STR-Y6753 datasheet(11/34 Pages) SANKEN

Part #	STR-Y6753

Description	Quasi-Resonant Controllers with Integrated Power MOSFET

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Manufacturer	SANKEN [Sanken electric]

Direct Link	http://www.sanken-ele.co.jp/en

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11 / 34 page

STR-Y6700 Series

STR-Y6700 - DS Rev.4.0

SANKEN ELECTRIC CO.,LTD.

11

Oct. 07, 2014

6.

Typical Application Circuit

 The PCB traces D/ST pins should be as wide as possible, in order to enhance thermal dissipation.

 In applications having a power supply specified such that D/ST pin has large transient surge voltages, a clamp

snubber circuit of a capacitor-resistor-diode (CRD) combination should be added on the primary winding P, or a

damper snubber circuit of a capacitor (C) or a resistor-capacitor (RC) combination should be added between the

D/ST pin and the S/OCP pin.

 For stable operation, NF pin should be connected to GND pin, using the shortest possible path.

1

7

5

4

2 3

STR-Y6700

6

VAC

C1

D2

R2

C3

T1

D51

C51

R51

R52

U51

R54

R56

C52

D

P

S

PC1

C4

ROCP

CY

BR1

R53

R55

L51

C53

CV

C5

RBD2

RBD1

DZBD

CBD

R3

U1

VOUT(+)

VOUT(-)

C2

R1

D1

CRD clamp snubber

C(RC)

Damper snubber

Figure 6-1 Typical application circuit

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STR-Y6753 Datasheet(PDF) 11 Page - Sanken electric

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