Fairchild FQA8N90C-F109 service manual

FQA8N90C_F109

900V N-Channel MOSFET

FQA8N90C_F109 900V N-Channel MOSFET

November 2007

®

QFET

Features

• 8A, 900V, R

• Low gate charge ( typical 35 nC)

• Low Crss ( typical 12pF)

•Fast switching

• 100% avalanche tested

• Improved dv/dt capability

• RoHS compliant

= 1.9Ω @VGS = 10 V

DS(on)

GSD

TO-3PN

FQA Series

Description

These N-Channel enhancement mode power field effect
transistors are produced using Fairchild’s proprietary, planar
stripe, DMOS technology.
This advanced technology has been especially tailored to
minimize on-state resistance, provide superior switching
performance, and withstand high energy pulse in the avalanche
and commutation mode. These devices are well suited for high
efficient switched mode power supplies, active power factor
correction, electronic lamp ballast based on half bridge
topology.

D

G

S

Absolute Maximum Ratings

Symbol Parameter FQA8N90C_F109 Units

V

DSS

I

D

I

DM

V

GSS

E

AS

I

AR

E

AR

dv/dt Peak Diode Recovery dv/dt

P

D

, T

T

J

STG

T

L

Drain-Source Voltage 900 V

Drain Current - Continuous (TC = 25°C) 8.0 A

- Continuous (T

Drain Current - Pulsed
Gate-Source Voltage ± 30 V

Single Pulsed Avalanche Energy

Avalanche Current

Repetitive Avalanche Energy

Power Dissipation (TC = 25°C) 240 W

- Derate above 25°C 1.92 W/°C

Operating and Storage Temperature Range -55 to +150 °C

Maximum lead temperature for soldering purposes,

1/8" from case for 5 seconds

= 100°C) 5.1 A

C

(Note 1)

(Note 2)

(Note 1)

(Note 1)

(Note 3)

32 A

850 mJ

8.0 A

24 mJ

4.0 V/ns

300 °C

Thermal Characteristics

Symbol Parameter Typ Max Units

R

θJC

R

θCS

R

θJA

©2007 Fairchild Semiconductor Corporation 1 www.fairchildsemi.com

FQA8N90C_F109 Rev. A

Thermal Resistance, Junction-to-Case -- 0.52 °C/W
Thermal Resistance, Case-to-Sink 0.24 -- °C/W
Thermal Resistance, Junction-to-Ambient -- 40 °C/W

Package Marking and Ordering Information

Device Marking Device Package Reel Size Tape Width Quantity

FQA8N90C FQA8N90C_F109 TO-3PN -- -- 30

FQA8N90C_F109 900V N-Channel MOSFET

Electrical Characteristics T

= 25°C unless otherwise noted

C

Symbol Parameter Test Conditions Min Typ Max Units

Off Characteristics

BV

DSS

∆BV
∆T

J

I

DSS

I

GSSF

I

GSSR

On Characteristics

V

GS(th)

R

DS(on)

g

FS

Dynamic Characteristics

C

iss

C

oss

C

rss

Switching Characteristics

t

d(on)

t

r

t

d(off)

t

f

Q

g

Q

gs

Q

gd

Drain-Source Diode Characteristics and Maximum Ratings

I

S

I

SM

V

SD

t

rr

Q

rr

NOTES:

1. Repetitive Rating : Pulse width limited by maximum junction temperature

2. L = 25mH, IAS =8.0A, VDD = 50V, RG = 25 Ω, Starting TJ = 25°C

3. ISD ≤ 8.0A, di/dt ≤200A/µs, VDD ≤ BV

4. Pulse Test : Pulse width ≤ 300µs, Duty cycle ≤ 2%

5. Essentially independent of operating temperature

Drain-Source Breakdown Voltage VGS = 0 V, ID = 250 µA 900 -- -- V

/

DSS

Breakdown Voltage Temperature Coefficient ID = 250 µA, Referenced to 25°C -- 0.95 -- V/°C

