VIPER37HE

Manufacturer Part NumberVIPER37HE
DescriptionAC/DC Switching Converters ViperPlus Fixed Freq 800V 30mQ 265 Vac
ManufacturerSTMicroelectronics
TypeOff Line Switcher
VIPER37HE datasheet
 


Specifications of VIPER37HE

Product CategoryAC/DC Switching ConvertersRohsyes
Input / Supply Voltage (max)23.5 VInput / Supply Voltage (min)8.5 V
Switching Frequency115 kHzSupply Current3.5 mA
Operating Temperature Range- 40 C to + 150 CMounting StyleThrough Hole
Package / CaseSDIP-10Maximum Operating Temperature+ 125 C
Minimum Operating Temperature- 25 CNumber Of Outputs1
Output Power25 W  
1
Page 1
2
Page 2
3
Page 3
4
Page 4
5
Page 5
6
Page 6
7
Page 7
8
Page 8
9
Page 9
10
Page 10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Page 1/35

Download datasheet (3Mb)Embed
Next
VIPerPlus family: fixed frequency offline converter
Features
800 V avalanche rugged power section
PWM operation with adjustable limiting current
30 mW standby power at 265 Vac
Operating frequency:
– 60 kHz for L type
– 115 kHz for H type
Frequency jittering for low EMC
Output overvoltage protection
High primary current protection (2
Input undervoltage setting (brownout)
Onboard soft-start
Safe auto-restart after a fault condition
Hysteretic thermal shutdown
Applications
SMPS for set-top boxes, DVD players and
recorders, white goods
Auxiliary power supply for consumer and home
equipment
ATX auxiliary power supply
Low / medium power AC-DC adapters
Table 1.
Device summary
Order codes
VIPER37LE
VIPER37HE
February 2012
SDIP10
Description
This device is an offline converter with an 800 V
rugged power section, a PWM control, two levels
of overcurrent protection, overvoltage and
nd
OCP)
overload protection, hysteretic thermal protection,
soft-start, and safe auto-restart after the removal
of any fault condition. Burst mode operation and
very low device consumption help to meet the
standby energy saving regulations.
Advance frequency jittering reduces EMI filter
costs. Brownout function protects the switch
mode power supply when the rectified input
voltage level is below the normal minimum level
specified for the system. The high voltage startup
circuit is embedded in the device.
Figure 1.
+
DC input high voltage
wide range
DRAIN
DRAIN
DRAIN DRAIN DRAIN
VIPER37
GND
VDD
CONT
Package
SDIP10
Doc ID 022218 Rev 1
VIPER37
Typical topology
DC Output voltage
FB
BR
Packaging
Tube
www.st.com
+
-
1/35
35