Fairchild FDP8874 service manual

N

May 2008

FDP8874

N-Channel PowerTrench® MOSFET 30V, 114A, 5.3mΩ

General Description

This N-Channel MOSFET has been designed specifically to improve the overall efficiency of DC/DC converters using either synchronous or conventional switching PWM controllers. It has been optimized for low gate charge, low r

and fast switching speed.

DS(ON)

Applications

• DC/DC converters

(FLANGE)

DRAIN

TO-220AB

FDP SERIES

MOSFET Maximum Ratings T

Symbol Parameter Ratings Units

V V

I

E P T

D

DSS GS

AS

D

, T

J

STG

Drain to Source Voltage 30 V Gate to Source Voltage ±20 V Drain Current Continuous (T Continuous (T Continuous (T

= 25oC, VGS = 10V) (Note 1)

C

= 25oC, VGS = 4.5V) (Note 1) 102 A

C

= 25oC, VGS = 10V, with R

amb

Pulsed Figure 4 A Single Pulse Avalanche Energy (Note 2) 105 mJ Power dissipation 110 W Derate above 25

o

C0.73W/

Operating and Storage Te mperature -55 to 175

SOURCE

DRAIN

GATE

= 25°C unless otherwise noted

C

Features

•r

• High performance trench technology for extremely low

• Low gate charge

• High power and current handling capability

•

RoHS Compliant

= 62oC/W) 16 A

θJA

DS(ON)

r

DS(ON)

= 5.3mΩ, V = 6.6mΩ, V

G

= 10V, ID = 40A

GS

= 4.5V, ID = 40A

GS

D

S

114 A

tmM

o

C

o

C

Thermal Characteristics

R

θJC

R

θJA

Thermal Resistance Junction to Case TO-220 1.36 Thermal Resistance Junction to Ambient TO-220 ( Note 3) 62

Package Marking and Ordering Information

Device Marking Device Package Reel Size Tape Width Quantity

FDP8874 FDP8874 TO-220AB Tube N/A 50 units

o

C/W

o

C/W

FDP8874 Rev. A3

FDP8874

Electrical Characteristics T

= 25°C unless otherwise noted

C

Symbol Parameter Tes t Cond itions Min Typ Max Units

Off Characteristics

B

VDSS

I

DSS

I

GSS

Drain to Source Breakdown Voltage ID = 250µA, VGS = 0V 30 - - V

V

= 24V - - 1

Zero Gate Voltage Drain Current

DS

= 0V TC = 150oC - - 250

V

GS

Gate to Source Leakage Current VGS = ±20V - - ±100 nA

On Characteristics

V

GS(TH)

r

DS(ON)

Gate to Source Threshold Voltage VGS = VDS, ID = 250µA 1.2 - 2.5 V

I

= 40A, VGS = 10V - 0.0036 0.0053

D

= 40A, VGS = 4.5V - 0.0045 0.0066

I

Drain to Source On Resistance

D

I

= 40A, VGS = 10V,

D

= 175oC

T

J

- 0.0062 0.0090

Dynamic Characteristics

C

ISS

C

OSS

C

RSS

R

G

Q

g(TOT)

Q

g(5)

Q

g(TH)

Q

gs

Q

gs2

Q

gd

Input Capacitance Output Capacitance - 590 - pF Reverse Transfer Capacitance - 345 - pF

= 15V, VGS = 0V,

V

DS

f = 1MHz

Gate Resistance VGS = 0.5V, f = 1MHz - 1.9 - Ω Total Gate Charge at 10V VGS = 0V to 10V Total Gate Charge at 5V VGS = 0V to 5V - 30 38 nC

V

= 15V

Threshold Gate Charge VGS = 0V to 1V - 3.0 4.0 nC Gate to Source Gate Charge - 9.0 - n C Gate Charge Threshold to Plateau - 6.0 - nC

DD

= 40A

I

D

= 1.0mA

I

g

Gate to Drain “Miller” Charge - 11 - nC

- 3130 - pF

-5672nC

µA

Ω

Switching Characteristics

t

ON

t

d(ON)

t

r

t

d(OFF)

t

f

t

OFF

Turn-On Time Turn-On Delay Time - 10 - ns Rise Time - 128 - ns Turn-Off Delay Time - 44 - ns Fall Time - 31 - n s Turn-Off Time - - 112 ns

(VGS = 10V)

Drain-Source Diode Characteristics

V

SD

t

rr

Q

RR

Notes: 1: Package current limitation is 80A. 2: Starting T 3: Pulse width = 100s. 4

Source to Drain Diode Voltage Reverse Recovery Time ISD = 40A, dISD/dt = 100A/µs- -32ns

Reverse Recovered Charge ISD = 40A, dISD/dt = 100A/µs- -18nC

= 25°C, L = 51uH, IAS = 64A, VDD = 27V, VGS = 10V.

J

- - 207 ns

= 15V, ID = 40A

V

DD

= 4.5V, RGS = 4.7Ω

V

GS

I

= 40A - - 1.25 V

SD

I

= 20A - - 1.0 V

SD

FDP8874

Typical Characteristics T

= 25°C unless otherwise noted

C

1.2

1.0

0.8

0.6

0.4

0.2

POWER DISSIPATION MULTIPLIER

0

0 25 50 75 100 175

125

150

TC, CASE TEMPERATURE (oC)

Figure 1. Normali ze d Po we r Dis sip ation vs Case

Temperature

2

DUTY CYCLE - DESCENDING ORDER

0.5

1

0.2

0.1

0.05

0.02

0.01

0.1

, NORMALIZED

θJC

Z

THERMAL IMPEDANCE

0.01

-5

10

SINGLE PULSE

-4

10

-3

10

t, RECTANGULAR PULSE DURATION (s)

125

CURRENT LIMITED BY PACKAGE

100

75

VGS = 4.5V

VGS = 10V

50

, DRAIN CURRENT (A)

D

I

25

0

25 50 75 100 125 150 175

TC, CASE TEMPERATURE (oC)

Figure 2. Maximum Contin uous Drain Current vs

Case Temperature

P

DM

t

1

t

x R

θJC

+ T

2

C

1

10

NOTES: DUTY FACTOR: D = t

PEAK TJ = PDM x Z

-2

10

-1

10

θJC

10

1/t2

0

Figure 3. Normalized Maximum Transient Thermal Impedance

1000

TRANSCONDUCTANCE MAY LIMIT CURRENT IN THIS REGION

VGS = 4.5V

VGS = 10V

, PEAK CURRENT (A)

DM

I

100

50

-5

10

-4

10

-3

10

-2

10

-1

10

t, PUL SE WIDTH (s)

TC = 25oC FOR TEMPERATURES

o

ABOVE 25

C DERATE PEAK

CURRENT AS FOLLOWS:

175 - T

I = I

25

10

C

150

0

1

10

Figure 4. Peak Current Capability