iW671

Digital Green-Mode Synchronous Rectifier Controller

Rev. 1.2

Product Summary

© 2017 Dialog Semiconductor

www.dialog-semiconductor.com

2 of 7

28-March-2017

+

+

U1

iW1766C1

SD

GND

1

2

3

8

7

6

4

5

NTC

L

N

OUTPUT

CS/CDC

DET

ASU

RTN

VPS

DRV

1

2

3

8

7

6

4

5

PLRIN

DRAIN

+

+

GND

OUT

U2

iW671

Figure 3.2 : iW671 Typical Application Circuit (Using iW1766C1 as Primary-Side Controller)

(Achieving < 15mW No-Load Power Consumption in 5V, 2.5A Adapter Designs with Fast Dynamic Load Response,

and Supporting Constant Current Operation down to 2V System Output)

+

+

U1

iW1760B

SD

GND

1

2

3

8

7

6

4

5

NTC

L

N

OUTPUT

CFG

ASU

RTN

VPS

DRV

1

2

3

8

7

6

4

5

PLRIN

DRAIN

+

+

GND

OUT

U2

iW671

Figure 3.3 : iW671 Typical Application Circuit for 12V-Output Application

(Using iW1760B as Primary-Side Sensing Flyback Controller with the PLRIN Pin Floating)