TK65920 Ver la hoja de datos (PDF) - Toko America Inc

Número de pieza

componentes Descripción

Fabricante

TK65920

MEDIUM EL LAMP DRIVER

Toko America Inc  

TK6592x

DESIGN CONSIDERATIONS (CONT.)

requirements, the following charts will suggest the TK6593x family of EL Drivers which have higher drive capabilities.

To utilize the following charts in selecting an appropriate coil, perform the following steps:

1) From the following charts, select the chart that matches the part number of the Toko EL Driver that will be used in

the application. The part number of the Toko EL Driver will be dependant upon the desired frequency of the EL panel

(e.g., TK65921 = 200Hz).

2) Determine input supply voltage range (e.g., 4 to 6 V). The x-axis of the following charts represent the minimum

expected supply voltage. Below this minimum supply voltage the EL Driver output may begin to droop. On the

appropriate chart, draw a vertical line upward from the minimum supply voltage represented on the x-axis (e.g., 4V).

3) Draw a horizontal line passing through the chosen inductor value on the y-axis (e.g., 680 µH).

4) The vertical and horizontal lines drawn in steps 2 and 3 respectively will intersect at a point. This point will lie in one

of four regions of the chart (e.g., D31FU). These four regions suggest which family of Toko Coils to use.

Of the three coil families suggested in these charts, the D31FU has the smallest physical size but also has higher DC

resistance. The D52FU series of coils has the largest physical size and the lowest DC resistance. The D52FU or the

D32FU can be used as a reasonable substitute for the D31FU. Similarly, the D52FU can be used as a replacement for

the D32FU. Substituting a coil with lower DC resistance will generally result in a system that will consume less power

supply current.

TK65920, TK65921

TK65922, TK65923

TK65924, TK65925

2200

1800

1500

1200

1000

820

680

560

470

390

USE TK6593X

D52FU

D32FU

X

D31FU

2200

1800

1500

1200

1000

820

680

560

470

390

USE TK6593X

D52FU

D32FU

D31FU

2200

1800

1500

1200

1000

820

680

560

470

390

USE TK6593X

D31FU

D52FU

D32FU

180

3

4

5

6

MINIMUM SUPPLY (V)

180

3

4

5

6

MINIMUM SUPPLY (V)

180

3

4

5

6

MINIMUM SUPPLY (V)

TK65926, TK65927

2200

1800

1500

1200

1000

820

680

560

470

390

USE TK6593X

D52FU

D31FU

D32FU

TK65928, TK65929

2200

1800

1500

1200

1000

820

680

560

470

390

USE TK6593X

D52FU

D31FU

D32FU

180

3

4

5

6

MINIMUM SUPPLY (V)

May 2000 TOKO, Inc.

180

3

4

5

6

MINIMUM SUPPLY (V)

Page 13

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