iW673

Digital Green-Mode Synchronous Rectifier Controller

Rev. 1.4

Product Summary

© 2016 Dialog Semiconductor

www.dialog-semiconductor.com

2 of 6

17-May-2016

Figure 3.2 : iW673 Typical Application Circuit Using iW1602 as the Primary-Side Controller

(Achieving <75mW No-Load Power Consumption in 5V, 2.5A Adapter Designs with Fast Dynamic Load Response, and

Supporting Constant Current Operation down to 2.4V System Output)

L

+

U1

iW1602

CFG

OUTPUT

GND

CS/FS

1

5

3

6

4

2

N

RTN

+

+

U2

iW673

DRAIN

SOURCE

OUT

GND

1

5

3

6

4

2

Figure 3.3 : iW673 Typical Application Circuit for Multi-Level Output Voltage and Current

(Achieving <20mW No-Load Power Consumption)

Note: The DFET clamping circuit at the DRAIN pin of iW673 is not needed if the

maximum voltage on the drain of the SR MOSFET is lower 60V.

+

+

U1

iW1782

SD

GND

1

2

3

8

7

6

4

5

NTC

L

N

OUTPUT

CS/CDC

DLNK

ASU

RTN

1

2

3

6

5

4

+

+

GND

U3

iW673

U2

iW636

3

1

DRV

GND

2

4

6

5

DIS

D-

D+

D+

D-

DRAIN

SOURCE

OUT