IRFR420B - Fairchild Semiconductor

March 2001

Rev. A, March 2001

IRFR420B / IRFU420B

500V N-Ch anne l MOSFET

General Description

These N-Channel enhancement mode power field effect

transistors are produced using Fairchild’s proprietary,

planar, 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 efficiency switch mode power supplies,

power factor correction and electronic lamp ballasts based

on half bridge.

Features

• 2.3A, 500V, RDS(on) = 2.6Ω @VGS = 10 V

• Low gate charge ( typical 14 nC)

• Low Crss ( typical 10 pF)

• Fast switching

• 100% avalanche tested

• Improved dv/dt capability

Absolute Maximum Ratings TC = 25°C unless otherwise noted

Thermal Characteristics

Symbol Parameter IRFR420B / IRFU420B Units

VDSS Drain-Source Voltage 500 V

IDDrain Current - Continuous (TC = 25°C) 2.3 A

- Continuous (TC = 100°C) 1.5 A

IDM Drain Current - Pulsed (Note 1) 8.0 A

VGSS Gate-Source Voltage ± 30 V

EAS Single Pulsed Avalanche Energy (Note 2) 200 mJ

IAR Avalanche Current (Note 1) 2.3 A

EAR Repetitive Avalanche Energy (Note 1) 4.1 mJ

dv/dt Peak Diode Recovery dv/dt (Note 3) 4.0 V/ns

PDPower Dissipation (TA = 25°C) * 2.5 W

Power Dissipation (TC = 25°C) 41 W

- Derate above 25°C 0.33 W/°C

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

TLMaximum lead temperature for soldering purposes,

1/8" from case for 5 seconds 300 °C

Symbol Parameter Typ Max Units

RθJC Thermal Resistance, Junction-to-Case -- 3.05 °C/W

RθJA Thermal Resistance, Junction-to-Ambient * -- 50 °C/W

RθJA Thermal Resistance, Junction-to-Ambient -- 110 °C/W

* When mounted on the minimum pad size recommended (PCB Mount)

I-PAK

IRFU Series

D-P AK

IRFR Series GS

Rev. A, March 2001

IRFR420B / IRFU420B

(Note 4)

(Note 4, 5)

(Note 4)

Electrical Characteristics TC = 25°C unless otherwise noted

Notes:

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

2. L = 68mH, IAS = 2.3A, VDD = 50V, RG = 25 Ω, Starting TJ = 25°C

3. ISD ≤ 2.5A, di/dt ≤ 200A/µs, VDD ≤ BVDSS, Starting TJ = 25°C

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

5. Essentially independent of operating temperature

Symbol Parame ter Test Conditions Min Typ Max Units

Off Characteristics

BVDSS Drain-S ource Breakdown Voltage VGS = 0 V, ID = 250 µA500 -- -- V

∆BVDSS

/ ∆TJ

Breakdown Voltage Temperature

Coefficient ID = 250 µA, Referenced to 25°C -- 0.54 -- V/°C

IDSS Zero Gate Voltage Drain Current VDS = 500 V, VGS = 0 V -- -- 10 µA

VDS = 400 V, TC = 125°C -- -- 100 µA

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

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

On Characteri st ics

VGS(th) G ate Threshold Voltage VDS = VGS, ID = 250 µA2.0 -- 4.0 V

RDS(on) Static Drain-Source

On-Resistance VGS = 10 V, ID = 1.15 A -- 2.1 2.6 Ω

gFS Forward Transconductance VDS = 40 V, ID = 1.15 A -- 2.7 -- S

Dynamic Characteristics

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

f = 1.0 MHz

-- 470 610 pF

Coss Output Capacitance -- 45 60 pF

Crss Reverse Transfer Capacitance -- 10 15 pF

Switching Characteristics

td(on) Turn-On Delay Time VDD = 250 V, ID = 2.5 A,

RG = 25 Ω

-- 10 30 ns

trTurn-On Rise Time -- 30 70 ns

td(off) Turn-Off De l a y Time -- 40 90 ns

tfTurn-Off F a ll Time -- 35 80 ns

QgTotal Gate Charge VDS = 400 V, ID = 2.5 A,

VGS = 10 V

-- 14 18 nC

Qgs Gate-Source Charge -- 2.4 -- nC

Qgd Gate-Drain Charge -- 5.8 -- nC

Drain-Source Diode Charac teristics and Maximum Ratings

ISMaximum Continuous Drain-Source Diode Forward Current -- -- 2.3 A

ISM Maximum Pulsed Drain-Source Diode Forward Current -- -- 8.0 A

VSD Drain-Source Diode Forward V olt age VGS = 0 V, IS = 2.3 A -- -- 1.4 V

trr Reverse Recovery Time VGS = 0 V, IS = 2.5 A,

dIF / dt = 100 A/µs

-- 260 -- ns

Qrr Reverse Recovery Charge -- 1.56 -- µC

IRFR420B / IRFU420B

0246810

VGS = 20V

VGS = 10V

$ N o te : TJ = 25%

RDS(ON) [&],

Drain-Source On-Resistance

ID, Drain Current [A]

