IC OFFLINE SWIT OTP HV 8SOIC

LNK564DN-TL

Manufacturer Part NumberLNK564DN-TL
DescriptionIC OFFLINE SWIT OTP HV 8SOIC
ManufacturerPower Integrations
SeriesLinkSwitch®-LP
LNK564DN-TL datasheet
 

Specifications of LNK564DN-TL

Output IsolationIsolatedFrequency Range93 ~ 107kHz
Voltage - Output700VPower (watts)3W
Operating Temperature-40°C ~ 150°CPackage / Case8-SOIC (0.154", 3.90mm Width) 7 leads
Input / Supply Voltage (max)265 VACInput / Supply Voltage (min)85 VAC
Duty Cycle (max)70 %Switching Frequency100 kHz
Supply Current160 uAOperating Temperature Range- 40 C to + 150 C
Mounting StyleSMD/SMTLead Free Status / RoHS StatusLead free / RoHS Compliant
Other names596-1137-2  
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LNK562-564
TOP VIEW
T r a n s f o r m e r
Output Filter
Capacitor
Figure 6. Recommended Circuit Board Layout for LinkSwitch-LP using P Package (Assumes a HVDC Input Stage).
LinkSwitch-LP Layout Considerations
Layout
See Figure 6 for a recommended circuit board layout for
LinkSwitch-LP (P & G package).
Single Point Grounding
Use a single point ground connection from the input fi lter
capacitor to the area of copper connected to the SOURCE pins.
Bypass Capacitor (C
)
BP
The BYPASS pin capacitor should be located as near as possible
to the BYPASS and SOURCE pins.
Primary Loop Area
The area of the primary loop that connects the input fi lter
capacitor, transformer primary and LinkSwitch-LP together
should be kept as small as possible.
Primary Clamp Circuit
An external clamp may be used to limit peak voltage on the
6
Rev. H 11/08
FB
D
BP
S
S
S
S
+
DC
OUT
-
Maximize hatched copper
areas (
heatsinking
DRAIN pin at turn off. This can be achieved by using an RCD
clamp or a Zener (~200 V) and diode clamp across the primary
winding. In all cases, to minimize EMI, care should be taken
to minimize the circuit path from the clamp components to the
transformer and LinkSwitch-LP.
Thermal Considerations
The copper area underneath the LinkSwitch-LP acts not only as
a single point ground, but also as a heatsink. As it is connected
to the quiet source node, this area should be maximized for
good heat sinking of LinkSwitch-LP. The same applies to the
cathode of the output diode.
Y-Capacitor
The placement of the Y-type cap should be directly from the
primary input fi lter capacitor positive terminal to the common/
return terminal of the transformer secondary. Such a placement
will route high magnitude common-mode surge currents away
from the LinkSwitch-LP device. Note: If an input pi (C, L, C)
EMI fi lter is used, then the inductor in the fi lter should be placed
between the negative terminals on the input fi lter capacitors.
C
BP
Input Filter
Capacitor
HV DC
-
+
INPUT
) for optimum
PI-4157-101305