Figure 3-2 shows a
block diagram of the external component arrangement and final connections in the
test setup.
Figure 3-2 External Component Connections With TIDA-010239 Hardware
Figure 3-3 shows the test setup. The test setup for the linear regulator and converters
consists of the TIDA-010239 board, DC supply, digital multimeter, electronic load,
voltage and current probe.
Figure 3-3 Test Setup for Linear Regulator and Converters in TIDA-010239
Note:
DUT is Device Under
Test.
The oscilloscope analog
signal bandwidth requires greater than 400 times the switching
frequency.
The oscilloscope requires
higher memory depth and sampling rate to capture ripple waveform accurately
(at least 4 GSPS, memory depth > 1Mpts).
Oscilloscope probe terminated
to 50 Ω.
The tests conducted for this design are as
follows:
Device efficiency and system efficiency at
various loads
Ripple voltage, ripple frequency at full and
light load conditions, output voltage accuracy