Texas Instruments TPS53317AEVM-726, Руководство пользователя, Страница: 9 / 30

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V5IN
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VIN
A1
Load
V2
V1
V3
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Test Setup
5.2 Recommended Test Setup
Figure 3 is the recommended test set up to evaluate the TPS53317AEVM-726. Working at an ESD
workstation, make sure that any wrist straps, bootstraps or mats are connected referencing the user to
earth ground before power is applied to the EVM.
Figure 3. TPS53317AEVM-726 Recommended Test Set Up
Input Connections:
1. Prior to connecting the DC input source VIN, it is advisable to limit the source current from VIN to 8 A
maximum. Make sure VIN is initially set to 0 V and connected to J1 as shown in Figure 3 .
2. Connect a current meter A1 between VIN and J1 to measure the input current.
3. Connect a voltmeter V1 at TP1 (VIN) and TP2 (PGND) to measure the input voltage.
4. Prior to connecting the 5-V DC source V5IN, it is advisable to limit the source current from V5IN to 1 A
maximum. Make sure V5IN is initially set to 0 V and connected to J3 as shown in Figure 3 .
5. Connect a voltmeter V2 at TP3 (V5IN) and TP4 (PGND) to measure the V5IN voltage.
Output Connections:
1. Connect Load to J2 and set Load to constant resistance mode to sink 0 A
DC
before VIN is applied.
2. Connect a voltmeter V3 at TP5 (VOUT) and TP6 (PGND) to measure the output voltage.
Other Connections: Place a Fan as shown in Figure 3 and turn on, making sure air is flowing across the
EVM.
9 SLUUBD2 – November 2015 TPS53317AEVM-726 D-CAP+™ Mode Synchronous Step-Down Integrated
FETs Converter
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