Datasheet

   
       
 
SLVS258A − NOVEMBER 1999 − REVISED DECEMBER 1999
19
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
application proposals
paralleling of two TPS6013x to deliver 600 mA total output current
Two TPS60130x devices can be connected in parallel to yield higher load currents. The circuit of Figure 25 can
deliver up to 600 mA at an output voltage of 5 V. The devices can share the output capacitors, but each one
requires its own transfer capacitors and input capacitor. If both a TPS60130 and a TPS60131 are used, it is
possible to monitor the battery voltage with the TPS60130 using the low-battery comparator function and to
supervise the output voltage with the TPS60131 using the power-good comparator. Make the layout of the
charge pumps as similar as possible, and position the output capacitor the same distance from both devices.
IN
IN
LBI
C1+
C1−
ENABLE
PGND GND
OUT
OUT
FB
LBO
C2+
C2−
C
o
47 µF
Ci
15 µF
Output
5 V, 600 mA
C2
2.2 µF
C1
2.2 µF
R1
562 kΩ
R2
453 kΩ
Input
2.7 V to 5.4 V
Off/On
IN
IN
NC
C1+
C1−
ENABLE
PGND GND
OUT
OUT
FB
PG
C2+
C2−
C2
2.2 µF
C1
2.2 µF
C
i
15 µF
R3
1 MΩ
Low Battery
Warning
Power-Good
Signal
R4
1 MΩ
TPS60130 TPS60131
Figure 25. Paralleling of Two TPS6013x Charge Pumps