IC OFFLINE SWIT OTP HV 8SOIC

LNK564DN

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


Specifications of LNK564DN

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
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T r a n s f o r m e r
Output Filter
Capacitor
Figure 7. Recommended Circuit Board Layout for LinkSwitch-LP using D Package (Assumes a HVDC Input Stage).
Output Diode
For best performance, the area of the loop connecting the
secondary winding, the output diode and the output fi lter
capacitor should be minimized. In addition, suffi cient copper
area should be provided at the anode and cathode terminals
of the diode for heat sinking. A larger area is preferred at the
quiet cathode terminal. A large anode area can increase high-
frequency radiated EMI.
Quick Design Checklist
As with any power supply design, all LinkSwitch-LP designs
should be verifi ed on the bench to make sure that component
specifi cations are not exceeded under worst-case conditions. The
following minimum set of tests is strongly recommended:
1. Maximum drain voltage – Verify that V
650 V at the highest input voltage and peak (overload) output
power. A 50 V margin to the 700 V BV
margin for design variation, especially in Clampless designs.
2. Maximum drain current – At maximum ambient
temperature, maximum input voltage and peak output
D
FB
BP
C
BP
+
DC
OUT
-
(overload) power, verify drain current waveforms for any
signs of transformer saturation and excessive leading-edge
current spikes at startup. Repeat under steady state conditions
and verify that the leading-edge current spike event is below
I
LIMIT(MIN)
maximum DRAIN current should be below the specifi ed
absolute maximum ratings.
3. Thermal Check – At specified maximum output
power, minimum input voltage and maximum ambient
temperature, verify that the temperature specifi cations
are not exceeded for LinkSwitch-LP, transformer, output
diode and output capacitors. Enough thermal margin
should be allowed for part-to-part variation of the R
LinkSwitch-LP as specifi ed in the data sheet. Under low line
and maximum power, a maximum LinkSwitch-LP SOURCE pin
temperature of 100 °C is recommended to allow for
these variations.
does not exceed
DS
Design Tools
specifi cation gives
DSS
Up-to-date information on design tools can be found at the
Power Integrations web site: www.powerint.com.
LNK562-564
S
S
Input Filter
S
Capacitor
S
HV DC
+
-
INPUT
Maximize hatched copper
areas (
) for optimum
heatsinking
PI-4582-021407
at the end of the t
. Under all conditions, the
LEB(MIN)
of
DS(ON)
7
Rev. H 11/08