TDA7278 データシートの表示（PDF） - STMicroelectronics

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TDA7278

HIGH-EFFICIENCY CD ACTUATOR DRIVER

STMicroelectronics 

TDA7278

SUGGESTED VALUES FOR OUTPUT FILTER AND COMPENSATION NETWORK

DC- DC COVERTER

CONFIGURATIONS

OUTPUT FILTER (see fig. 3)

COMPENSATION (see fig. 4)

a) DOMINANT POLE

STEP-DOWN

L = 47µH

C = 47µF

R = 50KΩ

Cf = 47nF

R4 = 35KΩ

b) 2 ZERO, 2 POLE

R2 = 11.18KΩ

R3 = 100 KΩ

C2 = 936pF

Rf = 16.65KΩ

Cf = 5.6nF

R4 = 70KΩ

a) DOMINANT POLE

STEP-UP

AND

TRANSFORM ER

L = 47µH

C = 47µF

R = 100KΩ

Cf = 220nF

R4 = 70KΩ

c) 2 ZERO, 3 POLE

R1 = 500Ω

C1 = 18nF

R2 = 20.8KΩ

R3 = 250KΩ

C2 = 636pF

Rf = 21.4KΩ

Cf = 7.44nF

R4 = 200KΩ

c) 2 ZERO, 3 POLE

L = 11µH

C = 47µF

R1 = 500Ω

C1 = 18nF

R2 = 10.4KΩ

R3 = 250KΩ

C2 = 318pF

Rf = 21.4KΩ

Cf = 3.7nF

R4 = 200KΩ

PINS: 1, 2, 44

PINS: 8, 7,9

12V

1

2

44

VHIGH

+

-

VHIGH

D96AU447A

12V

8

7

9

VHIGH

+

-

VHIGH

D96AU448A

9/15

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