ST STTH20R04 User Manual

STTH20R04

High efficiency rectifier

Features

■ Ultrafast recovery

■ Low power losses

■ High surge capability

■ Low leakage current

■ High junction temperature

Description

The STTH20R04 is an ultrafast recovery power
rectifier dedicated to energy recovery in PDP
application.

It is especially designed for clamping function in
energy recovery block.

The compromise between forward voltage drop
and recovery time offers optimized performances.

KA

A

K

TO-220FPAC

STTH20R04FP

K

A

K

TO-220AC

STTH20R04D

Table 1. Device summary

I

F(peak)

V

RRM

(typ) 18 ns

t

rr

T

j

V

(typ) 1.15 V

F

K

DO-247

STTH20R04W

K

A

NC

2

PAK

D

STTH20R04G

20 A

400 V

175 °C

A

November 2007 Rev 1 1/10

www.st.com

10

Characteristics STTH20R04

1 Characteristics

Table 2. Absolute ratings (limiting values)

Symbol Parameter Value Unit

V

RRM

I

F(RMS)

I

F(peak)

I

FSM

T

Table 3. Thermal parameters

Repetitive peak reverse voltage 400 V

RMS forward current 50 A

= 135 °C δ = 0.5

T

Peak working

DO-247, TO-220AC, D2PA K

forward current

TO-220FPAC

c

Square signal

T

= 105 °C δ = 0.5

c

Square signal

Surge non repetitive forward current tp = 10 ms sinusoidal 150 A

Storage temperature range -65 to + 175 °C

stg

Maximum operating junction temperature 175 °C

T

j

20 A

Symbol Parameter Value Unit

2

PA K 2 .8

°C/W

R

th(j-c)

Table 4. Static electrical characteristics

Junction to case

DO-247, TO-220AC, D

TO-220FPAC 5

Symbol Parameter Test conditions Min Typ Max Unit

(1)

IR

V

F

1. Pulse test: tp = 5 ms, δ < 2%

2. Pulse test: t

Reverse leakage current

(2)

Forward voltage drop

= 380 µs, δ < 2%

p

= 25 °C

j

= 125 °C 20 200

T

j

Tj = 25 °C

= V

V

R

RRM

1.5 1.7

IF = 20 A

= 125 °C 1.15 1.35

T

j

20

µA

V

T

To evaluate the conduction losses use the following equation:
P = 1.05 x I

Table 5. Recovery characteristics

Symbol Parameter Test conditions Min Typ Max Unit

t

rr

t

fr

V

FP

I

RM

S

factor

Reverse recovery time Tj = 25 °C

Forward recovery time Tj = 25 °C

Peak forward voltage Tj = 25 °C IF = 20 A , dIF/dt = 100 A/µs 1.7 2.5 V

Reverse recovery current

Softness factor 0.3

F(AV)

+ 0.015 I

Tj = 125 °C

F2(RMS)

I

= 0.5 A, Irr = 0.25 A, IR = 1 A 18 25

F

= 1 A, VR = 30 V, dIF/dt = -50 A/µs 35 45

I

F

I

= 20 A, dIF/dt = 100 A/µs

F

VFR = 1.1 x V

I

= 20 A, VCC = 200 V

F

Fmax

811A

dIF/dt = 200 A/µs

150 ns

ns

2/10

STTH20R04 Characteristics

Figure 1. Conduction losses versus

average forward current

P(W)

35

30

25

20

15

10

5

0

0.0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0 22.5 25.0

δ=0.05

δ=0.1

I (A)

F(av)

δ=0.2

δ=0.5

δ

=tp/T

Figure 3. Relative variation of thermal

impedance junction to case versus
pulse duration

Z

th(j-c)/Rth(j-c)

1.0

Single pulse

0.9

TO-220AC

TO-247

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0.0

1.E-04 1.E-03 1.E-02 1.E-01 1.E+00

tP(s)

Figure 2. Forward voltage drop versus

forward current

I (A)

FM

δ=1

T

tp

200

180

160

140

120

100

80

60

40

20

0

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5

Tj=125°C

Tj=125°C

(Maximum values)

(Maximum values)

Tj=125°C

Tj=125°C

(Typical values)

(Typical values)

(Maximum values)

(Maximum values)

V (V)

FM

Tj=25°C

Tj=25°C

Figure 4. Relative variation of thermal

impedance junction to case versus
pulse duration

Z

th(j-c)/Rth(j-c)

1.0

Single pulse

0.9

TO-220FPAC

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0.0

1.E-03 1.E-02 1.E-01 1.E+00 1.E+01

tP(s)

Figure 5. Peak reverse recovery current

versus dI

I (A)

RM

18

IF=I

F(AV)

16

VR=200V

T

=125°C

j

14

12

10

8

6

4

2

0

0 50 100 150 200 250 300 350 400 450 500

/dt (typical values)

F

dI /dt(A/µs)

F

Figure 6. Reverse recovery time versus

dIF/dt (typical values)

t (ns)

rr

100

90

80

70

60

50

40

30

20

10

0

0 50 100 150 200 250 300 350 400 450 500

dI /dt(A/µs)

F

3/10

IF=I

F(AV)

VR=200V
T

=125°C

j