VIPER100 STMicroelectronics, VIPER100 Datasheet - Page 19

• Manufacturer Part Number: VIPER100
• Description: IC SWIT PWM SMPS CM PENTAWATT5
• Manufacturer: STMicroelectronics
• Series: VIPER™r

Specifications of VIPER100

• Output Isolation: Isolated
• Frequency Range: 90 ~ 200kHz
• Voltage - Input: 8 ~ 15 V
• Voltage - Output: 620V
• Power (watts): 82W
• Operating Temperature: 25°C ~ 125°C
• Package / Case: Pentawatt-5 HV (Bent and Staggered Leads)
• Output Voltage: 620 V
• Output Current: 2 A
• Input Voltage: 0 V to 15 V
• Switching Frequency: 200 KHz
• Operating Temperature Range: - 65 C to + 150 C
• Mounting Style: Through Hole
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-2714-5

VIPer100/SP - VIPer100A/ASP
Figure 26. Recommended Layout
Layout Considerations
Some simple rules insure a correct running of switching power supplies. They may be classified into two
categories:
- Minimizing power loops: The switched power current must be carefully analysed and the corresponding
paths must be as small an inner loop area as possible. This avoids radiated EMC noises, conducted EMC
noises by magnetic coupling, and provides a better efficiency by eliminating parasitic inductances,
especially on secondary side.
- Using different tracks for low level and power signals: Interference due to mixing of signal and power
may result in instabilities and/or anomalous behaviour of the device in case of violent power surge (Input
overvoltages, output short circuits...).
In case of VIPer, these rules apply as shown on (see Figure 26).
• Loops C1-T1-U1, C5-D2-T1, and C7-D1-T1 must be minimized.
• C6 must be as close as possible to T1.
• Signal components C2, ISO1, C3, and C4 are using a dedicated track connected directly to the power
source of the device.
diodes bridge
From input
C1
R1
C2
U1
VIPerXX0
OSC
13V
ISO1
VDD
-
+
C3
COMP
R2
C4
SOURCE
DRAIN
C5
D2
T1
C6
D1
FC00500
C7
filtering and load
To secondary
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