VIPER53-E STMicroelectronics, VIPER53-E Datasheet - Page 12

• Manufacturer Part Number: VIPER53-E
• Description: Fixed frequency off line converter
• Manufacturer: STMicroelectronics

Operation pictures
12/36
Figure 12. Oscillator schematic
The switching frequency settings shown on the graphic here below is valid within the
following boundaries:
Figure 13. Oscillator settings
R
F
SW
t
> 2k
= 300kHz
Frequency (kHz)
100
300
10
1
Rt
Ct
2.2nF
4.7nF
10nF
22nF
OSC
320
SOURCE
VDD
Vcc
R
T
10
(K )
1nF
section
PWM
100
VIPer53 - E