VIPER53EDIP-E Datasheet, PDF (1/31 Pages) STMicroelectronics – OFF-line Primary Switch

VIPer53EDIP - E
VIPer53ESP - E
OFF-line Primary Switch
Features
■ Switching frequency up to 300kHz
■ Current mode control with adjustable limitation
■ Soft start and shut-down control
■ Automatic burst mode in standby condition
(“Blue Angel“ compliant )
■ Undervoltage lockout with Hysteresis
■ Integrated start-up current source
■ Over-temperature protection
■ Overload and short-circuit control
■ Overvoltage protection
■ In compliance with the 2002/95/EC European
Directive
Description
The VIPer53E combines an enhanced current
mode PWM controller with a high voltage
MDMesh Power MOSFET in the same package.
Block diagram
OSC
PowerSO-10
DIP-8
Typical applications cover offline power supplies
with a secondary power capability ranging up to
30W in wide range input voltage, or 50W in single
European voltage range and DIP-8 package and
40W in wide range input voltage, or 65W in single
European voltage range and PowerSO-10
package, with the following benefits:
– Overload and short-circuit events
controlled by feedback monitoring and
delayed device reset;
– Efficient standby mode by enhanced pulse
skipping.
– Integrated start-up current source is
disabled during normal operation to reduce
the input power.
DRAIN
ON/OFF
OSCILLATOR
VDD
UVLO
COMPARATOR
8. 4/
11.5V
8V
OVERTEMP.
DETECTOR
PWM
LA TCH
R1 ^S
FF Q
R2
R3 R4 R5
125k
4V
BLANKING TIME
SELECTION
1V
PWM
COMPARATOR
150/400ns
BLANKING
0.5V
STANDBY
COMPARATOR
0.5V
OVERLOAD
COMPARATOR
4.4V
H_{C O MP}
CURRENT
AMPLIFIER
Vcc
I_{C OMP}
OVERVOLTAGE
COMPARATOR
18V
TOVL
January 2006
DocRev1
4.5V
COMP
SOURCE
1/31
www.st.com
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