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VIPER318LDTR Datasheet(PDF) 13 Page - STMicroelectronics

No. de pieza VIPER318LDTR
Descripción Electrónicos  Energy saving offline high voltage converter
PDF  39 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VIPER318LDTR Datasheet(HTML) 13 Page - STMicroelectronics

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4
General description
4.1
Block diagram
Figure 23. Block diagram
VCC
DRAIN
Internal Supply bus
RSENSE
REGULATOR
4V
HV
Start up
THERMAL
DIODE
(OTP)
GND
HV DISABLE
LOGIC
SOFT START
JITTERED
OSCILLATOR
E/A
+
-
+
-
FB
VFB_REF
PWM
-
+
TURN ON
LOGIC
COMP
OCP
UVLO VCC
VCC_clamp
tOVL filter
LEB
S
R
Q
OTP
OCP
-
+
IDLIM ref
LIGHT LOAD PFM
PROTECTION
LOGIC
tRESTART
OVP LOGIC
tOVP_REST
OVP
TSD LOGIC
tRESTART
RG
Vz
IHV
ICH*
- VOVP_th
+
-
VUVP_th
tOVP_DEB filter
UVP
S
R
Q
IC DISABLE
LOGIC
IC_DIS
IC_DIS
tUVP_REST filter
IC_DIS_SET
IC_DIS_RESET
tUVP_DEB filter
+
4.2
Typical power capability
Table 8. Typical power
Vin: 230 VAC
Vin: 85-265 VAC
Adapter (1)
Open Frame (2)
Adapter (1)
Open Frame (2)
27 W
31 W
16 W
19 W
1. Typical continuous power in non-ventilated enclosed adapter measured at 50°C ambient.
2. Maximum practical continuous power in an open frame design at 50°C ambient, with adequate heat sinking.
VIPER31
General description
DS13285 - Rev 6
page 13/39



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