CURRENT SHARING

CURRENT SHARING DIAGRAM

C

O1

1000 mF

+Sense

V

O

UDG-08152

+Sense

V

O

-Sense

10

17

11

16

V

O

V

O

Adj

4

18

AGND

R

SET

1%

0.05 W

3

5

CLKIO

Comp

1

2

Share

Config

GND

13

12

9

8

GND GND GND

PTH08T255W

(Master)

22

21

6

7

14

15

20

SmartSync

INH/UVLO

V

I

V

I

V

I

V

I

Track

19

TT

C

I1

1000 mF

+

+Sense

V

O

-Sense

10

17

11

16

V

O

V

O

Adj

4

18

AGND

3

5

CLKIO

Comp

1

2

Share

Config

GND

13

12

9

8

GND GND GND

PTH08T255W

(Slave)

22

21

6

7

14

15

20

SmartSync

INH/UVLO

V

I

V

I

V

I

V

I

Track

19

TT

R

TT

L

O

A

D

C

O2

1000 mF

C

I2

1000 mF

GND

V

I

-Sense

GND

+

+

+

PTH08T255W

The PTH08T255W module is capable of being configured in parallel with another PTH08T255W module to share

load current. To parallel the two modules, it is necessary to configure one module as the Master and one module

as the Slave. To configure a module as the Master, connect the CONFIG pin (pin 1) to GND. The CONFIG pin of

connected between the two modules. See Figure 22 for the recommended layout of pins 2 thru 5. The module

that is configured as the MASTER is used to control all of the functions of the two modules including Inhibit

ON/OFF control, AutoTrack sequencing, TurboTrans, SmartSync, +/- Remote Sense, and Output Voltage Adjust.

See the current sharing diagram in Figure 19 for connections. The MASTER and the SLAVE must be powered

from the same input voltage supply.

See Figure 19 and Table 7 for a diagram and connection description of each pin when two PTH08T255W

modules are being used in a MASTER/SLAVE configuration.

Figure 19. Typical Current Sharing Diagram

24

Copyright © 2008, Texas Instruments Incorporated

Product Folder Link(s): PTH08T255W