FSQ510MX datasheet(5/14 Pages) FAIRCHILD

Part #	FSQ510MX

Description	Green Mode Fairchild Power Switch (FPS) for Valley Switching Converter - Low EMI and High Efficiency

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

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FSQ510 / FSQ510MX • Rev. 1.4.0

5

TJ=25°C unless otherwise specified.

Electrical Characteristics

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

SenseFET Section

BVDSS

Drain-Source Breakdown Voltage

VCC=0 V, ID=100 µA

700

V

IDSS

Zero-Gate-Voltage Drain Current

VDS=700 V

150

µA

RDS(ON)

Drain-Source On-State Resistance

TJ=25°C, ID=180 mA

28

32

Ω

TJ=100°C, ID=180 mA

42

48

Ω

CISS

Input Capacitance

(9)

VGS=11 V

96

pF

COSS

Output Capacitance

(9)

VDS=40 V

28

pF

tr

Rise Time

(9)

VDS=350 V, ID=25 mA

100

ns

tf

Fall Time

(9)

VDS=350 V, lD=25 mA

50

ns

Control Section

fS

Initial Switching Frequency

VCC=11 V, VFB=5 V, Vsync=0 V

87.7

94.3

100.0

kHz

∆f

S

Switching Frequency Variation

(9)

-25

°C < T

J < 125°C

±5

±8

%

IFB

Feedback Source Current

VCC=11 V, VFB=0 V

200

225

250

µA

tB

Switching Blanking Time

VCC=11 V, VFB=1 V,

Vsync Frequency Sweep

7.2

7.6

8.2

µs

tW

Valley Detection Window Time

(9)

3.0

µs

DMAX

Maximum Duty Ratio

VCC=11 V, VFB=3 V

54

60

66

%

DMIN

Minimum Duty Ratio

VCC=11 V, VFB=0 V

0

%

VSTART

UVLO Threshold Voltage

VFB=0 V, VCC Sweep

8.0

8.7

9.4

V

VSTOP

After Turn-on, VFB=0 V

6.0

6.7

7.4

V

tS/S

Internal Soft-Start Time

VSTR=40 V, VCC Sweep

3

5

7

ms

Burst-Mode Section

VBURH

Burst-Mode Voltage

VCC=11 V, VFB Sweep

0.75

0.85

0.95

V

VBURL

0.65

0.75

0.85

V

HYS

100

mV

Protection Section

ILIM

Peak Current Limit

di/dt=90 mA/µs

280

320

360

mA

VSD

Shutdown Feedback Voltage

VDS=40 V, VCC=11 V,

VFB Sweep

4.2

4.7

5.2

V

IDELAY

Shutdown Delay Current

VCC=11 V, VFB=5 V

3.5

4.5

5.5

µA

tLEB

Leading-Edge Blanking Time

(9)

360

ns

TSD

Thermal Shutdown Temperature

(9)

130

140

150

°C

HYS

60

°C

Synchronous Section

VSH

Synchronous Threshold Voltage

VCC=11 V, VFB=1 V

0.55

0.70

0.85

V

VSL

VCC=11 V, VFB=1 V

0.05

0.10

0.15

V

tSync

Synchronous Delay Time

180

200

220

ns

Total Device Section

IOP

Operating Supply Current

(Control Part Only)

VCC=11 V, VFB=5.5 V

0.8

1.0

mA

ICH

Startup Charging Current

VCC=VFB=0 V,VSTR=40 V

1.0

1.2

mA

VSTR

Supply Voltage

VCC=VFB=0 V, VSTR Sweep

27

V

Note:

9.

These parameters, although guaranteed, are not 100% tested in production.

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