Datasheet

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