VIPER50SP STMicroelectronics, VIPER50SP Datasheet - Page 8

• Manufacturer Part Number: VIPER50SP
• Description: IC SWIT PWM SMPS CM POWERSO10
• Manufacturer: STMicroelectronics
• Series: VIPER™r

Specifications of VIPER50SP

• Output Isolation: Isolated
• Frequency Range: 90 ~ 200kHz
• Voltage - Input: 8 ~ 15 V
• Voltage - Output: 620V
• Power (watts): 60W
• Operating Temperature: 25°C ~ 125°C
• Package / Case: PowerSO-10 Exposed Bottom Pad
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-2715-5

Figure 9:
Ct
Rt
Oscillator
OSC
VDD
1,000
C t
500
300
200
100
22nF
15nF
50
30
1
Ct = 1.5 nF
Ct = 2.7 nF
Ct = 4.7 nF
Ct = 10 nF
Forbidden area
2
Oscillator frequency vs Rt and Ct
3
FC00050
CLK
Forbidden area
5
Rt (k )
40kHz
10
For R
and
C
Ct(nF) =
F SW
t
15nF if F
t
Fsw(kHz)
>1.2K
880
=
20
----------- -
R
FC00030
FC00030
2.3
t
VIPer50/SP - VIPer50A/ASP
30
C
SW
t
Fsw
1
50
40KHz
–
--------------------- -
R
t
550
–
150
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