VIPER53 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

VIPER53

OFF LINE PRIMARY SWITCH

STMicroelectronics 

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Figure 9: Oscillator Schematic and Settings

Vcc

VDD

Rt

OSC

320 Ω

Ct

SOURCE

PWM

section

VIPer53DIP / VIPer53SP

The switching frequency settings shown

on the graphic here below is valid within

the following boundaries:

Rt > 2kΩ

FSW < 300 kHz

Frequency (kHz)

300

2.2nF

4.7nF

1nF

100

10nF

22nF

10

1

10

100

RT (KΩ)

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