Test Setup and Results
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SLLU298 – May 2018
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2.2.4
7 Sense Amplifier Test
Test setup for input bus voltage sense amplifier test is shown in
Figure 8
.
Figure 8. Input Bus Voltage Sense Amplifier Test Setup
1. Enable power supply PS1
2. Gradually increase the voltage at PS1 into 4.95 V to 5.05 V range and monitor current using MM1 that
should not exceed 145 mA
3. Enable power supply PS2
4. Gradually increase the voltage of power supply PS2 from 0 V up to 300 V and monitor voltages in
accordance to Table 6
5. Gradually decrease the voltage of power supply PS2 down to 0 and disable it
6. Gradually reduce the voltage of power supply PS1 down to 0 V and disable it
Table 6. Input Bus Voltage Sense Amplifier Outputs
PS2
0 V
49 V - 51 V
99 V - 101 V
149 V - 151 V
299 V - 301 V
MM5 (differential output)
0.28 V - 0.32 V
0.34 V - 0.38 V
0.39 V - 0.43 V
0.42 V - 0.48 V
0.58 V - 0.64 V
MM6 (common output)
1.15 V - 1.45 V
1.1 V - 1.4 V
1.05 V - 1.35 V
1.0 V - 1.3 V
0.95 V - 1.25 V