LNK562PSLASHGSLASHD datasheet(8/20 Pages) POWERINT

8 / 20 page

LNK562-564

Rev. L 12/21

www.power.com

1. Maximum drain voltage – Verify that V

DS does not

exceed 650 V at the highest input voltage and peak

(overload) output power. A 50 V margin to the 700 V

DSS specification gives margin for design variation,

especially in Clampless designs.

2. Maximum drain current – At maximum ambient

temperature, maximum input voltage and peak output

(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) at the end

of the t

LEB(MIN). Under all conditions, the maximum

DRAIN current should be below the specified

absolute maximum ratings.

3. Thermal Check – At specified maximum output

power, minimum input voltage and maximum ambient

temperature, verify that the temperature specifications

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

DS(ON) of LinkSwitch-LP as specified 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.

Design Tools

Up-to-date information on design tools can be found at

the Power Integrations web site: www.power.com.

LNK562P/G/D Datasheet(PDF) 8 Page - Power Integrations, Inc.