246810

10-1

100150oC

25oC

-55oC

$ Note s :

1. VDS = 40V

2. 250's P ulse Test

ID, Drain Current [A]

VGS, Gate-Source Voltage [V]

10-1 100101

10-1

100

V GS

Top : 1 5 .0 V

1 0 .0 V

8 .0 V

7 .0 V

6 .5 V

6 .0 V

5 .5 V

Bottom : 5.0 V

$ N otes :

1. 250 's Pulse Test

2. TC = 25%

ID, Drain Current [A]

VDS, Drain-Source Voltage [V]

0 3 6 9 12 15

VDS = 250V

VDS = 100V

VDS = 400V

$ Note : ID = 2.5 A

VGS, Gate-Source Voltage [V]

QG, T o ta l G a te Cha rg e [n C ]

10-1 100101

200

400

600

800

1000

Coss

Ciss = Cgs + Cgd (C ds = shorted)

Coss = Cds + Cgd

Crss = Cgd

$ N otes :

1. VGS = 0 V

2. f = 1 MHz

Crss

Ciss

Capacitance [pF]

VDS, Drain-Source Voltage [V]

0.2 0.4 0.6 0.8 1.0 1.2

10-1

100

150%

$ N otes :

1. VGS = 0V

2. 250 's Pulse Test

25%

IDR, Reverse Drain Current [A]

VSD, So urce -D rain vo ltage [V ]

Typical Characteristics

Figure 5. Capacitance Cha rac te ri st ics Figure 6. Gate Char ge C haracter is tics

Figure 3. On-Resistanc e Variation vs

Drain Current and Gate Voltage Figure 4. Body Diode Fo rwa rd Voltage

Va riation with Source Cur r ent

and Temperature

Figure 2. Transfer CharacteristicsFigure 1. On- R egi on Charact er i st ics

IRFR420B / IRFU420B

100101102103

10-2

10-1

100

101

10 µs

DC 10 ms 1 m s

100 µs

Operation in This Area

is Limited by R DS(on)

$ N otes :

1. TC = 25 oC

2. TJ = 15 0 oC

3. Single Pulse

ID, Drain Current [A]

VDS, Drain-Source Voltage [V]

10-5 10-4 10-3 10-2 10-1 100101

10-1

100$ Notes :

1 . Z(JC(t) = 3 .05 %/W Ma x .

2 . Duty F a cto r, D = t1/t2

3 . TJM - TC = PDM * Z(JC(t)

s in g le p u ls e

D=0.5

0.02

0.2

0.05

0.1

0.01

Z(JC

(t), T he r mal Res p o ns e

t1, Square Wave Pulse D uration [sec]

25 50 75 100 125 150

0.0

0.5

1.0

1.5

2.0

2.5

ID, D ra in Curre n t [A ]

TC, Case Temperature [%

]

-100 -50 0 50 100 150 200

0.0

0.5

1.0

1.5

2.0

2.5

3.0

$ N o te s :

1 . V GS = 10 V

2 . ID = 1.25 A

RDS(ON) , (Normalized)

Drain-Source On-Resistance

TJ, Junction Tem perature [oC]

-100 -50 0 50 100 150 200

0.8

0.9

1.0

1.1

1.2

N o te s :

1 . V GS = 0 V

2 . ID = 250 'A

BV DSS , (No r ma liz e d )

Drain-Source Breakdown Voltage

TJ, Junction Tem perature [oC]

Typical Characteristics (Continued)

Figure 9. Maximum Safe Operating Area Figure 10. Maximum Drain Current

vs Case Temperature

Figu re 7. Brea kdown Vol tage Variatio n

vs Temperature Figure 8. On-Resistance Variation

vs Temperature

Figure 11. Transient Ther m al Res pons e Cur ve

PDM

IRFR420B / IRFU420B

Charge

VGS

10V Qg

Qgs Qgd

3mA

VGS

DUT

VDS

300nF

50K)

