TPS56100_16 Datasheet, PDF (23/30 Pages) Texas Instruments – HIGH-EFFICIENCY DSP POWER SUPPLY CONTROLLER FOR 5-V INPUT SYSTEMS

TPS56100
HIGHĆEFFICIENCY DSP POWER SUPPLY CONTROLLER
FOR 5ĆV INPUT SYSTEMS
SLVS201A − JUNE 1999 − REVISED JULY 1999
APPLICATION INFORMATION
application example
Below is a typical application schematic. The circuit can be divided into the power-stage section and the
control-circuit section. The power stage must be tailored to the input/output requirements of the application. The
control circuit is basically the same for all applications with some minor tweaking of specific values.
L101
Q101
L102
5V
Vo
GND
+
C101 C102 C103
Q102
R101
R102
+
C105
C104
C106
RTN
Power Stage
Control Section
5V
C2
1 uF
R1
10
C3
1 uF
C6
0.033 uF
NOTE A: VP0 − VP4 are user slected
to set output voltage.
C1 is deleted.
VCC
DRV
15
14
BOOT
LOWDR
16
13
HIGHDR DRVGND
17
12
BOOTLO
LOHIB
18
11
HISENSE LODRV
19
10
LOSENSE
BIAS
20
9
IOUTLO SLOWST
21
8
INHIBIT ANAGND
22
7
VP4
VSENSE
23
6
VP3
VREFB
24
5
VP2
VHYST
25
4
VP1
OCP
26
3
VP0
NC
27
2
PWRGD
IOUT
28
1
U1
TPS56100
R2
150
C4
1 uF
C5
0.1 uF
C7
1000 pF
R4
R3 10.0 k
100
R5
20.0 k
R6
3.92 k
R7
1.00 k
Figure 19. Typical Application Schematic
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
23