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Test Setup
9
SNVU552 – March 2017
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Copyright © 2017, Texas Instruments Incorporated
Using the LMG1205HBEVM GaN Half-Bridge Power Stage EVM
5
Test Setup
This section describes the EVM hardware and outlines the procedure to set it up for evaluation.
Figure 2
and
Figure 3
show the top and bottom views of the LMG1205HBEVM, respectively.
Figure 2. LMG1205HBEVM Board Top View
Figure 3. LMG1205HBEVM Board Bottom View
WARNING
High voltages that may cause injury exist on this evaluation
module (EVM). Please ensure all safety procedures are followed
when working on this EVM. Never leave a powered EVM
unattended.
5.1
Test Equipment
•
DC Voltage Source
: capable of supplying the input of the EVM up to 80 V as desired. Capable of
supplying 10 A and supports current limiting
•
DC Bias Source
: capable of 5.5-V to 10-V output at up to 500 mA
•
Oscilloscope
: capable of at least 200-MHz operation (
≥
500 MHz preferred), using oscilloscope
probes with a spring-type ground connection
•
DC Multimeter(s)
: Capable of 80-V measurement, suitable for determining operation and efficiency (if
desired)
•
DC Load
: Capable of 100-V operation at up to 10 A in constant current-mode operation
•
Function Generator
: single output for PWM operation, dual synchronous output for Independent mode
(requires EVM modification), capable of at least 0-V to 3-V signal (operating maximum digital input is 5
V)
