TPS2070, TPS2071

FOUR-PORT USB HUB POWER CONTROLLERS

SLVS287A – SEPTEMBER 2000 – REVISED FEBRUARY 2001

26

POST OFFICE BOX 655303

APPLICATION INFORMATION

68

µF

D+

D–

GND

5 V

0.1

µF

DP0

DM0

EECLK

EEDATA

EXTMEM

SUSPEND

C

D

A

B

SN75240

BUSPWR

RESET

VCC1_3.3

VCC2_3.3

0.1

µF

10

µF

XTAL1

XTAL2

33 pF

6 MHz

33 pF

1.5 k

Ω

TSTPLL

TSTMODE

GND

GND

PWRON1

OVRCUR1

PWRON2

OVRCUR2

PWRON3

OVRCUR3

PWRON4

OVRCUR4

EN1

OC1

EN2

OC2

EN3

OC3

EN4

OC4

3.3 V

4.7

µF

0.1

µF

SP

SP

GATE

6 V to 9 V

Supply

IRLZ24N

0.1

µF

68

µF

VEXT

PG

BPMODE

DP0_RST

1.5 k

Ω

BP

EN_REG

DGND

AGND

0.1

µF

0.01

µF

33

µF

PG_DLY

CP_M

CP_P

BP_DIS

VCP

D+

D–

GND

5 V

D+

D–

GND

5 V

C

D

A

B

SN75240

D+

D–

GND

5 V

D+

D–

GND

5 V

C

D

A

B

SN75240

33

µF

33

µF

33

µF

OUT4

OUT3

OUT2

OUT1

TPS2071

TUSB2046B

DM4

DP4

DM3

DP3

DM2

DP2

DM1

DP1

Downstream

Ports

0.1

µF

Upstream

Ports

0.1

µF

†

†

† This hybrid hub can also be implemented by connecting a 5-V power supply to the SP input of the TPS2071 and eliminating the external FET.

However, this type of implementation is best suited for the TPS2074/75 (refer to the TPS2074, TPS2075 data sheet for details).

Figure 38. USB Hybrid Hub Using TPS2071 Power Controller and TUSB2046 Hub Controller