STV9302 datasheet(8/15 Pages) STMICROELECTRONICS

部件名	STV9302

功能描述	VERTICAL DEFLECTION OUTPUT FOR MONITOR / TV 2 App / 60 V WITH FLYBACK GENERATOR

PDF	15 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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8 / 15 page

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STV9302A

8/15

CS performs an integration of the parabolic signal on CL, therefore the amount of S correction is set

by the combination of CL and Cs.

4.3

Application with Differential-output Drivers

Certain driver ICs provide the ramp signal in differential form, as two current sources i+ and i− with

opposite variations.

Let us set some definitions:

icm is the common-mode current:

at peak of signal, i+ =icm +ip and i− =icm -ip, therefore the peak differential signal is ip -(-

ip)=2ip, and the peak-peak differential signal, 4ip.

The application is described in Figure 7 with DC yoke coupling. The calculations still rely on the fact

that V1 remains equal to V7.

Figure 7: Using a Differential-output Driver

+Vs

Rd(*)

Yoke

-VEE

(*)

recommended:

µs

--------------Rd

µs

--------------

0.1µF

CF (47 to 100µF)

Power

Amplifier

Flyback

Generator

Thermal

Safety

470µF

Output

Current

Output

Voltage

Differential output

driver IC

icm

-ip

icm

1.5

Ω

---i

()

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