Datasheet

DocID14419 Rev 9 3/32
VIPER17 Block diagram
32
1 Block diagram
2 Typical power
Figure 2. Block diagram
THE RMAL
SHUTDOWN
6uA
LEB
&
OVP
LOGIC
SOFT
START
OCP
BLOCK
Ref
TUR N-ON
LOGIC
DRAIN
SUPPLY
& UVLO
OTPOLP
BURST
Internal Supply bus
BR
BURST-MODE
LOGIC
BURST
S
R1
R2
Q
-
+
UVLO
Vin_OK
+
-
OCP
Ref erence Voltages
OVP
15uA
I
DDch
OVP
Vcc
OSCI LLATOR
FB
V
BRth
HV_ON
OTP
.
GND
+
-
Rsense
CONT
+
-
PWM
2nd OCP
LOGIC
VDD
Table 2. Typical power
Part number
230 V
AC
85-265 V
AC
Adapter
(1)
Open frame
(2)
Adapter
(1)
Open frame
(2)
VIPER17 9 W 10 W 5 W 6 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.