200nF

12V

Same Type

as DUT

Charge

VGS

10V Qg

Qgs Qgd

3mA

VGS

DUT

VDS

300nF

50K)

200nF

12V

Same Type

as DUT

VGS

VDS

10%

90%

td(on) tr

ton toff

td(off) tf

VDD

10V

VDS RL

DUT

VGS

VDS

10%

90%

td(on) tr

ton toff

td(off) tf

VDD

10V

VDS RL

DUT

VGS

EAS =LI

AS2

----

1--------------------

BVDSS -V

BVDSS

VDD

VDS

BVDSS

t p

VDD

IAS

VDS (t)

ID (t)

Time

10V DUT

t p

EAS =LI

AS2

----

EAS =LI

AS2

----

1--------------------

BVDSS -V

BVDSS

VDD

VDS

BVDSS

t p

VDD

IAS

VDS (t)

ID (t)

Time

10V DUT

t p

Gate Charge Test Circuit & Waveform

Resistive Switching Test Circuit & Waveforms

Unclamped Inductive Switching Test Circuit & Waveforms

IRFR420B / IRFU420B

Peak Diode Recover y dv/dt Tes t Circuit & Waveforms

DUT

VDS

Driver

RGSame Type

as DUT

VGS • dv/dt controlled by RG

•I

SD con trol l ed by pulse peri od

VDD

ISD

10V

VGS

( Driver )

ISD

( DUT )

VDS

( DUT )

VDD

Body Diode

Forward Voltage Drop

VSD

IFM , Body Diode Forward Current

Body Diode Reverse Current

IRM

Body Diode Recovery dv/dt

di/dt

D = Gate Pulse Width

Gate Pu lse P eri od

--------------------------

DUT

VDS

Driver

RGSame Type

as DUT

VGS • dv/dt controlled by RG

•I

SD con trol l ed by pulse peri od

VDD

ISD

10V

VGS

( Driver )

ISD

( DUT )

VDS

( DUT )

VDD

Body Diode

Forward Voltage Drop

VSD

IFM , Body Diode Forward Current

Body Diode Reverse Current

IRM

Body Diode Recovery dv/dt

di/dt

D = Gate Pulse Width

Gate Pu lse P eri od

--------------------------

D = Gate Pulse Width

Gate Pu lse P eri od

--------------------------

IRFR420B / IRFU420B

Package Dimensions

6.60 ±0.20

2.30 ±0.10

0.50 ±0.10

5.34 ±0.30

0.70 ±0.20

0.60 ±0.20

0.80 ±0.20

9.50 ±0.30

6.10 ±0.20

2.70 ±0.20 9.50 ±0.30

6.10 ±0.20

2.70 ±0.20

MIN0.55

0.76 ±0.10 0.50 ±0.10

1.02 ±0.20

2.30 ±0.20

6.60 ±0.20

0.76 ±0.10

(5.34)

(1.50)

(2XR0.25)

(5.04)

0.89 ±0.10

(0.10) (3.05)

(1.00)

(0.90)

(0.70)

0.91 ±0.10

2.30TYP

[2.30±0.20]

2.30TYP

[2.30±0.20]

MAX0.96

(4.34)(0.50) (0.50)

DPAK

IRFR420B / IRFU420B

Package Dimensions (Continued)

6.60 ±0.20

0.76 ±0.10

MAX0.96

2.30TYP

[2.30±0.20] 2.30TYP

[2.30±0.20]

0.60 ±0.20

0.80 ±0.10

1.80 ±0.20

9.30 ±0.30

16.10 ±0.30

6.10 ±0.20

0.70 ±0.20

5.34 ±0.20

0.50 ±0.10

2.30 ±0.20

(0.50) (0.50)(4.34)

IPAK

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device or system, or to affect its safety or effectiveness.

PRODUCT STATUS DEFINITIONS

Definition of Terms

Datasheet Identification Product Status Definition

Advance Information Formative or In

Design This datasheet contains the design specifications for

product development. Specifications may change in

any manner without notice.

Preliminary First Production This datasheet contains preliminary data, and

supplementary data will be published at a later date.

Fairchild Semiconduct or reserv es the right to make

changes at any time without notice in order to improve

design.

No Identification Needed Full Production This datasheet contains final specifications. Fairchild

Semiconductor reserves the right to make changes at

any time without notice in order to improve design.

Obsolete Not In Production This datasheet contains specifications on a product

that has been discontinued by Fairchild semiconductor.

The datasheet is printed for reference information only.

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