Datasheet

SLOT_MP
2V/div
InputCurrent
(3V3IN)
50mA/div
SLOT_PWR
5V/div
www.ti.com Test Procedure
On the oscilloscope, set the Channel 1 amplifier scale to 2 V/div, and the Channel 2 amplifier to 5 V/div.
Position the Channel 1 trace a couple divisions down from the top of the scope screen, and position the
Channel 2 trace about a division below it. Set the current probe amplifier scale to 50 mA/div, and position
that trace towards the bottom of the scope screen. Set the scope to trigger on the rising edge of Channel
1, at a threshold of about 1.5 V. Set the time base to 500 µ s or 1 ms/div, and set the trigger mode to
NORMAL.
In the GUI 3.3V CONTROL panel, click on the PASS/BLK FET button. In the STATUS panel, verify the
3.3V PASS/BLK FET and VOUT GOOD indicator colors change to GREEN. On the EVM board, the MP
PGD green STATUS LED should be illuminated.
On the oscilloscope, verify a waveform was obtained similar to the one shown in Figure 5 . The total ramp
time of the Channel 1 waveform, from 0 V to about 3.2 V should be 2.6 0.6 ms. The peak amplitude of the
current pulse on Channel 4 should be 195 25 mA. A DVM can be used to verify the voltage at TP5 (with
respect to ground at TP6) is within 10 mV of the 3.3-V input supply voltage at 3V3IN (TP2).
Figure 5. Output Ramp-Up waveforms - SLOT_MP Rail.
SLUU349 – March 2009 TPS2459 Full-Featured AdvancedMC™ Slot Controller Evaluation Module 11
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