TOP257MN 查看數據表（PDF） - Power Integrations, Inc

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TOP257MN

AC/DC Converters Off-Line Switcher IC 26W/64W PK

Power Integrations, Inc 

TOP252-262

Optional PCB slot for external

heatsink in contact with

SOURCE pins

Input Filter

Capacitor

J1

+

HV

-

C1

JP1

R1

C2

R4

R3

D1

S

D

S

U1

S

C

S

M

C3 C4

R8

R2

D2

Maximize hatched copper

areas (

) for optimum

heat sinking

VR2

Isolation Barrier

Y1-

Capacitor

C6

Transformer

C5

JP2

U2

Figure 46. Layout Considerations for TOPSwitch-HX Using P Package.

T1

C10

R9

Output

Rectifier

D3

C7

Output Filter

Capacitor

L1

R11

U3

R10

C9

R12

C8

J2

-

DC

Out

+

PI-4753-070307

Optional PCB slot for external

heatsink in contact with

SOURCE pins

Input Filter

Capacitor

C2

R6

R5

J1

+

HV

-

D1

S

D

S

S U1 C

C1

S

X

S

V

JP1

R1

R3

R7

C4

R8

C3

D2

R2

R9

R4

Maximize hatched copper VR2

areas (

) for optimum

heat sinking

Figure 47. Layout Considerations for TOPSwitch-HX Using M Package.

Isolation Barrier

Y1-

Capacitor

C6

T1

D3

Transformer

R12

Output

Rectifier

Output Filter

C7

Capacitor

L1

C5

C9

R13

R14

U3

C8

JP2

R15

J2

U2

R16

R17

- DC +

Out

PI-4752-070307

28

Rev. H 06/13

www.powerint.com

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