VIPER20A-E STMicroelectronics, VIPER20A-E Datasheet - Page 18

• Manufacturer Part Number: VIPER20A-E
• Description: IC SWIT SMPS CM OTP PENTAWATT5
• Manufacturer: STMicroelectronics
• Series: VIPER™r

Specifications of VIPER20A-E

• Output Isolation: Isolated
• Frequency Range: 90 ~ 200kHz
• Voltage - Input: 8 ~ 15 V
• Voltage - Output: 700V
• Power (watts): 57W
• Operating Temperature: 25°C ~ 125°C
• Package / Case: Pentawatt-5 HV (Bent and Staggered Leads)
• Number Of Outputs: 1
• Output Voltage: 700 V (Min)
• Output Current: 500 mA
• Mounting Style: Through Hole
• Switching Frequency: 200 KHz
• Fall Time: 100 ns
• Rise Time: 50 ns
• Synchronous Pin: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6796-5; VIPER20A-E

Operation description
Figure 14. Oscillator
18/34
Ct
Rt
OSC
C t
22nF
15nF
1,000
500
300
200
100
50
30
VDD
1
Ct = 1.5 nF
Ct = 4.7 nF
Ct = 2.7 nF
Ct = 10 nF
Forbidden area
2
Oscillator frequency vs Rt and Ct
3
Forbidden area
5
FC00050
Rt (k )
40kHz
CLK
10
Ct(nF) =
For R
20
FC00030
FC00030
Fsw(kHz)
t
> 1.2k and C
880
30
50
Fsw
t
40KHz
VIPer20A-E