VIPER15LDTR STMicroelectronics, VIPER15LDTR Datasheet - Page 5

• Manufacturer Part Number: VIPER15LDTR
• Description: IC OFFLINE CONV PWM OVP 16SOIC
• Manufacturer: STMicroelectronics
• Series: VIPer™ plusr

Specifications of VIPER15LDTR

• Output Isolation: Isolated
• Frequency Range: 122 ~ 150kHz
• Voltage - Input: 8.5 ~ 23.5 V
• Voltage - Output: 800V
• Power (watts): 12W
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-10063-2

VIPER15
3
Note:
Pin settings
Figure 3.
The copper area for heat dissipation has to be designed under the DRAIN pins.
Table 3.
DIP-7 SO16
7,8
1
2
3
4
5
-
Pin n.
13...16 DRAIN
1...2
4
5
6
7
8
Connection diagram (top view)
Pin description
Name
GND
VDD
ZCD
N.A.
BR
FB
This pin represents the device ground and the source of the power section.
Not available for user. It can be connected to GND (pins 1-2) or left not
connected.
Supply voltage of the control section. This pin also provides the charging
current of the external capacitor during power-up.
This is a multifunction pin.
1. Input for the zero current detection circuit for transformer demagnetization
sensing. (i.e. R
2. User defined drain current limit set-point and voltage feed forward.The
resistor, R
I
3. The resistor R
the feed-forward operation and then the drain current limitation changes
according to the converter input voltage.
4. Output overvoltage protection. A voltage exceeding V
(see
consumption. This function is strobed and digitally filtered for high noise
immunity.
Control input for duty cycle control. Internal current generator provides bias
current for loop regulation. A voltage below the threshold V
the burst-mode operation. A level close to the threshold V
we are approaching the cycle-by-cycle overcurrent set point.
Brownout protection input with hysteresis. A voltage below the threshold
V
Device operation restarts as the voltage exceeds the threshold V
V
High voltage drain pin. The built-in high voltage switched start-up bias
current is drawn from this pin too. Pins connected to the metal frame to
facilitate heat dissipation.
ZCD
BRth
BRhyst
and then it limits the static maximum drain current.
Table 8 on page
shuts down (not latch) the device and lowers the power consumption.
. It can be connected to ground when not used.
Doc ID 15455 Rev 5
LIM
, connected between ZCD pin and GND causes the current
LIM
FF
, R
, between ZCD pin and the auxiliary winding, performs
FF
8), shuts the IC down reducing the device
, R
OVP
and D
Function
OVP
,
Figure
32)
OVP
FBlin
FBbm
threshold,
means that
Pin settings
activates
BRth
+
5/40