Texas Instruments TPS22810EVM, User Manual

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Load
12
Ÿ
DMM (mV)
+
-
+
Source
12 V
-
+
General Configurations
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4 SLVUAY7B – November 2016 – Revised January 2018
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TPS22810 Load Switch Evaluation Module
NOTE: A resistive load is recommended for testing. If an electronic load is used, ensure that the
output load is set in the constant resistance (CR) mode, not in the constant current (CC)
mode.
3.3 Test Configurations
Make sure the evaluation board has default jumper settings as shown in Table 5 .
Table 5. Default Jumper Setting for the TPS22810EVM
CH1 CH2
J1 J2 J3 J4 J5 J6 J7 J8
2-3 1-2 Install Install 2-3 1-2 Install Install
Connect the VIN power supply to the T1/T3 terminal (VIN1/VIN2). The input voltage range of the
TPS22810EVM is 2.7 to 18 V. External output loads can be applied to the load switch by using the T2/T4
terminal (VOUT1/VOUT2). The TPS22810 is active high device, and EN/UVLO pin must not be left
floating. A shorting jumper must be installed on J1 (CH1)/J5 (CH2) in the 2-3 position.
3.3.1 On-Resistance (R
ON
) Test Setup
Figure 2 shows the typical setup for measuring on-resistance for CH1. The voltage drop across the switch
is measured using the sense connections (VIN1_SENSE, VOUT1_SENSE), and this can be divided by the
load current to calculate the R
ON
resistance.
Figure 2. R
ON
Measurement Test Setup