Application Notes

For technical support and more information, see inside back cover or visit www.ti.com

Figure 4-1; Configuration for Power-Up Sequencing

Remote Sense (–)

Remote Sense (+)

+V

IN

–V

IN

† C

OUT

1,000µF

Remote Sense (–)

Remote Sense (+)

† C

OUT

1,000µF

1 =Inhibit

Q

1

BSS138

(Note 8)

C

2

0.1µF

(Note 4)

Module #1

(Highest V

1

2

11–13

8–10

14

7

3

4

–V

IN

+V

IN

EN 1

EN 2

SEQ

V

6

5

+V

OUT

–V

OUT

+Sense

–Sense

C

1

0.1µF

(Note 4)

Module #2

(Lowest V

1

2

11–13

8–10

14

7

3

4

–V

IN

+V

IN

EN 1

EN 2

SEQ

V

6

5

+V

OUT

–V

OUT

+Sense

–Sense

C

3

( Note 5 &

Table 4-2 )

LOAD

Vo

1

LOAD

Vo

2

† For sequencing configurations, a 1,000µF

electrolytic capacitor is recommended at

the output of each converter. See Note 2.

PT3400 Series