STV9326 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

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STV9326

Vertical Deflection Booster for 3-APPTV/Monitor Applications with 60-V Flyback Generator

STMicroelectronics 

STV9326

4 Application Hints

Application Hints

The yoke can be coupled either in AC or DC.

4.1 DC-coupled Application

When DC coupled (see Figure 4), the display vertical position can be adjusted with input bias. On

the other hand, 2 supply sources (VS and -VEE) are required.

A Stand-by state will be reached by switching OFF the positive supply alone. In this state, where

both inputs are the same voltage as pin 2 or higher, the output will sink negligible current from the

deviation coil.

Figure 4: DC-coupled Application

0 470µF 0 0 0 0 0 0 0 0 00.1µF

CF (47 to 100µF)

+Vs Output

Voltage

Vref

Vertical Position

0 0 0 0 0 Adjustment 0 0 0 0 0

VM

R3

Vm

6

Power

Amplifier

7+

1-

3

2

Flyback

Generator

5

Thermal

Safety

4

-VEE

470µF00 00 00 00 00 00 00 00 00 0.1µF

Output

Current

Ip

1.5Ω Rd(*)

Yoke

Ly

R2

(*) recommended:

-5---0L----µy----s- < Rd < 2----0L----µy---s--

0000000000 R1

4.1.1 Application Hints

For calculations, treat the IC as an op-amp, where the feedback loop maintains V1 = V7.

5/14

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