Texas Instruments LM5156EVM-BST, Руководство пользователя

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Test Setup and Procedure
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6 SNVU696A – February 2020 – Revised June 2020
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LM5156EVM-BST User's Guide
4 Test Setup and Procedure
4.1 Test Setup
Figure 3 shows the correct jumper positions to configure the evaluation module for the typical application,
as shown in Figure 1 . The correct equipment connections and measurement points are shown in Table 3
Table 3. Standard Configuration Jumper Connections
Jumper Position
J6 Jumper from pin 2 to pin 3
Figure 3. Test Setup
4.2 Test Equipment
Power Supply: The input voltage source (VIN) should be a variable supply capable of 0V to 20V and
source at least 15A.
Multi-meters:
• Voltmeter 1: Input voltage, connect from VIN to VIN-
• Voltmeter 2: Output voltage, connect from VOUT to GND
• Ammeter 1: Input current, must be able to handle 15A. Shunt resistor can be used as needed.
• Ammeter 2: Output current, must be able to handle 3A. Shunt resistor can be used as needed.
Electronic Load: The load should be constant resistance (CR) or constant current (CC) capable. It should
safely handle 3A at 12V.
Oscilloscope: 20-MHz bandwidth and AC coupling. Measure the output voltage ripple directly across an
output capacitor with a short ground lead. It is not recommended to use a long-leaded ground connection
due to the possibility of noise being coupled into the signal. To measure other waveforms, adjust the
oscilloscope as needed.
5 Test Results
Figure 4 through Figure 19 present the typical performance of the LM5156EVM-BST according to the
BOM and the configuration described in Section 4 . Based on measurement techniques and environmental
variables measurements might differ slightly than the data presented.