LNK63K-V datasheet(11/24 Pages) POWERINT

Part #	LNK63K-V

Description	Energy Efficient, High-Power Off-Line Switcher With Accurate Primary-Side Regulation (PSR)

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Manufacturer	POWERINT [Power Integrations, Inc.]

Direct Link	http://www.powerint.com

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11 / 24 page

Rev. C 03/14

11

www.powerint.com

LinkSwitch-HP

Figure 14. Layout for LCD Monitor Supply Using eDIP-12B Package.

Figure 13. 17 W LCD Monitor Supply (+18 V, +5 V).

Layout Considerations for eDIP-12B package

The schematic extract in Figure 13 is an example of LinkSwitch-HP

used in a dual output LCD monitor supply using eDIP-12B

package. In this design the exposed metal tab on the topside

of package is left open (no heat sink). The SOURCE pins of

LinkSwitch-HP provide heat sinking through connection to the

source copper pad of PCB. This technique is adequate for

device dissipation up to 0.85 W (1/2 square inch of copper area

required). The layout guidelines described for eSIP-7C are the

same for eDIP-12B with an added consideration about sensitive

component layout. The return referenced components C4, C8,

C16, R9, R7 must be placed directly under the LinkSwitch-HP

package as shown in Figure 14. This requires that these

particular components be SMD type as this allows an ideal

noise-immune layout.

Output Power Table Assumptions

•

12 V output.

•

Schottky rectification.

•

82% efficiency.

•

V

OR = 135 V.

•

K

P = 0.4 for 85-265 VAC input and KP = 0.6 for 195-265 VAC

input.

•

V

MIN = 100 V for 85-265 VAC input and VMIN = 250 V for

195-265 VAC input.

•

0.85 W device dissipation for open frame designs with PCB

heat sink.

Quick Design Checklist

All LinkSwitch-HP designs should be verified on the bench

particularly for specified worst-case stress conditions. The

following set of tests are strongly recommended:

1. Maximum drain voltage – Verify that VDS does not exceed

675 V for LNK677X series and 600 V for LNK6X6X series.

This gives a 50 V margin for design variations.

2. Under all conditions, the maximum Drain current should be

below the specified absolute maximum ratings.

3. Thermal check – At rated maximum output power, minimum

input voltage and maximum ambient temperature, verify that

the maximum allowed temperature is not exceeded for any

component in the design. Of particular importance is

checking the temperature rise of the major power conversion

components such as transformer, output diodes, input

bridge, primary clamp circuit and LinkSwitch-HP. Under the

stated conditions above, LinkSwitch-HP tab temperature

should not exceed 110 °C.

PI-6860-120312

C9

1 nF

250 VAC

VR1

P6KE130A

130 V

L1

10 mH

BR1

DF06M

600 V

C2

47

µF

450 V

D2

BAV21WS-

7-F

D1

DL4937

C6

22

µF

25 V

C8

100 pF

50 V

C16

10 pF

50 V

C7

100 nF

25 V

C3

10 nF

630 V

C12

220

µF

35 V

C10

470 pF

200 V

D4

B340LB-13-F

D3

30BQ100PBF

C15

470 pF

200 V

C11

220

µF

35 V

C14

820

µF

6.3 V

T1

EF25

C13

820

µF

6.3 V

C5

4.7

µF

10 V

L2

Ferrite Bead

(3.5

× 4.45 mm)

3

9,10

7,8

12

6

5

1

C1

100 nF

310 VAC

RT1

5

Ω

F1

2 A

tO

90 - 265

VAC

18 V, 0.67 A

J2-6

5 V, 1A

J2-1

J1-3

J1-1

RTN

J2-4

LinkSwitch-HP

D

S

FB

BP

CP

PD

CONTROL

U1

LNK6774V

R8

46.4 k

Ω

1%

1/16 W

R6

23.2 k

Ω

1%

1/16 W

R7

100 k

Ω

1%

1/16 W

R13*

R5

6.98 k

Ω

1%

1/8 W

R10

10

Ω

1%

1/8 W

R4

20

Ω

1%

R3

100

Ω

1%

R2

100

Ω

1%

R1

3 k

Ω

R12

10

Ω

1%

1/8 W

R11

36 k

Ω

1/8 W

R9

10.5 k

Ω

1%

1/16 W

C4*

*Optional

PI-6860-120312

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