TPS2041B-Q1
TPS2042B-Q1
TPS2051B-Q1
www.ti.com
SLVS782A –NOVEMBER 2007–REVISED JUNE 2010
TUSB2046
Hub Controller
SN75240
Tie to TPS2051B EN Input
BUSPWR
Downstream
Ports
Upstream
Port
A
B
C
D
GANGED
DP1
DM1
D +
D -
DP0
DM0
D +
D -
Ferrite Beads
A
B
C
D
GND
5 V
GND
SN75240
DP2
DM2
TPS2051B
OC EN
33 µF
(see Note A)
5-V Power
Supply
DP3
DM3
5 V
IN OUT
1 µF
D +
D -
A
B
C
D
Ferrite Beads
TPS76333
IN
SN75240
GND
5 V
DP4
DM4
0.1 µF
4.7 µF
V
CC
3.3 V
GND
4.7 µF
TPS2051B
33 µF
(see Note A)
PWRON1
EN
OC
IN
GND
OVRCUR1
0.1 µF
0.1 µF
OUT
D +
D -
TPS2051B
48-MHz
Crystal
PWRON2
EN
OC
IN
XTAL1
XTAL2
Ferrite Beads
OVRCUR2
GND
5 V
OUT
Tuning
Circuit
TPS2051B
33 µF
(see Note A)
PWRON3
EN
OC
IN
0.1 µF
0.1 µF
OVRCUR3
OCSOFF
GND
OUT
D +
D -
TPS2051B
Ferrite Beads
PWRON4
EN
OC
IN
GND
5 V
OVRCUR4
OUT
33 µF
(see Note A)
A. USB rev 1.1 requires 120 mF per hub.
Figure 27. Hybrid Self-Powered/Bus-Powered Hub Implementation (TPS2051B)
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