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AN1094 Datasheet(PDF) 3 Page - STMicroelectronics

Part # AN1094
Description  Solution for off-line SMPS using VIPer100-E
PDF  9 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN1094 Datasheet(HTML) 3 Page - STMicroelectronics

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AN1094
VIPer100-E major features
3/9
1
VIPer100-E major features
●
Adjustable Switching Frequency up to 200 kHz
●
Optimized for current mode control topology
●
Inherent feedforward compensation
●
Soft-start and enable functions
●
Overcurrent protection
●
Overtemperature protection
●
Overvoltage protection
●
Undervoltage lock-out with hysteresis
●
Low standby current
●
Integrated start-up supply
●
Automatic burst mode operation in standby condition
●
Internally trimmed BANDGAP reference
Figure 2.
Block diagram
bsolete
Product(s)
- Obsolete
Pro
duc
VDD
OSC
COMP
DRAIN
SOURCE
13 V
UVLO
LOGIC
SECURITY
LATCH
PWM
LATCH
FF
FF
R/S
S
Q
S
R1
R2 R3
Q
OSCILLATOR
OVERTEMP.
DETECTOR
ERROR
AMPLIFIER
_
+
0.5 V
+
_
1.7
µ s
DELAY
250 ns
BLANKING
CURRENT
AMPLIFIER
ON/OFF
0.5V
1 V/A
_
+
+
_
4.5 V



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