VIPER20-E STMicroelectronics, VIPER20-E Datasheet - Page 16

• Manufacturer Part Number: VIPER20-E
• Description: IC SWIT SMPS CM OTP PENTAWATT5
• Manufacturer: STMicroelectronics
• Series: VIPER™r

Specifications of VIPER20-E

• Output Isolation: Isolated
• Frequency Range: 90 ~ 200kHz
• Voltage - Input: 8 ~ 15 V
• Voltage - Output: 620V
• Power (watts): 57W
• Operating Temperature: 25°C ~ 125°C
• Package / Case: Pentawatt-5 HV (Bent and Staggered Leads)
• Mounting Style: Through Hole
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6794-5; VIPER20-E

5 Operation Description
Figure 11. Behaviour of the high voltage current source at start-up
Figure 12. Start-Up Waveforms
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VDDoff
VDDon
VDD
t
Auxiliary primary
winding
15 mA
C
2 mA
VDD
VDD
VIPer20
Start up duty cycle ~ 12%
1 mA
UNDERVOLTAGE
LOCK OUT LOGIC
Ref.
15 mA
3 mA
VIPer20-E/DIP-E
DRAIN
SOURCE
FC00101A