Manual Switching Mode (TPS2110/1/4/5A Only)
2-3
EVM Setup
2.3
Manual Switching Mode (TPS2110/1/4/5A Only)
Potentiometer R2 and header J4 do not affect the operation of the manual
switching mode.
Some products like digital cameras and hand-held devices that receive power
from an internal battery or from a docking station can take advantage of the
manual-switching feature. The TPS2110/1/4/5A digital control input, D1, can
directly sense the presence of the docking station and connect the load to the
appropriate power source.
2.3.1
Configuring the TPS2110/1A for Manual Switching
To place the device into manual switching mode, short header J1. The logic
level on the D1 pin now determines which input is selected. On the EVM,
header J2 controls the D1 pin. If J2 is left open, then D1 is internally pulled high
and IN1 is selected. If J2 is shorted, then D1 is pulled low and IN2 is selected.
2.3.2
Configuring the TPS2114/5A for Manual Switching
To place the device into manual switching mode, short header J2. The logic
level on the D1 pin determines which input is selected. On the EVM, header
J3 controls the D1 pin. If J3 is left open, then D1 is internally pulled high and
IN1 is selected. If J3 is shorted, then D1 is pulled low and IN2 is selected.
2.4
Automatic Switching Modes
All EVMs support Mode 1 automatic switching. Mode 2 automatic switching is
supported by the TPS2110A–TPS2113A EVMs only.
2.4.1
Mode 1 Automatic Switching
OUT connects to the higher of IN1 and IN1 in Mode 1 automatic switching.
Refer to Table 2−1 to configure the EVM for Mode 1 automatic switching.
Table 2−1. EVM Shorting Jumper Placement for Mode 1 Automatic Switching
EVM
Device
Header
EVM
Device
J1
J2
J3
J4
HPA061−001
TPS2110A
X
HPA061−002
TPS2111A
X
HPA061−003
TPS2112A
X
HPA061−004
TPS2113A
X
HPA061−005
TPS2114A
X
HPA061−006
TPS2115A
X
A manufacturer can provide a secondary battery pack option to extend the
product run time with Mode 1 automatic switching. The TPS211xA cycles
between the primary and secondary batteries until both batteries are drained.
Summary of Contents for TPS211 AEVM Series
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