Zero Gate Voltage Drain Current VDS = 900 V, VGS = 0 V -- -- 10 µA

= 720 V, TC = 125°C -- -- 100 µA

V

DS

Gate-Body Leakage Current, Forward VGS = 30 V, VDS = 0 V -- -- 100 nA

Gate-Body Leakage Current, Reverse VGS = -30 V, VDS = 0 V -- -- -100 nA

Gate Threshold Voltage VDS = VGS, ID = 250 µA3.0--5.0V

Static Drain-Source On-Resistance VGS = 10 V, ID = 4.0 A -- 1.6 1.9 Ω

Forward Transconductance VDS = 50 V, ID = 4.0 A (Note 4) -- 5.5 -- S

Input Capacitance VDS = 25 V, VGS = 0 V,

Output Capacitance -- 130 170 pF

f = 1.0 MHz

-- 1600 2080 pF

Reverse Transfer Capacitance -- 12 15 pF

Turn-O n Delay Time VDD = 450 V, ID = 11.0A,

R

= 25 Ω

Turn-O n Rise Time --

Turn-Off Delay Time --

Turn-Off Fall Time --

G

(Note 4, 5)

Total Gate Charge VDS = 720 V, ID = 11.0A,

V

= 10 V

Gate-Source Charge --

Gate-Drain Charge --

GS

(Note 4, 5)

--

--

40 90

110 230

70 150

70 150

35 45

10

14

-- nC

-- nC

Maximum Continuous Drain-Source Diode Forward Current -- -- 8.0 A

Maximum Pulsed Drain-Source Diode Forward Current -- -- 32.0 A

Drain-Source Diode Forward Voltage VGS = 0 V, IS = 8.0 A -- -- 1.4 V

Reverse Recovery Time VGS = 0 V, IS = 8.0 A,

dI

/ dt = 100 A/µs (Note 4)

Reverse Recovery Charge -- 5.8 --

Starting TJ = 25°C

DSS,

F

-- 530 -- ns

ns

ns

ns

ns

nC

µC

FQA8N90C_F109 Rev. A

2 www.fairchildsemi.com

Typical Performance Characteristics

Figure 1. On-Region Characteristics Figure 2. Transfer Characteristics

FQA8N90C_F109 900V N-Channel MOSFET

-55oC

Notes :※

1. VDS = 50V

2. 250µ s Pulse Test

10

10

, Drain Current [A]

D

I

10

V
Top : 15.0 V

10.0 V

8.0 V

7.0 V

1

6.5 V

6.0 V
Bottom : 5.5 V

0

-1

-1

10

GS

0

10

VDS, Drai n-Source Vol tage [V]

1

10

150oC

25oC

Note s :※

1. 250µ s Pulse Test

2. T

= 25℃

C

1

10

0

10

, Drain Current [A]

D

I

-1

10

246810

VGS, Gate-Source Vol tage [V]

Figure 3. On-Resistance Variation vs. Figure 4. Body Diode Forward Voltage

Drain Current and Gate Voltage Variation vs. Source Current

and Temperatue

4.0

3.5

3.0

[Ω ],

2.5

DS(ON)

R

2.0

Drain-Source On-Resistance

1.5

1.0
0 5 10 15 20

VGS = 10V

VGS = 20V

ID, Drai n Curr ent [A]

Note : T※J = 25℃

1

10

0

10

, Reverse Drain Current [A]

DR

I

-1

10

0.2 0. 4 0.6 0. 8 1.0 1.2 1.4

150℃

VSD, Source-Drain vol tage [V]

25℃

Notes :※

1. VGS = 0V

2. 250µ s Pul se Test

Figure 5. Capacitance Characteristics Figure 6. Gate Charge Characteristics

3000

2500

2000

1500

1000

Capacitance [pF]

500

0

-1

10

FQA8N90C_F109 Rev. A

C

iss

C

oss

C

rss

0

10

VDS, Drai n-Source Voltage [ V]

C

= Cgs + Cgd (Cds = short ed)

iss

C

= Cds + C

oss

gd

C

= C

rss

gd

Notes :※

1. VGS = 0 V

2. f = 1 MHz

1

10

12

10

8

6

4

, Gate-Source Voltage [V]

GS

2

V

0

0 5 10 15 20 25 30 35 40

VDS = 720V

QG, Total Gate Charge [nC]

3 www.fairchildsemi.com

VDS = 180V

VDS = 450V

Note : I※D = 8A