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VIPER38 Datasheet(PDF) 2 Page - STMicroelectronics

Part # VIPER38
Description  VIPerPlus family: peak power high-voltage converter
Download  31 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VIPER38 Datasheet(HTML) 2 Page - STMicroelectronics

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Contents
VIPER38
2/31
DocID025703 Rev 2
Contents
1
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2
Typical power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3
Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5
Typical electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6
Typical circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.1
Power section and gate driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.2
High-voltage startup generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.3
Power-up and soft startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.4
Power-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.5
Auto-restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.6
Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.7
Current mode conversion with adjustable current limit setpoint . . . . . . . . 18
7.8
Overvoltage protection (OVP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7.9
About CONT pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.10
Feedback and overload protection (OLP) . . . . . . . . . . . . . . . . . . . . . . . . 20
7.11
Burst-mode operation at no load or very light load . . . . . . . . . . . . . . . . . . 23
7.12
Extra power timer (EPT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.13
2nd level overcurrent protection and hiccup mode . . . . . . . . . . . . . . . . . . 24
8
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.1
SDIP10 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.2
SO16 Narrow package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
9
Order code
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
10
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30


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