3

2

1

4

OUT

DM_IN

DP_IN

N/C

10

11

12

9

IN

DM_OUT

DP_OUT

ILIM_SEL

5

6

7

8

16

15

14

13

DSC

CTL1

CTL2

CTL3

ILIM0

ILIM1

GND FAULT

R6

10 kW

R8

20 kW

C7

150 mF

TPS2541/41A

+

VBUS

DM-CONN

FAULT

C6

0.1 mF

DP-CONN

EN

STATE

DP-HOST

DM-HOST

5 V_HOST

UDG-10133

Power Pad

3

2

1

4

OUT

DM_IN

DP_IN

N/C

10

11

12

9

IN

DM_OUT

DP_OUT

ILIM_SEL

5

6

7

8

16

15

14

13

EN

CTL1

CTL2

CTL3

ILIM0

ILIM1

GND FAULT

R3

10 kW

R8

20 kW

C5

150 mF

TPS2540/40A

+

VBUS

DM-CONN

FAULT

C4

0.1 mF

DP-CONN

EN

STATE

DP-HOST

DM-HOST

5 V_HOST

UDG-10134

ADAPTER

Power Pad

TPS2540, TPS2540A

TPS2541, TPS2541A

SLVSAG2C

– OCTOBER 2010 – REVISED OCTOBER 2011

www.ti.com

CTL Pin Configuration for Notebook States

The CTL pins provide the user with mode flexibility. Specifically, within a notebook, states S0, S3, S4, and S5 are

important for controlling power consumption. For S0 the host controller is active, so either SDP or CDP should be

selected. The notebook is responsible for sourcing at least 500mA when SDP is selected and at least 1500 mA

when CDP is selected. Figure 43 illustrates the circuit connection for TPS2541/41A using one control signal

(STATE). When STATE = logic 0, auto detect is selected (S3/S4/S5, 1.5 A). When STATE = logic 1, CDP mode

is selected (S0, 1.5 A).

Figure 43. TPS2541/41A Application Using Single STATE Control Signal

Figure 44 illustrates the circuit connection for TPS2540/40A with STATE and ADAPTER control signals. If the

adapter is present (ADAPTER = logic 1), the TPS2540/40A supports auto detect operation when STATE = logic

0 (S3/S4/S5, 1.5 A) and CDP operation when STATE = logic 1 (S0, 1.5 A). If the adapter is not present

(ADAPTER = logic 0), the TPS2540/40A disables sleep charge when STATE = logic 0 (S3/S4/S5, power switch

off) and SDP operation when STATE = logic 1 (S0, 0.5 A).

Figure 44. TPS2540/40A Application Using STATE and ADAPTER Control Signals

30

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Product Folder Link(s): TPS2540, TPS2540A TPS2541, TPS2541A