Texas Instruments Evaluation Module for the TPS2113ADRB Power Multiplexer TPS2113AEVM-581 TPS2113AEVM-581 데이터 시트
제품 코드
TPS2113AEVM-581
EVM Setup
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2.4.2
Mode 2 Automatic Switching (TPS2113A Only)
In Mode 2 automatic switching, OUT connects to IN1 if the voltage at IN1 is sufficiently high; otherwise,
OUT connects to the higher of IN1 and IN2. The threshold at which IN1 is selected corresponds to
approximately 0.8 V at test point TP3. The corresponding value of the IN1 voltage depends upon the
setting of potentiometer R2. Adjusting R2 clockwise increases the IN1 selection threshold voltage.
OUT connects to the higher of IN1 and IN2. The threshold at which IN1 is selected corresponds to
approximately 0.8 V at test point TP3. The corresponding value of the IN1 voltage depends upon the
setting of potentiometer R2. Adjusting R2 clockwise increases the IN1 selection threshold voltage.
Table 2. EVM Shorting Jumper Placement for Mode 2 Automatic Switching
HEADER
EVM
DEVICE
J1
J2
J3
J4
HPA581-002
OUT
IN
OUT
IN
A manufacturer can provide a secondary battery pack option to extend the product run time with Mode 2
automatic switching. The TPS2110A-TPS2113A drains the primary battery at IN1 and automatically
switches to the secondary battery at IN2.
automatic switching. The TPS2110A-TPS2113A drains the primary battery at IN1 and automatically
switches to the secondary battery at IN2.
2.5
Output Voltage Holdup
Headers J5-J8 select the output holdup capacitance.
The output voltage drops out for 60 ms (max) whenever the TPS211xA switches between the IN1 and IN2
supplies. Some capacitance at the TPS211xA output is necessary to prevent the output voltage from
dropping too much during the supply switchover. Excessive voltage drop can cause a system to reset or
lose data.
supplies. Some capacitance at the TPS211xA output is necessary to prevent the output voltage from
dropping too much during the supply switchover. Excessive voltage drop can cause a system to reset or
lose data.
2.6
Switch Status
The switch status output can be monitored at the positive terminal of header J1. A switch status output
equal to logic 1 corresponds to an IN2 switch that is on.
equal to logic 1 corresponds to an IN2 switch that is on.
4
TPS211xADRB EVM, Power Multiplexer Evaluation Module
SLUU409 – February 2010
Copyright © 2010, Texas Instruments Incorporated