. 1.0.2

6

Electrical Characteristics

TA = 25°C unless otherwise specified.

Note:

10. Propagation delay in the control IC.

Continued on the following page...

Symbol

Parameter

Conditions

Min. Typ. Max. Units

SENSEFET SECTION

BVDSS

Drain Source Breakdown Voltage

VCC = 0V, ID = 100µA

650

V

IDSS

Zero-Gate-Voltage Drain Current

VDS = 520V, VGS = 0V

300

µA

RDS(ON)

Drain-Source On-State Resistance

TJ = 25°C, ID = 1.8A

1.3

1.6

Ω

COSS

Output Capacitance

VGS = 0V, VDS = 25V, f = 1MHz

125

pF

td(on)

Turn-On Delay Time

VDD = 325V, ID = 6.5A

27

ns

tr

Rise Time

102

ns

td(off)

Turn-Off Delay Time

63

ns

tf

Fall Time

65

ns

CONTROL SECTION

tON.MAX

Maximum On Time

TJ = 25°C

8.8

10.0

11.2

µs

tB

Blanking Time

TJ = 25°C, Vsync = 5V

13.2

15.0

16.8

µs

tW

Detection Time Window

TJ = 25°C, Vsync = 0V

6.0

µs

fSW

Initial Switching Frequency

59.6

66.7

75.8

kHz

ΔfSW

Switching Frequency Variation(11)

-25°C < TJ < 85°C

±5

±10

%

tAVS

AVS Triggering

Threshold(11)

On Time

at VIN = 240VDC, Lm = 360μH

(AVS triggered when

VAVS>spec & tAVS<spec.)

4.0

µs

VAVS

Feedback

Voltage

1.2

V

tSW

Switching Time Variance by AVS(11)

Sync = 500kHz sine input

VFB = 1.2V, tON = 4.0µs

13.5

20.5

µs

IFB

Feedback Source Current

VFB = 0V

700

900

1100

µA

DMIN

Minimum Duty Cycle

VFB = 0V

0

%

VSTART

UVLO Threshold Voltage

11

12

13

V

VSTOP

After turn-on

7

8

9

V

tS/S

Internal Soft-Start Time

With free-running frequency

17.5

ms

VOVP

Over-Voltage Protection

18

19

20

V

BURST-MODE SECTION

VBURH

Burst-Mode Voltages

TJ = 25°C, tPD = 200ns(10)

0.45

0.55

0.65

V

VBURL

0.25

0.35

0.45

V

VB_HYS

200

mV

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