Vishay 8ETL06FPPbF Manual do Utilizador descarregar pdf (Página 4)

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Document Number: 94028

4 Revision: 08-Apr-08

8ETL06PbF/8ETL06FPPbF

Vishay High Power Products

Ultralow V

Hyperfast Rectifier for

Discontinuous Mode PFC, 8 A FRED Pt

Fig. 5 - Maximum Thermal Impedance Z

thJC

Characteristics (FULL-PAK)

Fig. 6 - Maximum Allowable Case Temperature vs.

Average Forward Current

Fig. 7 - Maximum Allowable Case Temperature vs.

Average Forward Current (FULL-PAK)

Fig. 8 - Forward Power Loss Characteristics

Note

(1)

Formula used: T

= T

- (Pd + Pd

REV

) x R

thJC

;

Pd = Forward power loss = I

F(AV)

x V

at (I

F(AV)

/D) (see fig. 8);

REV

= Inverse power loss = V

x I

(1 - D); I

at V

= Rated V

0.01

0.1

0.00001 0.0001 0.001 0.01 0.1 1

- Rectangular Pulse Duration (s)

thJC

- Thermal Impedance (°C/W)

Notes:

1. Duty factor D = t

2. Peak T

= P

x Z

thJC

+ T

Single pulse

(thermal resistance)

10 100

D = 0.50

D = 0.20

D = 0.10

D = 0.05

D = 0.02

D = 0.01

02 6 10 14

Allowable Case Temperature (°C)

F(AV)

- Average Forward Current (A)

150

160

165

170

175

180

155

Square wave (D = 0.50)

Rated V

applied

See note (1)

02 6 10 14

Allowable Case Temperature (°C)

F(AV)

- Average Forward Current (A)

100

120

140

160

180

Square wave (D = 0.50)

Rated V

applied

See note (1)

02 6 1012

Average Power Loss (W)

F(AV)

- Average Forward Current (A)

D = 0.01

D = 0.02

D = 0.05

D = 0.10

D = 0.20

D = 0.50

RMS limit

1 2 3 4 5 6 7

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